[Tools] Dave's Quick Search Taskbar Toolbar Deskbar
Although my latest favorite Open Source tool was not developed in .NET, it is really cool and has taken its place on my "essentials" list: Dave's Quick Search Taskbar Toolbar. This thingie now meets 99% of my everyday searching needs. I particularly like how I can create my own search functionality with a little XML. They even provide a utility, Dave's Quick Search Deskbar Search Wizard to take care of the most tedious parts of doing so.
Initially contributed by David Bau, DQSD now has a "healthy little online development community."