Chegg Homework Help - Chegg offers free homework help specializing in math and science. Post a question on their site to solicit help from their online community. They also offer a free flashcard iPhone app.
Curriki - An online education community that shares free, high-quality curricula and education resources to teachers, students and parents around the world.
Flat World Knowledge - Flat World Knowledge offers free online textbooks. The site also offers low-cost alternative study material for students, including print-on-demand paperbacks, audio books and chapters, self-print options, and more. Instructors can modify the material for their own course.
Khan Academy – Free online library of educational videos.
OER Case Studies by Creative Commons - A listing of open education resources projects from around the world.
Open Educational Resources - A database of links to high-quality teaching and learning material online that you may freely use and reuse, without charge.
WizIQ – Provides free access to virtual classrooms where students can share resources, interact by chat, and produce their own content. Teachers pay a small fee to host a class.
Primary and Secondary Education
CK-12 FlexBooks - Customizable, free digital textbooks for primary and secondary school
International Children's Library - Provides digital stories and storytelling for a range of early readers and languages. The site has over 44,000 books, 54 languages, 62 countries, and 3 web-languages.
Professor Garfield - Read comic books or have the books read to you. Available in 5 languages and includes a self-publishing cartoon-maker application designed for pre-readers/pre-school.
The Jason Project - National Geographic science and exploration website offering free lesson plans and curriculum that uses exploration to motivate students to learn about science.
Higher Education, Libraries, and Professional Development
American Libraries Magazine – The website of the flagship magazine of the American Library Association that has free access to articles from the last two years.
Ariadne Magazine – An online magazine for information professionals, which focuses on technological developments and current digital library initiatives.
D-Lib Magazine - An online magazine focusing on digital library research and development.
Global Memory Net - A model digital library of cultural, historical, and heritage image collection of over 24,000 digital collections from over 80 countries.
International Federation of Library Associations' Building Strong Library Associations program – Offers a comprehensive training package and learning materials that can be downloaded from the website.
International Network for the Availability of Scientific Publications – Its Programme for the Enhancement of Research Information (PERii) program provides libraries with free access to a wide variety of ebooks and ejournals and has training material to help equip librarians with appropriate skills to support scholarly research and communication.
IRRT Free Links - Free professional development tools and librarianship resources for international librarians and libraries provided by the International Relations Round Table.
Library Journal – A publication that covers technology, management, policy, and other professional concerns in the library field.
MIT Open Courseware - Free lecture notes, exams, and videos from the Massachusetts Institute of Technology.
Online Courses Directory – Explore, create course lists, and track your progress through more than 500 online classes from the world’s leading universities.
TechSoup for Libraries – Articles, webinars, training resources, and more for incorporating technology into libraries. Offered software donations are only for U.S.-based libraries.
The eIFL Foundation - This organization supports the wide availability of electronic resources for library users in developing countries by helping to negotiate the creation of library consortia across multiple countries.
The Cochrane Collaboration - An evidence-based health-care database updated by health care professionals around the world.
Developing Countries Initiatives
Hinari - access to research on health
AGORA - access to global online research on agriculture
OARE - access to research on the environment
INASP - international network for the availability of science publications