OpenStax offers free college textbooks for all types of students, making education accessible & affordable for everyone. Browse our list of available subjects!
Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free.
PMC is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM).
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Want to contribute to open source, but not sure where to start? This is a list of projects which have curated tasks specifically for new contributors. These are a great way to get started with a project, or to help share the load of working on open source projects.