Wikisigns is an open platform to create and share free sign language dictionaries of the world. The content of the dictionaries is made collaboratively by volunteers.

Open Food Facts is a collaborative, free and open database of food products from around the world.

Citizen media community for Spain and Latam countries. Anybody can participate and publish its own nrews and articles.

The Independent Media Center, also known as Indymedia, was the first open publishing platform in the world. Indymedia uses an open publishing and democratic media process that allows anybody to contribute. It originated during the Seattle anti-WTO protests worldwide in 1999 and remains closely associated with the global justice movement, which criticizes neo-liberalism and its associated institutions.

Wikidata is a free knowledge base that can be read and edited by humans and machines alike. It is for data what Wikimedia Commons is for media files: it centralizes access to and management of structured data, such as interwiki references and statistical information. Wikidata contains data in every language supported by the MediaWiki software. Wikidata is a project of the Wikimedia Foundation: a free, collaborative, multilingual, secondary database, collecting structured data to provide support for Wikipedia, Wikimedia Commons, the other Wikimedia projects, and well beyond that.

Rate Your Music (or RYM) is an online collaborative metadata database of musical and non-musical releases and films which can be cataloged, rated and reviewed by users. In RYM users rate and catalog releases, as well as write reviews, create lists and add artists and releases to the database.

Waze is a GPS-based geographical navigation application program for smartphones with GPS support and display screens which provides turn-by-turn information and user-submitted travel times and route details, downloading location-dependent information over the mobile telephone network.

Platform of communication and contemporary thought in Galician. Proxecto Derriba wants to be a unique community. Singular impulse because it takes a here and a now concrete, despite feeling the need to be open to anything that might happen in other places and contexts. Community headless because it is generated from the set of those who share non-membership.

Duolingo is a language-learning and translation platform. It is also used as a crowdsourcing for web pages and documents translation.

OpenSubtitles.org offers direct downloads of subtitles written down by users.