- Free Curriculum Project
- Details a program that creates a complete curriculum and set of course materials that utilize GNU software, which is aimed at home students.
- Halfbakery
- Community created collection of inventions and ideas.
- Musipedia
- Open content encyclopedia of all things music related.
- Open Site
- Volunteer run open content encyclopedia.
- Open Textbook Project
- Seeks to develop open copyrighted textbooks using the free software development model.
- Openlaw
- Offers assistance and helps to developing arguments, drafting pleadings, and editing briefs.
- O'Reilly Open Books Project
- Features complete online editions of books written under various forms of open copyright.
- OSCOMAK: Open Source Community On Manufacturing Knowledge
- Provides knowledge about the previous, present and future open source-related processes, materials, and products.
- PlanetMath
- Virtual math based community offering math focused information and resources.
- Wikimedia Foundation
- Non-profit organization dedicated to encouraging the growth, development and distribution of free, multilingual content.
- Wikipedia
- Open source encyclopedia featuring community created entries and information.
- World 66
- Open source project compiling travel guides for destinations around the world.
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