Organizations

OpenForum Europe - Not-for-profit organisation helping to accelerate, broaden and strengthen the use of OSS in business and government. News and events, information about OSS, and articles.
http://www.openforumeurope.org/

Xiph.org Foundation - Non-profit corporation dedicated to protecting multimedia from control by private interests, by developing free and open protocols and software. Information about the foundation and its current projects.
http://www.xiph.org/

Open Source Automation Development Lab (OSADL) - Aims to promote and support the development of Open Source software for the automation industry. Membership fees are used to delegate the development of open source software projects such as a real time preempt patches for Linux.
http://www.osadl.org/

Software in the Public Interest, Inc. - Aims to help organizations develop and distribute open hardware and software. Includes news, details of supported projects, and membership details.
http://www.spi-inc.org/

Open Source Academy - UK government portal which aims to encourage the use of Open Source Software by local authorities. Offers opportunities for knowledge sharing and practical advice.
http://www.opensourceacademy.gov.uk/

Open Solutions Alliance - A nonprofit, vendor-neutral consortium dedicated to driving the adoption of comprehensive open source business solutions.
http://www.opensolutionsalliance.org/

Open Source Initiative - Dedicated to managing and promoting the Open Source trademark for the good of the community. Includes a definition of 'Open Source', and a list of approved licenses.
http://www.opensource.org/

The Linux Foundation - A non-profit consortium dedicated to fostering the growth of Linux, and promoting standardization and technical collaboration. Provides details of activities and working groups, a collaboration forum, and developer services.
http://www.linuxfoundation.org

Software Freedom Law Center - Provides legal representation and other law related services to protect and advance Free and Open Source software.
http://www.softwarefreedom.org/

XMPP Standards Foundation - Contact info, architectural docs and a weblog on Extensible Messaging and Presence Protocol (XMPP), an open XML communications technology.
http://xmpp.org/

Open Invention Network - An intellectual property company that was formed to promote Linux. It acquires patents and makes them available royalty-free to any company, institution or individual that agrees not to assert its patents against the Linux System.
http://www.openinventionnetwork.com/

Open Source Advisory Service - Promotes awareness and understanding of the legal, social, technical and economic issues that arise when educational institutions engage with free and open source software. News, publications, events, and FAQ.
http://www.oss-watch.ac.uk/

Jabber Software Foundation - Not-for-profit organization that oversees the general development of XMPP and maintains the Jabber Enhancement Proposals.
http://www.jabber.org/

Python Software Foundation - Non-profit organization devoted to advancing open source technology related to the Python programming language. Provides membership information, missions statement, and details of how to get involved.
http://www.python.org/psf/