Software Project Management:

http://www.mantisbt.org/ , Mantis: Open source bug tracking system, solid, functional, and easy.

http://subversion.tigris.org/ , Subversion: Open source code repository, code control. Multiplatform and feature rich.

Windows Administration:

http://ww.SysInternals.com

http://www.logparser.com/

Web Development:

FireBug, Fire Fox web troubleshooting toolkit.

NotePad++ my preffered geneal purpose text editor.

WAMP Apache, MySQL, PHP on Windows. Single install with utilities.

DOJO Toolkit, want to add some fancy DHTML features without coding much?

PocketSOAP, SOAP, XML and HTML toolit for scripting, or just a library to aid development.

cURL, a library for web scripting. VERY useful for paking perl or vbscript interact with external web interfaces.

XML-SWF Guage, I look forward to making beter loking dashboard with this.

http://www.mootools.net  The Javascript framework I’m currently using.

Desktop Apps:

7-Zip, file compresison, multiple formats, open source.

FileZilla, my FTP app of choice

KLite Codec Pack, can’t play a file? Here’s all the codecs you’ll need.

Portable Apps, an app suite that can be run from anywhere, like a USB drive.

Pure inspiration: stuff that makes you want to create.

http://www.cumulatelabs.com/cumulatedraw/index.html Visio style app online

http://eyeos.org/ open source web OS. There are others out there, but this is Open Source and apears stable.

http://freemind.sourceforge.net/wiki/index.php/Main_Page  Mind Mapping Software