Synfig Studio is a free and open-source 2D animation software, designed as powerful industrial-strength solution for creating film-quality animation using a vector and bitmap artwork. It eliminates the need to create animation frame-by frame, allowing you to produce 2D animation of a higher quality with fewer people and resources. Synfig Studio is available for Windows, Linux and MacOS X.

GCM is a global climate web viewer containing accesible climate information from 1901 and this is being continuously updated. It is based on open sources and open data. Developed by the University of Seville Climate Research Group

The Apache HTTP Server Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows NT.

The academic torrents network is built for researchers, by researchers. Its distributed peer-to-peer library system automatically replicates your datasets on many servers, so you don't have to worry about managing your own servers or file availability. Everyone who has data becomes a mirror for those data so the system is fault-tolerant.

The goal of Wikiloc is to help to share and discover GPS trails and waypoints from around the World in an easy way.

Stencyl is a game creation platform that allows users to create 2D video games for computers, mobile devices, and the web. The software is available for free, with select publishing options available for purchase. StencylForge is the repository for user-created (and team-created) resources. StencylForge hosts all of the following kinds of resources: graphics, sound effects, music, behaviors, example games, kits, etc.

The Steam Workshop is a central hub of player-created content and tools to publish, organize, and download that content into the video games of the Steam platform (see below). Different games will utilize the Workshop in different ways. Some games, like Team Fortress 2, allow you to create and submit new items (such as hats, weapons, badges, boots, and more) for consideration to be incorporated into the actual game.

BoardGameGeek is an online board gaming resource and community. There are reviews, ratings, images, play-aids, translations, and session reports from board game geeks across the world, as well as live discussion forums. In addition, every day nearly a hundred game trades pass through the hands of registered members, as well as transactions in the marketplace. The site is updated on a real-time basis by its large user base. BoardGameGeek was founded in January 2000 by Scott Alden and Derk Solko as a resource for the board gaming hobby.

Online platform for collaborative poetry writing based on the concept of "cadavre-excquis"

Kopfschlag is a collective and anonymous internet-based project created by an anonymous team. The online visitors are part of it by drawing, writing, erasing and sharing their artworks on Kopfschlag's virtual wall, which can be defined as something between an etch a sketch and the exquisite corpse. Everything on this site is licensed under the Creative Commons Attribution license.