The Web Developer extension adds various web developer tools to a browser.
Infragistics Developer Tools is a handy developer toolkit.
Romain Bourdon (Roms)
WAMP is a perfect development environment for a PHP web developer.
With Visual Web Developer you can create wonderful and full featured web sites.
Plastic Software, Inc.
A full, yet free, UML modeling tool for the professional developer.
A PC tool for creating themes for Series 60 Developer Platform.
A developer converter from PowerPoint presentations to Online-Flash-presentation.
LochMaster 4.0 is a developer tool for strip board projects.
DPack is designed to greatly increase developer's productivity.
The leading developer toolbox for generating and manipulating files in pdf.