1,000+ FREE Online Textbook Library & Learning Resources for All Subjects

The textbook price problem is getting out of hand.

CollegeBoard estimates that, on average, undergraduate students at public universities will have spent about $1,298 on textbooks and supplies in the 2015-2016 school year. For in-state students, this number is actually higher than their annual tuition!

There is good news, though:

The open content movement is on the rise, and there are hundreds of open source textbooks and educational resources available online.

What are open source textbooks and educational resources?

The definition is rather simple: they are textbooks and online classes licensed under open copyright licenses (e.g., Creative Commons). Since they are freely available, you can either read them online or download them as PDFs at no cost. (You may, however, have to pay a small amount if you wish to get a hard copy.)

So this list is essentially a free online textbook library. Here, we’ve gathered hundreds of links to open textbooks and online courses from different websites and sorted them by subject. To improve your research even more, we’d recommend you to look through an essay database with thousands of academic paper samples written by real students.

Who are the open source textbooks for?

• College and high school students who can use them as a free or cheap alternative to their textbooks
• Educators who can adapt the textbooks to their courses and distribute copies to their students (read more about what’s permissible under different Creative Commons Licenses)
• Anyone who wants to learn and study

How do you use this list?

• The textbooks and educational resources are listed by subject. You can navigate to a specific section using the links below.
• If you’re looking for a specific textbook, author, or topic, just press Ctrl+F to search for any keyword.
• If you can’t find a specific book, there is another list of links to free textbooks listed by subject.

Open Textbooks Library

Cultural Anthropology/Human Rights	WikiBooks	CC-BY-SA
Folklife and Fieldwork: A Layman’s Introduction to Field Techniques	Peter Bartis	PD
Introduction to Paleoanthropology	WikiBooks	CC-BY-SA
Native Peoples of North America	Susan Stebbins	CC-BY-NC-SA

Art and Contemporary Critical Practice: Reinventing Institutional Critique	Gerald Raunig, Gene Rey	CC-BY-NC-ND
Art Appreciation and Techniques	Saylor Academy	CC-BY
Art History	WikiBooks	CC-BY-SA
Art History	Boundless	CC-BY-SA
Digital Foundations: Introduction to Media Design with the Adobe Creative Suite	xtine burrough, Michael Mandiberg	CC-BY-NC-SA
Introduction to Art: Design, Context, and Meaning	University of North Georgia Press	CC BY-SA
Internet for Performing Arts	Tal Sanders, Pacific University	CC BY-NC
Media Studies 101	BCcampus OpenEd	CC-BY
Open Content Photography Program	WikiBooks	CC-BY-SA
Graphic Design and Print Production Fundamentals	Graphic Communications Open Textbook Collective	CC-BY

BioFundamentals: Introductory Molecular Biology	Michael W. Klymkowsky, Melanie M. Cooper	CC-BY-SA-NC
Biology	Jean Brainard	CC-BY-SA
Biology Advanced Concepts	CK-12	CC-BY-NC
Biology Concepts	Douglas Wilkin, Jean Brainard	CC-BY-NC
Biomechanics	WikiBooks	CC-BY-SA
Cell Biology and Genetics	Charles Twesigye	CC-BY-SA
Computing Life	National Institute of General Medical Sciences	PD
Diversity of Algae and Plants	Memory Tekere	CC-BY-SA
Ecology and Environment	John Kiogora Mworia	CC-BY-SA
Encyclopedia of Life	EOL	CC-BY-SA
Evolution Biology	Jassiel Nyengani Zulu	CC-BY-SA
Genes and Disease	National Center for Biotechnology Information	PD
Help Me Understand Genetics Handbook	Lister Hill National Center for Biomedical Communications	PD
Human Biology – Breathing	CK-12	CC-BY-NC
Human Biology – Circulation	CK-12	CC-BY-NC
Human Biology – Digestion and Nutrition	CK-12	CC-BY-NC
Human Biology – Ecology	CK-12	CC-BY-NC
Human Biology – Genetics	CK-12	CC-BY-NC
Human Biology – Lives of Cells	CK-12	CC-BY-NC
Human Biology – Nervous System	CK-12	CC-BY-NC
Human Biology – Reproduction	CK-12	CC-BY-NC
Human Biology – Sexuality	CK-12	CC-BY-NC
Human Biology – Your Changing Body	CK-12	CC-BY-NC
Human Physiology	WikiBooks	CC-BY-SA
Inside the Cell – Biology	National Institute of General Medical Sciences	PD
Laboratory Exercises in Microbiology: Discovering the Unseen World Through Hands-On Investigation	CUNY Academic Works	CC BY-NC-SA
Introduction to Molecular and Cellular Biology	Saylor Academy	CC-BY
Microbiology	Saylor Academy	CC-BY
Microbiology and Mycology	Jassiel Nyengan Zulu	CC-BY-SA
Modern Biology	Open Learning Initiative	CC-NC-BY-SA
Nucleic Acids and Chromatin	OpenLearn	CC-NC-BY-SA
Online Biology Book	Michael J. Farabee	Custom
Physiology	Boundless	CC-BY-SA
Plant and Animal Physiology	Rémi Rakotondradona	CC-BY-SA
Sensory Systems	WikiBooks	CC-BY-SA
The New Genetics	National Institute of General Medical Sciences	PD
The Structures of Life	National Institute of General Medical Sciences	PD
Understanding Biodiversity	Douglas Wilkin	CC-BY-NC
What is Biodiversity	Melina Laverty, Eleanor Sterling	CC-BY

