With Ninite you select a bunch of applications to install on your Windows platform, and it creates your personal installer that installs all the most recent releases of your selected software. Very frequent updates, almost instant.
Eclipse IDE
A very advanced platform suitable for various forms of development.
Gliffy diagram editor
Gliffy is a free and easy to use diagram editor with export to png graphics and more. It can be run as a Chrome app.
yED graphic editor
yED is a good and free diagram editor with advanced features like auto-reordering. There is even an online version.
Notepad++ source editor
A great and free sourcecode editor. Can be expanded with several plugins. With the ftp plugin very suited for hardcoding websites!