Here you'll find a listing of free and/or open source software applications and systems that are useful. Please report any broken links.
Mozilla's Firefox browser, with countless extensions and themes. Updated frequently.>
Mozilla's Thunderbird email client.
Excellent free anti-virus protection for your personal PC.
Free version of their firewall product.
CygWin is a Linux-like environment for Windows. If you're a Linux user that can't stand using Windoze, this is for you.
GNU's image manipulation tool, It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.
Gaim/Pidgin is a multi-protocol instant messaging (IM) client for Linux, BSD, MacOS X, and Windows. It is compatible with AIM and ICQ (Oscar protocol), MSN Messenger, Yahoo!, IRC, Jabber, Gadu-Gadu, SILC, GroupWise Messenger, and Zephyr networks.
An all-in-one web server with Apache, PHP 5, and MySQL. Easy installation of everything you need to run your personal server on Windows.