Accounting Principles: A Business Perspective (Financial)	Merlot	CC-BY-NC-ND
Advanced Business Law and the Legal Environment	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Astronomy	body,div,table,thead,tbody,tfoot,tr,th,td,p { font-family:”Sans”; font-size:x-small } a.comment-indicator:hover + comment { background:#ffd; position:absolute; display:block; border:1px solid black; padding:0.5em; } a.comment-indicator { background:red; display:inline-block; border:1px solid black; width:0.5em; height:0.5em; } comment { display:none; } Electronic Literature CollectionA. Fraknoi, D.Morrison, S.Wolff	CC BY
Budget & Finance Administration in Recreation & Sport	Daniel McLean	CC-BY-SA
Business	Boundless	CC-BY-SA
Business Plan Development Guide	Lee Swanson, University of Saskatchewan	CC BY-SA
Business Communication for Success (Canadian Edition)	Scott McLean, Murray Moman	CC-NC-BY-SA
Business English for Success	Scott McLean	CC-NC-BY-SA
Business Ethics	Aims Community College	CC-BY-SA
Business Ethics	William Frey, Jose A. Cruz-Cruz	CC-BY
Business Fundamentals	Global Text Project	CC-BY-SA
Business Information Systems: Design an App for That	Raymond Frost, Jacqueline Pike, Lauren Kenyo, Sarah Pels	CC-NC-BY-SA
Business Law and Ethics	Saylor Academy	CC-BY
Business Law and the Legal Environment (EMBA Edition)	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Business Law and the Legal Environment (2 Volume Set)	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Business Law and the Legal Environment: MAcc Edition	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Building Strategy and Performance.	Kim Warren	CC BY-NC-SA
Business Statistics	Saylor Academy	CC-BY
Communication Skills for Personal and Professional Development: The Seven Challenges Approach	Dennis Rivers	CC-BY
Core Concepts of Marketing	John Burnett	CC-BY
Corporate Communication	Saylor Academy	CC-BY
Democratizing Innovation	Eric Von Hippel	CC-BY-NC-ND
eMarketing: The essential guide to marketing in a digital world	Quirk	CC-BY-SA
E-Commerce and International Business	Ulrich Werner	CC-BY-SA
Economics: Theory Through Applications (2 Volume Set)	Russell Cooper, Andrew John	CC-NC-BY-SA
Effective Article Marketing for Promotion and Profit	Motown Terri	CC-BY-SA
Ethics and Economy	Dag G. Aasland	CC-BY-NC-ND
Exploring Business	Karen Collins	CC-NC-BY-SA
Finance	Boundless	CC-BY-SA
Financial Accounting Fundamentals	The University of Virginia	CC-BY-SA
Foundations of Business Law and the Legal Environment	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Green IS: Building Sustainable Business Practices	Marie-Claude Boudreau, Adela Chen, Mark Huber	CC-BY
How to Use Microsoft Excel: The Careers in Practice Series	Joseph M. Manzo	CC-NC-BY-SA
Human Relations	Laura Portolese	CC-NC-BY-SA
Human Resource Management	Saylor Academy	CC-BY
Human Resource Management	Laura Portolese	CC-NC-BY-SA
Information Systems: A Manager’s Guide to Harnessing Technology	John Gallaugher	CC-NC-BY-SA
Innovation Happens Elsewhere	Ron Goldman & Richard P. Gabriel	CC-NC–BY-SA
Intercultural Communication	Scott McLean	CC-NC-BY-SA
International Finance: Theory and Policy	Steve Suranovic	CC-NC-BY-SA
International Trade: Theory and Policy	Steve Suranovic	CC-NC-BY-SA
Introduction to Business	Saylor Academy	CC-BY
Introduction to Business, Management, and Ethics	William Frey	CC-BY-SA
Introduction to Contracts, Sales and Product Liability	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Introduction to Financial Accounting	Saylor Academy	CC-BY
Introduction to the Law of Property, Estate Planning and Insurance	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Involvement of Banking in the Commonwealth of Independent States	Saydullo Abdullaev, Valentin Antonovich Kotov	CC-BY-SA
Launch! Advertising and Promotion in Real Time	Michael Solomon, Lisa Duke Cornell, Amit Nizan	CC-NC-BY-SA
Law for Entrepreneurs	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Law of Commercial Transactions	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Legal Aspects of Corporate Management and Finance	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Legal Aspects of Marketing and Sales	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
Macroeconomics: Theory Through Applications	Russell Cooper, Andrew John	CC-NC-BY-SA
Management	Boundless	CC-BY-SA
Management Accounting Concepts and Techniques	Introtocost	BY-NC-SA
Management Information Systems	Saylor Academy	CC-BY
Management Leadership	Saylor Academy	CC-BY
Managerial Accounting	Saylor Academy	CC-BY
Managing Groups and Teams	WikiBooks	CC-BY-SA
Marketing	Boundless	CC-BY-SA
Mastering Strategic Management	Dave Ketchen, Jeremy Short	CC-NC-BY-SA
Money and Banking	Robert E. Wright	CC-NC-BY-SA
Negotiations and Conflict Management	Saylor Academy	CC-BY
Operations Management	Saylor Academy	CC-BY
Organizational Behavior	Saylor Academy	CC-BY
Organizational Behavior	Talya Bauer, Berrin Erdogan	CC-BY-NC-SA
Personal Finance	Rachel Siegel	CC-NC-BY-SA
Principles of Accounting	Larry Walther	ACARR
Principles of Economics	Libby Rittenberg, Timothy Tregarthen	CC-NC-BY-SA
Principles of Finance	Saylor Academy	CC-BY
Principles of Macroeconomics	Libby Rittenberg, Timothy Tregarthen	CC-NC-BY-SA
Principles of Management	Saylor Academy	CC-BY
Principles of Marketing	Saylor Academy	CC-BY
Project Management	Saylor Academy	CC-BY
Project Management	Merrie Barron, PMP, CSM, Andrew R. Barron	CC-BY
Project Management from Simple to Complex	Russell Darnall, John M. Preston	CC-NC-BY-SA
Remix: Making Art and Commerce Thrive in the Hybrid Economy	Lawrence Lessig	CC-BY-NC
Risk Management for Enterprises and Individuals	Etti Baranoff, Patrick Lee Brockett, Yehuda Kahane	CC-BY-NC-SA
Six Steps to Job Search Success	Caroline Ceniza-Levine, Connie Thanasoulis-Cerrachio	CC-BY-NC-SA
Small Business Management	Saylor Academy	CC-BY
Small Business Management in the 21st Century	David T. Cadden, Sandra L. Lueder	CC-NC-BY-SA
Statement of Values	William Frey	CC-BY-SA
Strategic Information Technology	Saylor Academy	CC-BY
Strategic Management	Saylor Academy	CC-BY
Survey of Economics	Libby Rittenberg	CC-NC-BY-SA
Sustainability, Innovation, and Entrepreneurship	Andrea Larson	CC-BY-NC-SA
The Art of Leadership and Supervision	Laura Portolese, Phil Upperman, Bob Trumpy	CC-NC-BY-SA
The Business Ethics Workshop	James Brusseau	CC-NC-BY-SA
The Environments of the Organization	William Frey	CC-BY-SA
The Legal and Ethical Environment of Business	Terence Lau, Lisa Johnson	CC-NC-BY-SA
The Legal Environment of Business	Don Mayer, Daniel Warner, George Siedel, Jethro K. Lieberman	CC-NC-BY-SA
The Market-Led Organisation	OpenLearn	CC-BY-NC-SA
The Principles of Management	Mason Carpenter, Talya Bauer, Berrin Erdogan, Jeremy Short	CC-BY-NC-SA
Tourism: The International Business	Robert Christie Mill	CC-BY
Unleashing the Ideavirus	Seth Godin	Custom

Applied Ecology	WikiBooks	CC-BY-SA
Chem I Virtual Textbook	Stephen Lower	CC-BY-NC
Chemical Principles	Richard E. Dickerson, Harry B. Gray, Gilbert P. Haight, Jr.	Custom
Chemistry	OpenLearn	CC-NC-BY-SA
Chemistry	FHSST Authors	GFDL
Chemistry – Basic	CK-12	CC-BY-NC
Chemistry – Intermediate	CK-12	CC-BY-NC
Chemistry Concepts – Intermediate	CK-12	CC-BY-NC
ChemWiki	UC Davis ChemWiki	CC-BY-NC-SA
ChemWiki – Analytical Chemistry	UC Davis ChemWiki	CC-BY-NC-SA
ChemWiki – Biological Chemistry	UC Davis ChemWiki	CC-BY-NC-SA
ChemWiki – History of Chemistry	UC Davis ChemWiki	CC-BY-NC-SA
ChemWiki – Inorganic Chemistry	UC Davis ChemWiki	CC-BY-NC-SA
ChemWiki – Organic Chemistry	UC Davis ChemWiki	CC-BY-NC-SA
ChemWiki – Physical & Theoretical Chemistry	UC Davis ChemWiki	CC-BY-NC-SA
Concept Development Studies in Chemistry	John S. Hutchinson	CC-BY
Environmental Chemistry	Dejene Ayele Tessema	CC-BY-SA
From Vitamins to Baked Goods: Real Applications of Organic Chemistry	CK-12	CC-BY-NC
General Chemistry I	Saylor Academy	CC-BY
General Chemistry: Principles, Patterns, and Applications (2 Volume Set)	Patricia Eldredge, Bruce Averill	CC-NC-BY-SA
Georgia Water	WikiBooks	CC-BY-SA
Getting Started	Stephen Lower	CC-BY-NC
Heat Transfer	WikiBooks	CC-BY-SA
Industrial Chemistry	Helen Njeri Njenga	CC-BY-SA
Inorganic Chemistry	Chrispin Kowenje	CC-BY-SA
Analytical Chemistry 2.1	David Harvey, DePauw University	CC BY-NC-SA
Introduction to Chemical Engineering Processes	WikiBooks	CC-BY-SA
Introductory Chemistry	David W. Ball	Custom
Introductory Chemistry 1	Dahir Mohamed Yusuf, Paul M. Shiundu	CC-BY-SA
Introductory Chemistry 2	Dejene Ayele Tessema	CC-BY-SA
Macromolecules in Biological System	Elias Narciso Matos	CC-BY-SA
Materials Science	WikiBooks	CC-BY-SA
Microfluidics	WikiBooks	CC-BY-SA
Microtechnology	WikiBooks	CC-BY-SA
NIOSH Pocket Guide to Chemical Hazards	National Institute for Occupational Safety and Health	PD
Open Chemistry (University of California, Irvine)	Curriki	CC-BY
Organic Chemistry	Daley & Daley	ACARR
Organic Chemistry 1	Mhehe & Korane	CC-BY-SA
Organic Chemistry 2	Mhehe	CC-BY-SA
Organic Chemistry with a Biological Emphasis, Vol. I	Timothy Soderberg	CC-BY-NC-SA
Organic Chemistry with a Biological Emphasis, Vol. II	Timothy Soderberg	CC-BY-NC-SA
Physical Chemistry 1	Onesmus M. Munyaki	CC-BY-SA
Physical Chemistry 2	Onesmus M. Munyati	CC-BY-SA
Separation, Electroanalytical and Spectrochemical Techniques	Vincent Makokha	CC-BY-SA
The Basics of General, Organic, and Biological Chemistry	David W. Ball, John W. Hill, Rhonda J. Scott	Custom
Virtual Textbook of Organic Chemistry	William Reusch	CC-BY-NC-ND
Volumetric Chemical Analysis	P. M. Shiundu	CC-BY-SA
Xray Crystallography	WikiBooks	CC-BY-SA

