Spain Gamers is a digital space to share game experiences, tricks and strategies about the most popular games within the gamers community.

LocalWiki is a grassroots effort to collect, share and open the world’s local knowledge.We want anyone, anywhere to be able to learn about where they live — their local government, the history of their neighborhoods, streets, social movements, noteworthy local figures, social services, schools – every facet of life in their community. And we believe that this vast collection of local knowledge should be created by the people who know it best - individual community members working together. There are already over 70 independent LocalWiki projects in 9 countries and in 7 languages.

The P2P WikiSprint brings together activists, researchers, hackers, journalists, etc. to map and document P2P collaborative experiences

4chan is an English-language image-based bulletin board website. Users generally post anonymously, with the most recent posts appearing above the rest. 4chan is split into various boards with their own specific content and guidelines. There are boards dedicated to a variety of topics, from Japanese animation and culture to videogames, music, and photography. Registration is not required, nor is it possible (except for staff).

Wikipedia is a collaboratively edited, multilingual, free Internet encyclopedia that is supported by the non-profit Wikimedia Foundation. Volunteers worldwide collaboratively write Wikipedia's 30 million articles in 287 languages, including over 4.4 million in the English Wikipedia. Anyone who can access the site can edit almost any of its articles, which on the Internet comprise the largest and most popular general reference work, ranking sixth globally among all websites on Alexa with an estimated 365 million readers.

A collaborative discussion website. Articles are created and submitted by Kuro5hin's users and submitted to a queue for evaluation. Site members can vote for or against publishing an article and, once the article has reached a certain number of votes, it is then published to the site or deleted from the queue.The site has been described as "a free-for-all of news and opinion written by readers".

Couchsurfing is a global community of 7 million people in more than 100,000 cities who share their life, their world, their journey. Couchsurfing connects travelers with a global network of people willing to share in profound and meaningful ways, making travel a truly social experience.

EyeWire is a game to map the brain from Seung Lab at MIT. Anyone can play and you need no scientific background. Over 80,000 people from 130 countries already do. Together we are mapping the 3D structure of neurons; advancing our quest to understand ourselves.

OpenStreetMap (OSM) is a collaborative project to create a free editable map of the world. Two major driving forces behind the establishment and growth of OSM have been restrictions on use or availability of map information across much of the world and the advent of inexpensive portable satellite navigation devices.