» SourceForge    Resources for open-source developers and a directory of in-development open-source software.    http://sourceforge.net/

» 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://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, weblog related technologies and associated links.    http://oszone.org/

» Ohloh    Provides 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 Windows    List of free open source software to perform common functions on a Microsoft Windows platform.    http://opensourcewindows.org/

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

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

» ShareSource    Service offered for free to Open Source developers that provides easy access to SVN, bug tracking, message boards/forums, task management, site hosting, permanent file archival, full backups and daily repository snapshots.    http://sharesource.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