A College Student’s Guide to Computers in Education	Dave Moursund	CC-BY-NC
A Faculty Member’s Guide to Computers in Higher Education	Dave Moursund	CC-BY-NC
Abstraction	Stephen Wong, Dung Nguyen	CC-BY
Accessibility of eLearning	OpenLearn	CC-BY-NC-SA
Ada Programming	WikiBooks	CC-BY-SA
Advanced Artificial Intelligence	Saylor Academy	CC-BY
Advanced Databases	Saylor Academy	CC-BY
A-level Computing/AQA	WikiBooks	CC-BY-SA
Algorithms	WikiBooks	CC-BY-SA
Algorithms	Saylor Academy	CC-BY
An introduction to Data and Information	OpenLearn	CC-BY-NC-SA
Applescript for Absolute Starters	Bert Altenburg	CC-BY
Applications of ICT in Libraries	WikiBooks	CC-BY-SA
Association Learning + Technology Report	WikiBooks	CC-BY-NC-SA
Artificial Intelligence	Saylor Academy	CC-BY
Basic Computing Using Windows	WikiBooks	CC-BY-SA
Blown to Bits: Your Life, Liberty, and Happiness After the Digital Explosion	Hal Abelson, Kel Ledeen, Harry Lewis	CC-BY-NC-SA
Building Skills in Object-Oriented Design	Steven F. Lott	CC-BY-NC-ND
Building Skills in Programming	Steven F. Lott	CC-BY-NC-ND
Building Skills in Python	Steven F. Lott	CC-BY-NC-ND
Business Information Systems: Design an App for That	Raymond Frost, Jacqueline Pike, Lauren Kenyo, Sarah Pels	Custom
C Programming	WikiBooks	CC-BY-SA
C# Programming	WikiBooks	CC-BY-SA
C++ Programming	Saylor Academy	CC-BY
Cascading Style Sheets	WikiBooks	CC-BY-SA
CGI Programming on the World Wide Web	Shishir Gundavaram	CC-BY-NC-SA
Compilers	Saylor Academy	CC-BY
Computer Architecture	Saylor Academy	CC-BY
Computer Communications and Networks	Saylor Academy	CC-BY
An Introduction to Computer Networks	Peter Dordal, Loyola University of Chicago	CC BY-NC-ND
Cryptography	Saylor Academy	CC-BY
Discovering Information Systems: An Exploratory Approach	OpenUCT	CC-BY-NC-ND
Discrete Structures	Saylor Academy	CC-BY
Dive into HTML5	Mark Pilgrim	CC-BY
Dive into Python	Mark Pilgrim	GFDL
Electronic Commerce: The Strategic Perspective	Richard T. Watson, Pierre Berthon, Leyland F. Pitt, George M. Zinkhan	CC-BY
Elementary Data Structures	Saylor Academy	CC-BY
Eloquent JavaScript: A modern Intro to Programming	Marijn Haverbeke	CC-BY
Encyclopedia of Human-Computer Interaction	Interaction design foundation	CC-BY-ND
Essential Microsoft Office 2000 & 2007	Bernard John Poole, Rebecca L. Randall	Custom
Firefox Manual	Floss Manuals	CC-BY-SA
Flash Tutorials	WikiBooks	CC-BY-NC-SA
FLOSS Manuals	Floss Manuals	GNU-GPL
Free as in Freedom	Sam Williams	GFDL
GIS Commons: An Introductory Textbook on Geographic Information Systems	Michael Schmandt	CC-BY-SA
Graphics and Information Management Systems	Chifwepa, Vitalicy	CC-BY-SA
Grokking the Gimp	Carey Bunks	Open Publication
Haskell	WikiBooks	CC-BY-SA
How to Assemble a Desktop PC	WikiBooks	CC-BY-SA
How to Think Like a Computer Scientist: Learning with Python	Peter Wentworth, Jeffrey Elkner, Allen B. Downey, and Chris Meyers	GFDL
HyperText Markup Language	WikiBooks	CC
Information Security	Saylor Academy	CC-BY
Information System: A Manager’s Guide to Harnessing Technology V1.1	John Gallaugher	CC-NC-BY-SA
Information Systems: A Manager’s Guide to Harnessing Technology v1.2	John Gallaugher	CC-NC-BY-SA
Interpreting Information Systems in Organizations	Geoff Walsham	CC-BY
Introducing ICT Systems	OpenLearn	CC-BY-NC-SA
Introduction to Autonomous Robots	Corell	CC-BY-NC-ND
Introduction to C Programming	Richard Mobbs, Marina Carter	CC-BY-NC-SA
Introduction to Computer Science	Wikiversity	CC-BY-SA
Introduction to Computer Science I	Saylor Academy	CC-BY
Introduction to Computer Science II	Saylor Academy	CC-BY
Introduction to Computing: Explorations in Language, Logic, and Machines	David Evans	CC-BY-NA-SA
Introduction to Digital Logic with Laboratory Exercises	James Feher	CC-BY
Introduction to HTML	Richard Mobbs	CC-BY-NC-SA
Introduction to ICT	Gilford T. Hapanyengw	CC-BY-NC-SA
Introduction to Microsoft Excel 2007	D McKie	CC-BY-NC-SA
Introduction to Microsoft PowerPoint 2007	D McKie	CC-BY-SA
Introduction to Microsoft Windows XP	D McKie	CC-BY
Introduction to Microsoft Word 2007	D McKie	CC-BY
Introduction to Modern Database Systems	Saylor Academy	CC-BY
Introduction to Programming Using Java	David J. Eck	CC-BY-SA
Introduction to UNIX	Richard Mobbs	CC-BY-NC-SA
ItrainOnline Multimedia Training Kit	ItrainOnline	CC-BY-NC
LaTeX	WikiBooks	CC-BY-SA
Mobile Applications Development	Saylor Academy	CC-BY
Multimedia Design and Applications	Ekol, George L.	CC-BY-SA
Network Security	OpenLearn	CC-BY-NC-SA
Non-Programmer’s Tutorial for Python 2.0 & 2.6	WikiBooks	CC-BY-SA
Open Source Development with CVS, 3rd Edition	Moshe Bar	GNU-GPL
Operating Systems	Saylor Academy	CC-BY
Principles of Computer System Design: An Introduction (Part II)	Jerome H. Saltzer, M. Frans Kaashoek	CC-BY-NC-SA
Producing Open Source Software	Karl Fogel	CC-BY-SA
Programming from the Ground Up	Jonathan Bartlett	GFDL
Programming Fundamentals – A Modular Structured Approach Using C++	Kenneth Leroy Busbee	CC-BY
Programming in C	Kishori Mundargi	CC-BY-NC-SA
Programming Languages	Saylor Academy	CC-BY
Programming Languages: Application and Interpretation	Shriram Krishnamurthi	CC-NC-BY-SA
Project Management from Simple to Complex	Russell Darnall, John M. Preston	CC-BY-NC-SA
Python for Informatics: Exploring Information	Charles Severance	CC-BY-SA
Representing and Manipulating Data in Computers	OpenLearn	CC-BY-NC-SA
Software Engineering	Saylor Academy	CC-BY
Structure and Interpretation of Computer Programs	Harold Abelson, Gerald Jay Sussman, Julie Sussman	CC-BY-NC
Text-Based Productivity Tools	Elijah I. Omwenga	CC-BY-SA
The Cathedral and the Bazaar	Eric S. Raymond	Open Publication
The Future of the Internet and How to Stop It	Jonathan Zittrain	CC-BY-NC-SA
The Internet Superuser Textbook	Du Toit, Masha Malczyk, Anna van Belle, Jean-Paul	CC-BY-NC
The Wealth of Networks	Yochai Benkler	CC-BY-NC-SA 3.0
Think Python: An Introduction to Software Design	Allen B. Downey	GFDL
Understanding Open Source and Free Software Licensing	Andrew M. St. Laurent	CC-BY-ND
Using WikiBooks	WikiBooks	CC-BY-SA
Web Development	Saylor Academy	CC-BY
What is a Wiki?	Wiki	CC-BY-SA
Wireless Networking in the Developing World	Wireless Networking Authors	CC-BY-SA
x86 Disassembly	WikiBooks	CC-BY-SA
XForms	WikiBooks	CC-BY-SA
XML – Managing Data Exchange	WikiBooks	CC-BY-SA

An Outline of the U.S. Economy	Christopher Conte	PD
Econometrics	Bruce E. Hansen	Custom
Economics	Boundless	CC-BY-SA
Financial Accounting	Joe Ben Hoyle, C. J. Skender	CC-NC-BY-SA
Financial Analysis	John Petroff	CC-BY-NC-SA
Historical Beginnings: The Federal Reserve	Roger T. Johnson	PD
Intermediate Macroeconomics	Saylor Academy	CC-BY
Intermediate Microeconomics	Saylor Academy	CC-BY
International Economics: Theory and Policy	Steve Suranovic	CC-BY-NC-SA
International Finance: Theory and Policy	Steve Suranovic	CC-BY-NC-SA
International Trade	Saylor Academy	CC-BY
Boundless Economics	Independent	CC BY-SA
Introduction to Economic Analysis	R. Preston McAfee, Tracy R. Lewis	CC-BY-NC-SA
Living Economics	LivingEconomics.org	CC-BY-SA
Macroeconomics	John Petroff	CC-BY-NC-SA
Managerial Accounting	Kurt Heisinger, Joe Ben Hoyle	CC-NC-BY-SA
Microeconomics	John Petroff	CC-BY-NC-SA
Microeconomics: Markets, Methods and Models	Doug Curtis, Ian Irvine	CC BY-NC-SA
Microeconomics: Theory Through Applications	Russell Cooper, Andrew John	CC-BY-NC-SA
Money and Banking	Robert E. Wright, Vincenzo Quadrini	CC-BY-NC-SA
New Rules for the New Economy	Kevin Kelly	CC-BY
Political Economy	WikiBooks	CC-BY-SA
Economics – Theory Through Applications	Open Learning Initiative	CC-NC-BY-SA
Principles of Economics	Libby Rittenberg, Timothy Tregarthen	CC-BY-NC-SA
ECON102: Principles of Macroeconomics	Saylor Academy	CC-BY
Principles of Microeconomics	Saylor Academy	CC-BY
Principles of Microeconomics	Libby Rittenberg, Timothy Tregarthen	CC-BY-NC-SA
Quantum Microeconomics	Chris Gaskett	CC-BY-NC
The Wealth of Networks: How Social Production Transforms Markets and Freedom	Yochai Benkler	CC-BY-NC-SA
Upsetting the Offset: The Political Economy of Carbon Markets	Steffen Böhm	CC-BY-NC-ND

