A digital museum of video game levels.
OpenGameArt.org hosts a large library of user-created game assets available under various open-source licenses.
The goal of The World War II Database is to offer interesting and useful information about WW2.
DOAB is a community-driven discovery service that indexes and provides access to scholarly, peer-reviewed open access books and helps users to find trusted open access book publishers. All DOAB services are free of charge and all data is freely available.
TASVideos is a community dedicated to discussing, creating, and showcasing TASes. TASes are speedruns (or superplays) that are made with the assistance of various tools.
Browse and download high-resolution, public domain paintings, drawings, illustrations and posters.
The Multicians web site contains information about the history and features of the Multics operating system. Multics was a mainframe time-sharing operating system begun in 1965 and used until 2000. It was a major influence on subsequent computer operating systems.
Lyrics Translate is the world's largest repository of lyrics translations of songs and music videos.
Distributed Denial of Secrets archives and publishes hacked and leaked documents in the public interest.
DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, and is committed to ensuring quality content is freely available online for everyone. DOAJ is committed to keeping its services free of charge, including being indexed, and its data freely available.