Virtual Volumes View - VVV uses a relational database to store its data.
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
Gentibus CD - The software will assist you to quickly find and categorize your files on your computer disks.
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
GWhere - GWhere is a catalog manager which allows to maintain a database of yours CDs and other removables media.
X1 Search - X1's Lightning-Fast Search Software. Premium Alternative to Windows Desktop and Outlook Search.