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

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.

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.

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.

15Mpedia is a free enciclopedia about the 15M movement knowledfe. Similar to wikipedia, it is build by many contributors and the generated content is free (with a Creative Commons By-Sa license)

Global resource about hitchhiking written by hitchhikers. This is not about paid ride shares, this is about the real thing, traveling with no or almost no money.

Loomio is an online, collaborative decision-making tool for communities.

The World Wide Web Consortium (W3C) is an international community that develops open standards to ensure the long-term growth of the Web. On 29 August 2012 five leading global organizations jointly signed an agreement to affirm and adhere to a set of Principles in support of The Modern Paradigm for Standards; an open and collectively empowering model that will help radically improve the way people around the world develop new technologies and innovate for humanity. Learn more about OpenStand: the modern paradigm for standards.

PHP-Nuke is a content management system allowing webmasters to create community-based portals (websites), allowing users and editors to post news items (user-submitted news items are selected by editors) or other types of articles. Registered users can then comment on these articles. Modules can be added to the PHP-Nuke system allowing additional features such as an Internet forum, Calendar, News Feed, FAQs, Private Messaging and others. The site is maintained through an administration interface. PHP-Nuke is a news automated system specially designed to be used in Intranets and Internet.