Google Desktop
The widely-acclaimed search engine, but this time it searches your computer and it does a thorough job. After the initial indexing is completed, the software continues to index your files. You can start searching for files immediately after installing the program. After performing searches, results are returned in your browser on the Google Desktop Home Page much like the results for Google Web searches.
Freeware suitable for Windows 7/Vista/XP
Popularity: 32%