Web Development toolbox, eh...?
You guys forgot the most important one!
FireFox + plugins:
Firebug,
Web Developer's Toolbar,
TamperData
Priceless!
And then...
- Eclipse + JadClipse plug-in(for Java development)
- TextPad/UltraEdit/TextWrangler for everything else (php, jsp, html, css)
- TortoiseSVN when necessary
- BeyondCompare for diffing files
- winscp/Cyberduck for FTP
- PuTTY for SSH
- Gimpshop at home, photoshop at work
- Oh, right and Virtual PC to test IE6 and IE7 on the same machine
I think that's about it.
(Too lazy to link to any of the apps, but google should work

!)