Secure Scuttlebutt (SSB) is a P2P database and decentralized cryptographic social network.

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

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.

The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system that we have created is called Debian. An operating system is the set of basic programs and utilities that make your computer run. At the core of an operating system is the kernel. The kernel is the most fundamental program on the computer and does all the basic housekeeping and lets you start other programs. Debian GNU/Linux is one of the most popular Linux distributions for personal computers and network servers.

Drupal is a free software content management framework maintained and developed by a community of more than one million users. It is used as a back-end framework for at least 2.1% of all websites worldwide ranging from personal blogs to corporate, political, and government sites including whitehouse.gov and data.gov.uk. It is also used for knowledge management and business collaboration. More than one million websites are currently powered by Drupal, according to the statistics provided by Drupal.org.

R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S.

Skype is a freemium voice-over-IP service and instant messaging client, developed by the Microsoft Skype Division. Is a hybrid peer-to-peer and client–server system. It makes use of background processing on computers running Skype software, and this is reflected in Skype's original proposed name of Sky Peer-to-Peer.

Global Voices is an international community of bloggers who report on blogs and citizen media from around the world