Access to Knowledge: A Guide for Everyone	Frederick Noronha, Jeremy Malcolm	CC-BY-SA
Classroom Management and Supervision	Ridwan Mohamed Osman	CC-BY-SA
College Success	Bruce Beiderwell, Linda F. Tse, Tom Lochhaas and Nicholas B. deKanter	CC-BY-NC
Common Wisdom: Peer Production of Educational Materials	Yochai Benkler	CC-BY-NC
Comparative Education	Emmy H. Embozi	CC-BY-SA
Contemporary Issues in Education	Ssemanda Enosi	CC-BY-SA
Copyright for Librarians	Berkman Center for Internet & Society, Electronic Information for Libraries	CC-BY-SA
Creating Open Educational Resources	Berkman Center for Internet & Society, Electronic Information for Libraries	CC-NC-BY-SA
Curriculum Studies	Grace Nyagah	CC-BY-SA
Dance Skills	OpenLearn	CC-BY-NC-SA
Developmental Psychology	John T. Phiri	CC-BY-SA
Distinction Through Discovery: A Research-Oriented First Year Experience	Florida Atlantic University Nyagah, Grace	CC-BY-NC-ND
Education for an Information Age	Bernard John Poole	Custom
Educational Communication	George L. Ekol	CC-BY-SA
Educational Evaluation and Testing	Ridwan Mohamed Osman	CC-BY-SA
Educational Management	Gerald Ngugi Kimani	CC-BY-SA
Educational Research	Ridwan Mohamed Osman	CC-BY-SA
Emerging Perspectives on Learning, Teaching, and Technology	Michael Orey	CC-BY-SA
Essential Microsoft Office 2003	Bernard John Poole, Lorrie Jackson, Rebecca L. Randall	Custom
Essential Microsoft Office XP	Bernard John Poole, Lorrie Jackson, Rebecca L. Randall	Custom
Experiencing the Humanities	Richard Jewell	Custom
Handbook of Emerging Technologies for Learning	George Siemens, Peter Tittenberger	CC-BY-NC
History of Education	Ssemanda Enosi	CC-BY-SA
How People Learn: Brain, Mind, Experience, School	Board on Behavioral, Cognitive, and Sensory Sciences, Division of Behavioral and Social Sciences and Education	Custom
ICT Integration in Biology	Mamadou Sarr, Salomon Tchameni Ngamo	CC-BY-SA
ICT Integration in Chemistry	Gilbert Oke Onwu, Salomon Tchameni Ngamo	CC-BY-SA
ICT Integration in Mathematics	Chris Olley, Solomon Tchamen Ngamo	CC-BY-SA
ICT Integration in Physics	Sémou Diouf, Salomon Tchameni Ngamo	CC-BY-SA
Instructional Design Models	WikiBooks	CC-BY-NC-SA
Introduction to General Psychology (for Educators)	Auma Okumu	CC-BY-SA
Introduction to Guidance and Counseling (for educators)	Auma Okumu	CC-BY-SA
Key Skills: Making a Difference	OpenLearn
Learning Psychology	Catherine W Denyeko	CC-BY-SA
Learning Science in Informal Environments: People, Places and Pursuits	Philip Bell, Bruce Lewenstein, Andrew W. Shouse, Michael A. Feder	Custom
Managing a School’s Educational Resources	Judith Razafimbelo	CC-BY-SA
Media Education Kit	UNESCO	CC-BY-NC-SA
Mobile Learning: Transforming the Delivery of Education and Training	Mohamed Ally	CC-BY-NC-SA
OER Handbook for Educators 1.0	Open Educational Resources	CC-BY
Open Educational Content – Introduction and Tutorials	Open Educational Resources	CC-BY-SA
Open Educational Resources Conversations in Cyberspace	Open Educational Resources	CC-BY-NC-SA
Philosophy of Education	Samson O. Gunga	CC-BY-SA
Reflective Teaching	Jane Ciumwari Gatumu	CC-BY-SA
Social and Cultural Foundations of American Education	WikiBooks	CC-BY-SA
Sociology of Education	Cyrille Mihamitsy	CC-BY-SA
Special Needs Education	Edward Ntare Rutondoki	CC-BY-SA
Study Skills	Student Development and Support Service	CC-BY-NC-SA
Teaching in a digital age	A.W. (Tony) Bates	CC-BY-NC
Teaching Methodology	Caroline W Ndirangu	CC-BY-SA
The Art of Reading at University	Joyce Leung, Donna McGee Thompson	CC-BY-SA
The Instructional Use of Learning Objects	David Wiley	OPL
The Public Domain Enclosing the Commons of the Mind	James Boyle	CC-BY-NC-SA
The Theory and Practice of Online Learning 2nd ed	Terry Anderson	CC-NC-BY-SA)

