Wikisaber is an educational portal for teachers, students and parents based on collaborative learning.

MetricsGrimoire (pronounced /ˈmetrɪksɡrɪmˈwɑr/) is a toolset to obtain data from repositories related to software development: source code management (aka version control) and issue tracking (aka bug reporting) systems, mailing lists, etc.

antiX is a fast, lightweight and easy to install linux live CD distribution based on Debian Testing for Intel-AMD x86 compatible systems. antiX offers users the "antiX Magic" in an environment suitable for old computers.

Barrapunto is a popular Spanish-language Slashdot-like website.

Menéame is a Spanish social news website based in communitary participation, made for users to discover and share content from anywhere on the Internet, by submitting links and stories and voting and commenting on submitted links and stories.

QScience is a free, open source, distributed platform tailored to support the needs of modern scholarly communities. QScience offers a free, open source, web 2.0 venue for scientists to meet and discuss about science. Display of ratings of articles, users reputation and indexes of scholarly productivity are among the supported features, however what really distinguish QScience from other analogous software and web site are the following principles: Reclaim your data. No sign-up, no central authority. Get QScience, install it, be online.

"Ensancha el Huerto" is an initiative to create a community vegetable garden in Alcorcón (Madrid, Spain).

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.

Wikiversity is a Wikimedia Foundation project that supports learning communities and the creation of and use of free learning materials, and the provision of learning activities. Wikiversity is one of many wikis used in educational contexts and initiatives that are creating free and open educational resources. Compared with other Wikimedia Foundation projects, Wikiversity never really took off.

Wikivoyage is a free web-based travel guide for travel destinations and travel topics written by volunteer authors. The project originated initially from a fork from Wikitravel in 2006. Later, after further tensions, forks and re-merging within the community, in Dicember 2012 the German association Wikivoyage e.V. and the English Wikitravel community moved all the projects operations in order to be hosted by the Wikimedia Foundation, the non-profit organization hosting several of the world's largest wiki-based communities such as Wikipedia.