Google Desktop

Some days ago I installed Google's new feature for Windows 2000/XP that builds an index of the files in your computer and displays possible results whenever you do a google search. It takes some hours after the installation in order to build the index, but the good thing is you can use your computer meanwhile. I have found the tool especially useful, and it actually addresses a desire that I have felt many times, when I wanted to find something I knew I had seen in my PC, and I would like to be able to search it as I search the Internet with Google.

Some people have expressed security fears but this is actually unfounded, since Google Desktop doesn't search anything that wasn't already there.