Web Dev Tools
- IETester - WebBrowser that allows you to have the rendering and javascript engines of IE8, IE7, IE6 and IE5.5 on Vista and XP.
- FireBug - Firefox plug-in that lets you edit, debug, and monitor CSS, HTML, and JavaScript live.
- dynaTrace AJAX Edition - Diagnose and Prevent AJAX Performance Issues.
Database Tools
Packers/Unpackers/PEDumps/Debuggers
- UPX - A free, portable, extendable, high-performance executable packer for several different executable formats.
- PE Dumper
- LordPE
- OllyDbg - 32-bit assembler level analyzing debugger.
- ImmDbg - Write exploits, analyze malware, and reverse engineer binary files