A Beginner’s Arduino Guide	WikiBooks	CC-BY-SA
A Guide To PIC Microcontroller Documentation	WikiBooks	CC-BY-SA
Advanced Mathematics for Engineers and Scientists	WikiBooks	CC-BY-SA
Advanced Robotics Book	WikiBooks	CC-BY-SA
Advanced Structural Analysis	WikiBooks	CC-BY-SA
Analog and Digital Conversion	WikiBooks	CC-BY-SA
Analogue Electronics	WikiBooks	CC-BY-SA
Analysis and Design of the Traffic Control System	WikiBooks	CC-BY-SA
Applied Robotics	WikiBooks	CC-BY-SA
Artificial Neural Networks	WikiBooks	CC-BY-SA
ATRIAS 2.1 Handbook	WikiBooks	CC-BY-SA
Basic Electrical Generation and Distribution	WikiBooks	CC-BY-SA
Battery Power	WikiBooks	CC-BY-SA
Build Your Own Solar Power Generator	WikiBooks	CC-BY-SA
Building Services	WikiBooks	CC-BY-SA
Chemical Engineering Process Dynamics and Controls	University of Calgary	CC-BY
Chip Design Made Easy	WikiBooks	CC-BY-SA
Circuit Idea	WikiBooks	CC-BY-SA
Clock and Data Recovery	WikiBooks	CC-BY-SA
Communication Networks	WikiBooks	CC-BY-SA
Communication Systems	WikiBooks	CC-BY-SA
Computer Systems Engineering	WikiBooks	CC-BY-SA
Consumer Electronics Certification and Regulation	WikiBooks	CC-BY-SA
Cyberbotics’ Robot Curriculum	WikiBooks	CC-BY-SA
Data Coding Theory	WikiBooks	CC-BY-SA
Digital Circuit Projects: An Overview of Digital Circuits Through Implementing Integrated Circuits	Charles W. Kann	CC-BY
Digital Circuits	WikiBooks	CC-BY-SA
Digital Electronics	WikiBooks	CC-BY-SA
Digital Integrated Circuits	WikiBooks	CC-BY-SA
Digital Signal Processing	WikiBooks	CC-BY-SA
Digital Television	WikiBooks	CC-BY-SA
Electric Motors And Generators	WikiBooks	CC-BY-SA
Electric Vehicle Conversion	WikiBooks	CC-BY-SA
Electrical Installations	WikiBooks	CC-BY-SA
Electrickery	WikiBooks	CC-BY-SA
Electronics	WikiBooks	CC-BY-SA
Electronics Communication	WikiBooks	CC-BY-SA
Electronics Fundamentals	WikiBooks	CC-BY-SA
Electronics Handbook	WikiBooks	CC-BY-SA
Embedded Control Systems Design	WikiBooks	CC-BY-SA
Embedded Control Systems for Intelligent Machines	WikiBooks	CC-BY-SA
Embedded Systems	WikiBooks	CC-BY-SA
Energy and Power: Production, Distribution, and Society	WikiBooks	CC-BY-SA
Energy Efficiency Reference	WikiBooks	CC-BY-SA
Engineering Analysis	WikiBooks	CC-BY-SA
Engineering Geology	WikiBooks	CC-BY-SA
Engineering Guesstimations	WikiBooks	CC-BY-SA
Engineering Statics	OpenLearning	CC-NC-BY-SA
Engineering Tables	WikiBooks	CC-BY-SA
Engineering: An Introduction for High School	CK-12	CC-BY-NC
Engineering: An Introduction to Solving Engineering Problems with Matlab	CK-12	CC-BY-NC
Evolution of Operating Systems Designs	WikiBooks	CC-BY-SA
Expert Systems	WikiBooks	CC-BY-SA
Fire Simulation for Engineers	WikiBooks	CC-BY-SA
Floating Point	WikiBooks	CC-BY-SA
Fundamental Digital Electronics	WikiBooks	CC-BY-SA
Fundamental Specifications for Steel Construction	WikiBooks	CC-BY-SA
Fundamentals of Electrical Engineering I	Don Johnson	CC-BY
Fundamentals of Transportation	WikiBooks	CC-BY-SA
General Engineering Introduction	WikiBooks	CC-BY-SA
Geothermal Heating and Cooling	WikiBooks	CC-BY-SA
High School Engineering	WikiBooks	CC-BY-SA
House Construction	WikiBooks	CC-BY-SA
Introductory PLC Programming	WikiBooks	CC-BY-SA
IRule	WikiBooks	CC-BY-SA
Kicad	WikiBooks	CC-BY-SA
Learn Electronics	WikiBooks	CC-BY-SA
Lentis	WikiBooks	CC-BY-SA
Lessons in Electric Circuits, Vol I DC	Tony R. Kuphaldt	Custom
Materials in Electronics	WikiBooks	CC-BY-SA
Mechanics of Engineering	Madhukar Vable	Custom
Microprocessor Design	WikiBooks	CC-BY-SA
Mindstorms Robotics	WikiBooks	CC-BY-SA
MyHDL and the NEXYS 2 Board	WikiBooks	CC-BY-SA
Open Standards	WikiBooks	CC-BY-SA
Operating System Design	WikiBooks	CC-BY-SA
OPT Design	WikiBooks	CC-BY-SA
Power Electronics	WikiBooks	CC-BY-SA
Practical Electronics	WikiBooks	CC-BY-SA
Professionalism	WikiBooks	CC-BY-SA
Programmable Logic	WikiBooks	CC-BY-SA
Random Processes in Communication and Control	WikiBooks	CC-BY-SA
Release Management	WikiBooks	CC-BY-SA
Reverse Engineering	WikiBooks	CC-BY-SA
Robotics	WikiBooks	CC-BY-SA
Robotics and the World	WikiBooks	CC-BY-SA
Robotics Kinematics and Dynamics	WikiBooks	CC-BY-SA
Semiconductor Electronics	WikiBooks	CC-BY-SA
Semiconductors	WikiBooks	CC-BY-SA
Serial Programming	WikiBooks	CC-BY-SA
Signal Processing	WikiBooks	CC-BY-SA
Signals and Systems	WikiBooks	CC-BY-SA
Socratic Electronics A Resource for Inquiry-Based Electronics Instruction	Tony R. Kuphaldt	CC-BY
Software Quality Assurance	WikiBooks	CC-BY-SA
Soil Mechanics	WikiBooks	CC-BY-SA
Technologies for Rural Development	WikiBooks	CC-BY-SA
Telescope Making	WikiBooks	CC-BY-SA
The Art of Cities	WikiBooks	CC-BY-SA
Transportation Economics	WikiBooks	CC-BY-SA
Transportation Geography and Network Science	WikiBooks	CC-BY-SA
Transportation Systems Simulation – A Tutorial for Multi-Modal Simulation Using VISSIM	WikiBooks	CC-BY-SA
Understanding Multitouch	WikiBooks	CC-BY-SA
Urban Traffic Operations	WikiBooks	CC-BY-SA
VHDL for FPGA Design	WikiBooks	CC-BY-SA
Vibrations of Structures	WikiBooks	CC-BY-SA
Water Resources Directory	WikiBooks	CC-BY-SA
Weatherization	WikiBooks	CC-BY-SA
What is Testing?	CK-12	CC-BY-NC
WikiRobotics	WikiBooks	CC-BY-SA

A Celebration of Women Writers ed. by Ockerbloom	Alice Lee Moqué	PD
Basic Speller Student Materials	CK-12	CC-BY-NC
Clear Simple: Developing Effective Print Materials for Low-Literate Readers	NIH	PD
Commonsense Composition	CK-12	CC-BY-NC
Electronic Literature Collection	Electronic Literature Organization	CC-BY-NC-ND
English Composition I	Saylor Academy	CC-BY
English Composition II	Saylor Academy	CC-BY
Exploring Perspectives: A Concise Guide to Analysis	Randall Fallows	CC-BY-NC-SA
Foundations of Academic Success: Words of Wisdom	Thomas C. Priester	CC-NC-BY-SA
Journalism 101	CK-12	CC-BY-NC
Pre-College English	Saylor Academy	CC-BY
About Writing: A Guide	Robin Jeffrey	CC BY
Start Writing Fiction	OpenLearn	CC-NC-BY-SA
Style for Students Online: Effective Technical Writing in the Information Age	Joe Schall	CC-BY-NC-SA
Technical Report Writing	Carol A. Vidoli	PD
Technical Writing	Saylor Academy	CC-BY
The American Renaissance	Saylor Academy	CC-BY
The Flat World Knowledge Handbook	Miles McCrimmon	CC-NC-BY-SA
The Glyfada Method	CK-12	CC-BY-NC
The Information Literacy User’s Guide: An Open, Online Textbook	Trudi Jacobson, Greg Bobish, Deborah Bernnard, Daryl Bullis, Jenna Hecker, Irina Holden, Allison Hosier, Tor Loney	CC-NC-BY-SA
Three Modules on Clear Writing Style: An Introduction to The Craft of Argument	The Cain Project in Engineering and Professional Communication	CC-BY
University of North Carolina College Writing	UNC-Chapel Hill	CC-BY-NC-ND
Writing	Boundless	CC-BY-SA
Writing in College: From Competence to Excellence	Amy Guptill	CC-NC-BY-SA
Writing Spaces: Readings on Writing, Volume 1	Writing Spaces	CC-BY-NC-ND
Writing Spaces: Readings on Writing, Volume 2	Writing Spaces	CC-BY-NC-ND

A Comprehensive Outline of World History 1	Jack E. Maxfield	CC-BY
A History of the United States, Vol. 2	David J. Trowbridge	CC-BY-NC-SA
A Short Introduction to Japanese History	Christopher Spackman	Custom
About America: GPA Publications	IIP DIGITAL	PD
Canadian History: Pre-Confederation	BCcampus OpenEd	PD
Canadian History: Post-Confederation	BCcampus OpenEd	PD
European History	WikiBooks	CC-BY-SA
Global Perspectives on Industrialization	Saylor Academy	CC-BY
Historical Geology	WikiBooks	CC-BY-SA
Modern Revolutions	Saylor Academy	CC-BY
New Zealand History	WikiBooks	CC-BY-SA
Our Documents Teacher Sourcebook	National Initiative on American History, Civics, and Service	PD
Sage American History	H.J. Sage	CC-BY-NC-SA
Stories of the Underground Railroad	Anna L. Curtis	PD
Teaching with Documents	Open Educational Resources	PD
The Berlin Wall 20 Years After	Michael Jay Friedman	PD
The French Revolution	OpenLearn	CC-BY-NC-SA
The Holocaust	OpenLearn	CC-BY-NC-SA
U.S. History	WikiBooks	CC-BY-SA
U.S. History	Boundless	CC-BY-SA
U.S. History Sourcebook – Advanced	CK-12	CC-BY-NC
U.S. History Sourcebook – Basic	CK-12	CC-BY-NC
UK Constitution and Government	WikiBooks	CC-BY-SA
US History since 1877	Dr. James Ross-Nazzal	CC-BY
World History in the Early Modern and Modern Eras (1600-Present)	Saylor Academy	CC-BY

