Windows only: Want to format your hard drive and reinstall Windows but you're not sure you have all the hardware driver disks to get everything working again? Free utility DriverMax analyzes XP or Vista systems for installed hardware drivers and exports them to a folder or external drive. Install DriverMax on a newly built system and import those drivers to get everything from your video card to TV tuner working again. I didn't have the chance to test DriverMax's import function on a clean system, so do image your hard drive just in case. DriverMax isn't the most modern-looking application and you have to hand over an email address to get a free registration code (Boo!). DriverMax is a free download for Windows XP and Vista.
DriverMax [via How-To Geek]