• MERLOT (Multimedia Educational Resource for Learning and Online Teaching) is a leading edge, user-centered, searchable collection of peer reviewed and selected higher education, online learning materials, catalogued by registered members and a set of faculty development support services.MERLOT's vision is to be a premiere online community where faculty, staff, and students from around the world share their learning materials and pedagogy.
• CAREO: A project supported by Alberta Learning and CANARIE (Canadian Network for the Advancement of Research in Industry and Education). Its primary goal is the creation of a searchable, Web-based collection of multidisciplinary teaching materials for educators across the province and beyond.
• UWM Center for International Education: The University of Wisconsin Milwaukee Center for International Education has a collection of links to "learning objects collections," related organizations, a bibliography, etc. 
• MIT OpenCourseWare is a free publication of MIT course materials, including not just course notes but audio and visual materials too, of almost all undergraduate and graduate subjects taught at MIT.  Other OpenCourseWare sites in the U.S. include: Utah State, Notre Dame, Yale, and Tufts. 
• World Lecture Hall publishes links to pages created by faculty worldwide who are using the Web to deliver course materials in any language. 
• Federal Resources for Educational Excellence (FREE): More than 30 federal agencies formed a working group in 1997 to make hundreds of federally supported teaching and learning resources easier to find. The result of that work is the FREE Web site.
• Connexions is a place to view and share educational material made of small knowledge chunks called modules that can be organized as courses, books, reports, etc. Anyone may view or contribute.
• The Open University, UK - OpenLearn: Free educational resources; available for download, modification, and re-sharing. 
• Creative Commons: From the website: Creative Commons provides free tools that let authors, scientists, artists, and educators easily mark their creative work with the freedoms they want it to carry. You can use CC to change your copyright terms from "All Rights Reserved" to "Some Rights Reserved." We're a nonprofit organization. Everything we do - including the software we create - is free. Creative Commons also provides a library of materials that are available for free use by educators for educational endeavors. 
• Wikibooks is a Wikimedia community for creating a free library of educational textbooks that anyone can edit and use. Wikibooks began on July 10, 2003; since then Wikibooks has grown to include over 32,632 pages in a multitude of textbooks. 
• Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning.  Teachers, students, and researchers are invited to create open educational resources and collaborative learning communities. 
• Wikisource is an online library of free content publications collected and maintained by the wikisource community.

• Verizon Thinkfinity - Literacy, Education and Technology

  This resource was originally developed for use in K-12 classrooms, but also provides access to original source works and media files, including video clips of historic figures, biographies, literary works, and science and math activities, some of which are suitable as resource links for introductory college courses. The site is sponsored by the Verizon Foundation and partners include The Kennedy Center, National Geographic and the National Endowment for the Humanities. The site and partner content is fully educator reviewed, commercial-free and banner ad free.

STEM Resources

• The National Science Digital Library is the nation's online library for education and research in Science, Technology, Engineering, Mathematics. 
• The Center for the Integration of Research, Teaching, and Learning (CIRTL) promotes the development of a national faculty in science, technology, engineering, and mathematics (STEM) committed to implementing and advancing effective teaching practices for diverse student audiences as part of their professional careers.
• ExploreLearning offers a catalog of modular, interactive simulations in math and science for teachers and students in grades 6-12 and college developmental math. These simulations are called Gizmos. 
• Mathematics Software: Arizona Mathematical Software (University of Arizona) has a wide variety of free commercial quality math software that can be used with students studying algebra, calculus, and differential equations. Rather than create one massive comprehensive package that would take weeks of class time to learn, we decided to write many small packages. Each of these packages is designed to do one thing very well, and be used effectively with no, or minimal, training.

Literature/Composition

History

The History Channel provides a variety of free online resources and they will also send many free materials through the mail.

Business