Business Communication for Success	Scott McLean	CC-BY-NC-SA
Communication in the Real World: An Introduction to Communication Studies	Richard G. Jones, Jr.	CC-BY-NC-SA
Professional Communication Skills for Leaders	LMI PCSL Core Curriculum Lower Mekong Initiative	CC-BY
Communication Theory	WikiBooks	CC-BY-SA
Communications Skills Textbook	Foundation OER	CC-BY-NC-SA
Deutsch im Blick	Dr. Zsuzsanna Abrams	CC-BY-NC-ND
Francais Interactif	University of Texas at Austin	CC-BY
Liberté	Open Learning Initiative	CC-NC-BY-SA
Chapeau! First-Year French	Open Learning Initiative	CC-NC-BY-SA
From Sound to Meaning: Hearing, Speech and Language	OpenLearn	CC-BY-NC-SA
Hearing	OpenLearn	CC-BY-SA
How Language Works: The Cognitive Science of Linguistics	Michael Gasser	GFDL
How to Communicate as a Health Volunteer	Mr. Daniel Erchick	CC-BY
How to Present with Twitter	Olivia Mitchell	CC-BY-NC-ND
Introduction to Public Speaking	Coursera	CC-BY-SA
WAC and Second-Language Writers: Research Towards Linguistically and Culturally Inclusive Programs and Practices	WAC Clearinghouse	CC BY-NC-ND
Key Skill Assessment: Communication	OpenLearn	CC-BY-NC-SA
Latin	WikiBooks	CC-BY-SA
Liberté	Gretchen Angelo	CC-BY-NC-SA
Miskito	WikiBooks	CC-BY-SA
Mobile ESL	Dr. James O’Driscoll	CC-BY-NC-SA
Open Translation Tools	Open Translation Tools	GNU-GPL
Oral Communications	LearnHigher	CC-BY-NC-SA
Organizational Communication: Theory, Research, and Practice	Mark Ward Sr., Jason S. Wrench	CC-BY-NC-SA
Principles Of Human Communication	Saylor Academy	CC-BY
Public Relations	Saylor Academy	CC-BY
Public Speaking	Saylor Academy	CC-BY
Spanish	WikiBooks	CC-BY-SA
Spanish I	Wikiversity	CC-BY-SA
Stand up, Speak out: The Practice and Ethics of Public Speaking	Anne Goding, Jason S. Wrench, Danette Ifert Johnson	CC-BY-NC-SA
Stuttering	WikiBooks	CC-BY-SA
Technical Communication	Pau-San Haruta	CC-BY-NC-SA
We Are the Media	Dan Gillmor	CC

Annotated Republic of China Laws	WikiBooks	CC-BY-SA
Annotated Republic of China Regulations	WikiBooks	CC-BY-SA
Computer-Aided Exercises in Civil Procedure	Roger C. Park, Douglas D. McFarland	CC-BY-NC-SA
Copyright for the Rest of Us	Marcia Keyser	CC-BY
Criminal Law	Lisa M. Storm	CC-BY-NC-SA
Evidence: Best Evidence Rule	Colin Miller	CC-BY-NC-SA
Evidence: Jury Impeachment	Colin Miller	CC-BY-NC-SA
Federal Rules of Appellate Procedure (With Forms)	Cornell Universiry Law School	CC-BY-NC-SA
Federal Rules of Civil Procedure	Cornell Universiry Law School	CC-BY-NC-SA
Federal Rules of Criminal Procedure	Cornell Universiry Law School	CC-BY-NC-SA
Intellectual Property and the Internet	WikiBooks	CC-BY-SA
Introduction to Basic Legal Citation	Peter W. Martin	CC-BY-NC-SA
Land Use	Christian Turner	CC-BY-NC-SA
Legal Aspects of Text and Data Mining	WikiBooks	CC-BY-SA
Legal framework of textual data processing for Machine Translation and Language Technology research and development activities	WikiBooks	CC-BY-SA
The Ethics of Tax Lawyering	Michael Hatfield	CC-BY-SA
The Wealth of Networks	The Wealth of Networks	CC-BY-NC-SA)
U.S. Bankruptcy Code and Federal Rules of Bankruptcy Procedure (FRBP)	Cornell University Law School	CC-BY-SA

American Literature Before 1860	Theodore L. Steinberg	CC-BY-NC-SA
English Literature: Victorians and Moderns	BCcampus OpenEd	PD
Literature, the Humanities, and Humanity	Theodore L. Steinberg	CC-BY-NC-SA
Open Shakespeare	Columbia University	CC-BY

A Computational Introduction to Number Theory and Algebra	Shoup	CC-BY-ND-NC
A Concise Introduction to Logic	Craig DeLancey	CC-BY-NC-SA
A First Course in Linear Algebra	Beezer	GFDL
A Modern Formal Logic Primer	Teller	Custom
A Problem Text in Advanced Calculus	Erdman	CC-BY-NC-SA
Abstract Algebra: Theory and Applications	Tom Judson	GFDL
Advanced Algebra II: Activities and Homework by Felder	Kenny M. Felder	CC-BY
Advanced Algebra II: Conceptual Explanations by Felder	Kenny M. Felder	CC-BY
Advanced Statistics	Saylor Academy	CC-BY
Algebra	Khan Academemy	CC-BY-SA
Algebra	Saylor Academy	CC-BY
Algebra – Basic	CK-12	CC-BY-NC
Algebra Explorations Concepts, Pre-K through Grade 7	CK-12	CC-BY-NC
Algebra I	Rawley, Gloag, Gloag	CC-BY-SA
Algebra II with Trigonometry	CK-12	CC-BY-NC
Algebra II with Trigonometry Concepts	CK-12	CC-BY-NC
An Introduction to MATLAB and Mathcad	Siemers	CC-BY-NC
Analysis	Khalagai	CC-BY-SA
APEX Calculus	Hartman, Heinold, Siemers, Chalishajar, Bower	CC-BY-NC
Applied Discrete Structures	Doerr, Levasseur	CC-BY-NC-SA
Applied Finite Mathematics	Sekhon	CC-BY
Basic Algebra	WikiBooks	CC-BY-SA
Basic Algebra Concepts	CK-12	CC-BY-NC
Basic Analysis: Introduction to Real Analysis	Lebl	CC-BY-NC-SA
Basic Arithmetic Student Handbook	Dept. of Mathematics, Scottsdale Community College	CC-BY-SA
Basic Geometry Concept	CK-12	CC-BY-NC
Basic Math Textbook for the Community College	Brown	CC-BY
Basic Mathematics	Lebl	CC-BY-SA
Brief Calculus	Crowell	CC-BY-SA
CK-12 Calculus	CK-12	CC-BY-NC
Calculus 1	Saylor Academy	CC-BY
Calculus AB	Saylor Academy	CC-BY
Calculus Concepts	CK-12	CC-BY-NC
College Algebra	Carl Stitz, Jeff Zeager	CC-BY-NC-SA
College Algebra	Saylor Academy	CC-BY
College Trigonometry	Carl Stitz, Jeff Zeager	CC-BY-NC-SA
Computing Technology for Math Excellence	Dr. Patricia Deubel	N/A
Conceptos de Álgebra II con Trigonometría – en Español	CK-12	CC-BY-NC
Diagrams, Charts and Graphs	OpenLearn	CC-BY-NC-SA
Difference Equations to Differential Equations	Sloughter	CC-BY-NC-SA
Differential Equations	Ekol	CC-BY-SA
Dimensions (video)	Alvarez, Ghys, Leys	CC-BY-NC-ND
Elementary Algebra	Burzynski, Ellis	CC-BY
Elementary Algebra	Redden	ACARR
Elementary Calculus An Approach Using Infinitesimals	Keisler	CC-BY-NC-SA
Elementary Differential Equations	William F. Trench	CC-BY-NC-SA
Elementary Differential Equations with Boundary Value Problems Student Solutions Manual	William F. Trench	CC-BY-NC-SA
Elementary Linear Algebra	Kuttler	CC-BY
Foundations of Real World Math	Saylor Academy	CC-BY
Functions Defined	Improper Integrals	CC-BY-NC-SA
Fundamentals of Mathematics	Burzynski, Ellis	CC-BY
Gentle Introduction to the Arts of Mathematics	Joe Fields	CC-BY-NC-SA
Geometry	OpenLearn	CC-BY-NC-SA
RWM103: Geometry	Saylor Academy	CC-BY
Geometry – Basic	CK-12	CC-BY-NC
High School Mathematics Extensions	WikiBooks	CC-BY-SA
How We Got from There to Here: A Story of Real Analysis	Robert Rogers and Eugene Boman	CC-BY-NC-SA
Intermediate Algebra	Redden	CC-BY-NC-SA
Intermediate Algebra Student Workbook	Scottsdale Community College	CC-BY-SA
Introduction to Mathematical Reasoning	Saylor Academy	CC-BY
Introduction to Matrix Algebra	Kaw	CC-BY-NC-ND
Introduction to Real Analysis	Trench	CC-BY-NC-SA
Introduction to the Modeling and Analysis of Complex Systems	Hiroki Sayama	CC-BY-NC-SA
Introductory Algebra Student Handbook	Scottsdale Community College	CC-BY-SA
Linear Algebra	Cherney, Denton, and Waldron	CC-BY-NC-SA
Linear Algebra, Theory and Applications	Kuttler	CC-BY
Linear Programming	Mtetwa	CC-BY-SA
Math Analysis	CK-12	CC-BY-NC
Math Analysis Concept	CK-12	CC-BY-NC
Math in a Sustainable Society	Kaslik	CC-BY-NC
Math in Society	Lippman	CC-BY-SA
Mathematics	The Free High School Science Texts	GFDL
Mechanics	Chihaka	CC-BY
Middle School Math – Grade 6	CK-12	CC-BY-NC
Middle School Math – Grade 7	CK-12	CC-BY-NC
Middle School Math – Grade 8	CK-12	CC-BY-NC
Middle School Math Concepts – Grade 6	CK-12	CC-BY-NC
Middle School Math Concepts – Grade 7	CK-12	CC-BY-NC
Middle School Math Concepts – Grade 8	CK-12	CC-BY-NC
Natural Resources Biometrics	Diane Kiernan	CC-BY-NC-SA
Notes on Diffy Qs: Differential Equations for Engineers	Lebl Ralph W. P Masenge	CC-BY-NC-SA
Number Theory	Ralph W. P Masenge	CC-BY
Numbers, Units, and Arithmetic	OpenLearn	CC-BY-NC-SA
Numerical Methods	Masenge	CC-BY-SA
Numerical Methods with Applications	Kaw, Kalu, Nguyen	CC-BY-NC-SA
PreAlgebra (Khan Academy)	Reuger; CSN	Custom
Precalculus	Stitz, Zeager	CC-BY-NC-SA
Precalculus Concepts	CK-12	CC-BY-NC
Precalculus: An Investigation of Functions	Lippman, Rasmussen	CC-BY-SA
Probability and Statistics	Chege	CC-BY-SA
Proofs and Concepts: the fundamentals of abstract mathematics	Morris	CC-BY-NC-SA
Ratios, Proportion and Percentages	OpenLearn	CC-BY-NC-SA
Reasonable Basic Algebra	Schremmer	GFDL
Reasonable Decimal Arithmetic	Schremmer	GFDL
Rounding and Estimation	OpenLearn	CC-BY-NC-SA
Single Variable Calculus	Almukkahal, Cifarelli, Fan, Jarvis	CC-BY-NC-SA
Single-Variable Calculus I	Saylor Academy	CC-BY
Squares, Roots and Powers	OpenLearn	CC-BY-NC-SA
Tea Time Numerical Analysis	Brin	CC-BY-SA
Texas Instruments Calculus Student Edition	CK-12	CC-BY-NC
Texas Instruments Trigonometry Student Edition	CK-12	CC-BY-NC
The Essential Elementary & Intermediate Algebra	Blakely	CC-BY-NC-SA
Trigonometry	Corral	GFDL
Trigonometry	WikiBooks	CC-BY-SA
Trigonometry – Second Edition	CK-12	CC-BY-NC
Trigonometry Concepts	CK-12	CC-BY-NC
Vector Calculus	Corral	GFDL
Worldwide Differential Calculus	Massey	ACARR

