BBC Open Source
   Provides information about and links to BBC open source projects.
   http://www.bbc.co.uk/opensource/

Enterprise Open Source List
   A human edited directory of professional Open Source Software intended for the IT community.
   http://www.eoslist.com

Freshmeat
   Unix and related software in all stages of development. Daily release announcements. Not restricted to open-source software.
   http://freshmeat.net

GNU/UNESCO Free Software Directory
   Lists free software packages organized and searchable by category.
   http://directory.fsf.org/

Goodie Domain Service
   Software, shareware and lots of useful hints to related information. Includes directory, search and associated links.
   http://gd.tuwien.ac.at/

Google Code
   directory of in-development open source projects
   http://code.google.com/hosting/

IBM DeveloperWorks: Open Source
   IBM's open source site includes articles, tutorials and a list of open source projects.
   http://www.ibm.com/developerworks/opensource

Java Open Source Software
   A directory of open source software focused on java.
   http://java-source.net

My Open Source
   A guide to Open Source software for the Windows platform. Lists most popular downloads and offers a review of each product.
   http://www.myopensource.org/

NASA Open Source Software
   Lists open source projects that could be essential to NASA missions. Help NASA with development of their projects - or simple enjoy them.
   http://opensource.arc.nasa.gov/

OS Reviews
   Website publishing reviews of free and open source software.
   http://www.osreviews.net

OSZone
   Listing companies and projects with individual reviews. Includes profile, blog related technologies and associated links.
   http://oszone.org/

Ohloh
   Provides comprehensive metrics and analysis on thousands of open source projects and contributors.
   http://www.ohloh.net

Open Source Alternative
   Helps you find open source alternatives to commercial software.
   http://www.osalt.com/

Open Source Scripts
   Directory of scripts in various languages (Perl, PHP, JavaScript, ...).
   http://www.opensourcescripts.com/

Open Source Software in C# (C-Sharp)
   Directory of open source software focused in C#.
   http://csharp-source.net/

Open-Source Directory
   Directory of open-source and just working programs.
   http://www.osdir.com/

Opensource Info
   A listing of distributions, applications and websites including their features. Includes forums, links and the latest news.
   http://www.opensourceinfo.org/

UNESCO Free Software Portal
   A central directory of Open Source software, designed for a worldwide audience. Includes the latest industry news.
   http://www.unesco.org/cgi-bin/webworld/portal_freesoftware/cgi/page.cgi?d=1