Directories

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

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

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

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

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

Google Code - Directory of in-development open source projects.
code.google.com/hosting/

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

Java Open Source Software - A directory of open source software focused on java.
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.
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.
opensource.arc.nasa.gov/

Ohloh - Provides metrics and analysis on thousands of open source projects and contributors.
www.ohloh.net

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

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

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

Open Source Windows - List of free open source software to perform common functions on a Microsoft Windows platform.
opensourcewindows.org/

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

Opensourceinfo - A listing of distributions, applications and websites including their features. Includes forums, links and the latest news.
www.opensourceinfo.org/

OS Reviews - Website publishing reviews of free and open source software.
www.osreviews.net

OSZone - Listing companies and projects with individual reviews. Includes profile, weblog related technologies and associated links.
oszone.org/

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