Acoustics	WikiBooks	CC-BY-SA
Guitar	WikiBooks	CC-BY-SA
Music Fundamentals 1: Pitch and Major Scales and Keys	OpenStax CNX	CC BY
Introduction to Music Theory	Catherine Schmidt-Jones	CC-BY
Musictheory.Net	Musictheory	CC-BY
Reading Music: Common Notation	Catherine Schmidt-Jones	CC-BY
Sound of Physics	James McLean	CC-BY-NC-SA
The Basic Elements of Music	Catherine Schmidt-Jones	CC-BY
Understanding Basic Music Theory	Catherine Schmidt-Jones	CC-BY

Active, Healthy Lifestyles	OpenLearn	CC-NC-BY-SA
Anatomy and Physiology of Animals	WikiBooks	CC-BY-SA
Developing Anesthesia	Dr. David Pescod	CC-BY
Drugs, Brains, and Behavior – The Science of Addiction	NIH	PD
Epidemiology and Prevention of Vaccine Preventable Disease 10th ed.	Centers for Disease Control and Prevention	PD
Essentials of Nutrition: A Functional Approach	Maureen Zimmerman, Beth Snow	CC-BY-NC-SA
First Aid	WikiBooks	CC-BY-SA
Health Now: An Integrative Approach to Personal Health	Linda B. White	CC-BY-NC-SA
History of Medicine	NIH	PD
HIV and AIDS	Engender Health	Custom
Infection Prevention	Engender Health	Custom
Integrated Safety, Health and Environmental Management: An Introduction	OpenLearn	CC-BY-NC-SA
Medical Knowledge Base	GANFYD	BY-NC-SA
Medicines by Design	NIH	PD
MedlinePlus	NIH	PD
NIH Curriculum Supplement Series	NIH	PD
Obesity: Balanced Diets and Treatment	OpenLearn	CC-BY-NC-SA
Occupational Health	World Health Organization	CC-BY-NC-SA
Principles of Human Nutrition	Johns Hopkins	CC-BY-NC-SA
Public Health	Health Knowledge	Custom
Steps to Success: Crossing the Bridge Between Literacy Research and Practice	Kristen A. Munger, Bryan Ripley Crandall, Kathleen A. Cullen, Michelle A. Duffy, Tess M. Dussling, Elizabeth C. Lewis, Vicki McQuitty, Maria S. Murray, Joanne E. O’Toole, Joanna M. Robertson, Elizabeth Y. Stevens	CC-BY-NC-SA
Systems Thinking In Public Health	Johns Hopkins University	CC-BY-SA
The Chemistry of Health	NIH	PD
Vaccination	OpenLearn	CC-BY-NC-SA

An Introduction to Philosophy	Philip Pecorino	CC-BY-NC-ND
Computers, Information Technology, the Internet, Ethics, Society and Human Values	Philip Pecorino	CC-BY-NC-SA
Consciousness Studies	WikiBooks	CC-BY-SA
David Hume	OpenLearn	CC-NC-BY-SA
Environmental Ethics, Justice, and World Views	Saylor Academy	CC-BY
Existentialism	Saylor Academy	CC-BY
Formal Logic	WikiBooks	CC-BY-SA
Historical Introduction to Philosophy	Wikiversity	CC-BY-SA
Introducing Philosophy	OpenLearn	CC-NC-BY-SA
Introduction to Ethical Studies	Lee Archie, John G. Archie	GDFL
Introduction to Formal Logic	P.D. Magnus	CC-BY-SA
Logic and Proofs	Open Learning	CC-NC-BY-SA
Medical Ethics	Philip A. Pecorino	CC-BY-NC-ND
Modern Philosophy	BCcampus OpenEd	CC-BY
Moral and Political Philosophy	Saylor Academy	CC-BY-NC-SA
Philosophy of Religion	Philip A. Pecorino	CC-BY-NC-ND
Reading for Philosophical Inquiry: A Brief Introduction to Philosophical Thinking, An Open Source Reader	Lee Archie, John G. Archie	GFDL

21st Century Physics	CK-12	CC-BY-SA
A Radically Modern Approach to Introductory Physics – Vol 1	David J. Raymond	GFDL
A Radically Modern Approach to Introductory Physics – Vol 2	David J. Raymond	GFDL
All About Circuits	All About Circuits	DSL
Atomic Physics	C. A. Kiwanga	CC-BY-SA
Basic Physics	CK-12	CC-BY-SA
Basic Physics of Nuclear Medicine	WikiBooks	CC-BY-SA
Calculus-Based Physics	Jeffrey W. Schnick	CC-BY-SA
Chaos: Classical and Quantum	Predrag Cvitanovic´	GFDL
College Physics	Paul Peter Urone, Roger Hinrichs	CC-BY
Conceptual Physics	Benjamin Crowell	CC-BY-SA
Diablo Canyon Nuclear Power Plant: The WikiBook	WikiBooks	CC-BY-SA
Electricity and Magnetism	Sam Kinyera Obwoya	CC-BY-SA
Electricity and Magnetism 2	Henri Rasolondramanitra	CC-BY-SA
Electronics	Sam Kinyera Obwoya	CC-BY-SA
FHSST Physics	WikiBooks	CC-BY-SA
Fukushima Aftermath	WikiBooks	CC-BY-SA
Fukushima Aftermath: Whither the Indian Point Nuke?	WikiBooks	CC-BY-SA
General Relativity	Ben Crowell	CC-BY-SA
Geometrical Optics and Physical Optics	Herimanda A Ramilison	CC-BY-SA
University Physics Volume 2	OpenStax	CC BY
Introduction to Electromagnetism	Saylor Academy	CC-BY
Introduction to Mechanics	Saylor Academy	CC-BY
Introductory Neutronics	WikiBooks	CC-BY-SA
Light and Matter	Ben Crowell	CC-BY-SA
Mathematical Physics I	René Yves Rasoanaivo	CC-BY-SA
Mathematical Physics II	Issakha Youm	CC-BY-SA
Mechanics	Ben Crowel	CC-BY-SA
Mechanics II	Tilahun Tesfaye	CC-BY-SA
Modeling and Simulation for High School Teachers: Principles, Problems, and Lesson Plans	CK-12	CC-BY-NC
Motion Mountain – The Adventure of Physics	Motion Mountain	CC-BY-NC-ND
Nuclear Physics	Tilahun Tesfaye	CC-BY-SA
Open Source Physics	Open Source Physics	Custom
People’s Physics Book	James H. Dann	CC-BY-SA
People’s Physics Book Version 3 (with Videos)	CK-12	CC-BY-NC
People’s Physics Concepts	CK-12	CC-BY-NC
Physical Science Concepts for Middle School	Jean Brainard	CC-BY-NC
Physical Science for Middle School	Jean Brainard	CC-BY-NC
University Physics	Open Learning	CC-BY-NC-SA
Physics – From Stargazers to Starships	CK-12	CC-BY-NC
Physics – Intermediate	CK-12	CC-BY-NC
Physics Concepts – Intermediate	CK-12	CC-BY-NC
Physics for K-12	Sunil Kumar Singh	CC-BY
Physics Study Guide	WikiBooks	CC-BY-SA
Properties of Matter	Sisay Shewamare	CC-BY-SA
Quantum Mechanics	René Yves Rasoanaivo	CC-BY-SA
Radiation Oncology	WikiBooks	CC-BY-SA
Radioactive Waste Management	WikiBooks	CC-BY-SA
Simple Nature	Ben Crowell	CC-BY-SA
Solid State Physics	Sam Kinyera Obwoya	CC-BY-SA
Special Relativity	WikiBooks	CC-BY-SA
Statistical Physics	Sisay Shewamare	CC-BY-SA
Thermal Physics	Tilahun Tesfaye	CC-BY-SA
This Quantum World	WikiBooks	CC-BY-SA

