These are just the Windows apps.  I use a MacBook at home, but haven’t got around to compiling a list of utilities I use there.  Maybe some day…

Productivity tools

• Paint.Net - .Net based image manipulation package.
• 7-Zip – Archive management utility
• NotePad 2 – Fully featured text editor, with (some) syntax highlighting.
• Windows Grep – I do a lot of work with text files, and missed the Unix Grep command.  Here’s an alternative for Windows.
• Tail for Windows - Another unix utility port for Windows.
• CodeRush & Refactor! - Arguably, this should have been top of my list, but since they are paid-for software I’ll leave them languishing down here.  They get used every time I’m in Visual Studio, though.
• Snippet Compiler - Great for very small proof-of-concept testing.
• Lutz Roeder’s .Net Reflector – Not going to link to this since it is now full of advertising and other nastiness. The original is out there – check through Google.

Fun Stuff

• http://google.com/chrome- very nice web browser
• Twhirl – Twitter client.
• GMail Notifier – Taskbar notification of new GMail items.

I’m sure there are many more that I’ve missed, but I’ll add them when I remember about them.