Virtual Volumes View - VVV uses a relational database to store its data.
Wincatalog Light - WinCatalog Light provides basic cataloguing functionality:
Cathy - An extremly small, very fast and easy to use media cataloging tool.
abeMeda - abeMeda is a powerful and very fast disk cataloging tool, reading metadata like EXIF, IPTC, JPG, TIFF, MP3, AAC (iTunes)
NeoFinder - NeoFinder is a powerful and very fast disk cataloging tool, reading metadata like EXIF, IPTC, JPG, RAW, TIFF, MOV, MP3, AAC
Where Is It? - WhereIsIt is a Windows application, designed to organize and maintain a catalog of your computer media collection, including CD-ROMs, audio CDs, MP3s, removable disks...