American Government	Imothy O. Lenz, Mirya Holman	CC-BY-NC-ND
American Government	Saylor Academy	CC-BY
American Government and Politics in the Information Age	David L. Paletz, Diana Owen, Timothy E. Cook	CC-BY-NC-SA
Basic Political Concepts	Paul Delespinasse	CC-BY
Elements of Political Communication	WikiBooks	CC-BY-SA
Ethics and Public Policy	Saylor Academy	CC-BY
Global Justice	Saylor Academy	CC-BY
Human Rights in Brief	AZS Index	PD
Introduction to Comparative Politics	Saylor Academy	CC-BY
Introduction to Politics	Saylor Academy	CC-BY
Introduction to Western Political Thought	Saylor Academy	CC-BY
Nationalism, Self-determination and Succession	OpenLearn	CC-BY-NC-SA
Political Science	Boundless	CC-BY-SA
The 9/11 Commission Report	9/11 Commission	PD
The CIA World Factbook	Central Intelligence Agency	PD

Anxiety Disorders	National Institute of Mental Health	PD
Applied History of Psychology	WikiBooks	CC-BY-SA
Attention Deficit Hyperactivity Disorder	National Institute of Mental Health	PD
Biological Psychology	WikiBooks	CC-BY-SA
Bipolar Disorder	National Institute of Mental Health	PD
Challenging Ideas in Mental Health	OpenLearn	CC-BY-NC-SA
Cognitive Psychology and Cognitive Neuroscience	WikiBooks	CC-BY-SA
Depression	National Institute of Mental Health	PD
Dialectical Behavioral Therapy	WikiBooks	CC-BY-SA
Eating Disorders	National Institute of Mental Health	PD
Groups and Teamwork	OpenLearn	CC-BY-NC-SA
Handbook of Epistemology	WikiBooks	CC-BY-SA
Internet for Psychology	Charles Stangor	CC-BY-NC-SA
PSYCH101:Introduction to Psychology	Saylor Academy	CC-BY
Introduction to Psychology: Version 2.1	Charles Stangor	CC-BY-NC-SA
Introduction to Psychology	WikiBooks	CC-BY-SA
Lucid Dreaming	WikiBooks	CC-BY-SA
Men and Depression	National Institute of Mental Health	PD
Mental Health Medications	National Institute of Mental Health	PD
Noba Psychology Series	James Pennebaker	CC-BY-NC-SA
Open Source Psychology	WikiBooks	CC-BY-SA
Parapsychology	WikiBooks	CC-BY-SA
Post-Traumatic Stress Disorder	National Institute of Mental Health	PD
Principles of Social Psychology	Charles Stangor	CC-BY-NC-SA
Psychology	Boundless	CC-BY-SA
Psychology A Student Friendly Approach	Saylor Academy	Custom Copyright
Research Methods in Psychology	Paul C. Price	CC-BY-NC-SA
SL Psychology	WikiBooks	CC-BY-SA
Social Psychology	WikiBooks	CC-BY-SA
Systems Thinking and Practice	Open Learn	CC-BY-NC-SA
The Making of Individual Differences	OpenLearn	CC-BY-NC-SA
The Psychology Of Emotions, Feelings and Thoughts	Mark Pettinelli	CC-BY
Women and Depression: Discovering Hope	National Institute of Mental Health	PD

AP Environmental Science	University of California College	CC-BY
Comparing Stars	OpenLearn	CC-BY-NC-SA
Deserts: Geology and Resources	Terrence Moore	PD
Earth Science	CK-12	CC-BY-SA
Earth Science	Edward J. Tarbuck, Frederick K. Lutgens	CC-BY
Energy Conservation and Environmental Protection	Sarma V. Pisupati	CC-BY-NC-SA
Environmental Science in the 21st Century	The National Science Board	Custom
Evolution through Natural Selection	OpenLearn	CC-BY-NC-SA
Gene Manipulation in Plants	OpenLearn	CC-BY-NC-SA
Genes, Technology and Policy/The Science	WikiBooks	CC-BY-SA
Geology of the National Parks	USGS	CC-BY-NC-SA
Geothermal Energy—Clean Power from the Earth’s Heat	Wendell A. Duffield, John H. Sass	PD
American Environmental History	Dan Allosso	CC BY-SA
Life in the Palaeozoic	OpenLearn	CC-BY-SA
Life Science	CK-12	CC-BY-SA
Nature of Geographic Information	James L. Sloan II, Ryan Baxter, Wesley Stroh, Beth Fletcher King	CC-BY-NC-SA
Outline of American Geography	John Florin	PD
Own You Own Space	Linda McCarthy	CC-BY-NC-ND
Physical Geography	K. Allison, Lenkeit-Meezan	CC
Plate Tectonics	OpenLearn	CC-BY-NC-SA
An Introduction to Radioactivity	The University of Porto	CC-BY-SA
Science Appreciation: Introduction to Science Literacy	John White, Michael Dennin	custom license
Sustainable Energy – Without the Hot Air	CK-12	CC-BY-NC
The Opensource Handbook of Nanoscience and Nanotechnology	WikiBooks	CC-BY-SA
This Dynamic Earth: The Story of Plate Tectonics	U.S. Geological Survey	PD

eSource: Behavioral and Social Science Research	E-course	PD
Social Problems: Continuity and Change	University of Minnesota Libraries Publishing	CC BY-NC-SA
Introduction to Social Network Methods	Robert A. Hanneman, Mark Riddle	Custom
SOC101: Introduction to Sociology	Saylor Academy	CC-BY
Introduction to Sociology	WikiBooks	CC-BY-SA
Introduction to Sociology 2e	Heather Griffiths, Nathan Keirns, Eric Strayer, Sally Vyain	CC-BY
Living in a Globalised World	The Open University	CC-BY-NC-SA
Minority Studies: A Brief Sociological Text	Ruth Dunn	CC-BY
Negation: Essays in Critical Thinking	Herbert Marcuse	CC-BY-NC-ND
Sociology	Boundless	CC-BY-SA
Sociology of the Family	Sociology of The Family	CC-BY
Sociology: Understanding and Changing the Social World, Brief Ed.	Steve Barkan	CC-BY-NC-SA
Sociology: Understanding and Changing the Social World, Comprehensive Ed.	Steve Barkan	CC-BY-NC-SA
The Art of Community	Jono Bacon	CC-BY-NC-SA

Causal and Statistical Reasoning	Open Learning	CC-NC-BY-SA
Collaborative Statistics	Susan Dean, Barbara Illowsky	CC-BY
Concepts and Applications of Inferential Statistics	Richard Lowry	Custom
From Algorithms to Z-Scores: Probabilistic and Statistical Modeling in Computer Science	Norm Matloff	CC-BY-ND
Introduction to Probability	Charles M. Grinstead	GFDL
Introduction to Statistical Thought	Michael Lavine	CC-BY-NC-SA
Introduction to Statistics	Saylor Academy	CC-BY
Introductory Statistics	Douglas S. Shafer, Zhiyi Zhang	CC-BY-NC-SA
Introductory Statistics: Concepts, Models, and Applications	David W. Stockburger	CC-BY-NC-SA
Online Statistics: An Interactive Multimedia Course of Study	David Lane	PD
Probability and Statistics	AP Statistics Curriculum	Custom License
Probability, Statistics and Random Processes	Pishro-Nik	CC-BY-NC-ND
Quantitative Information Analysis III (subset of Collab. Stats)	Susan Dean, Barbara Illowsky	CC-BY
Statistics	WikiBooks	CC-BY-SA