What are some alternatives?
When comparing Cathy and Disk Explorer Professional, you can also consider the following products
Virtual Volumes View - VVV uses a relational database to store its data.
DiskCatalogMaker - Simple, smart and fast disc management tool.
Wincatalog Light - WinCatalog Light provides basic cataloguing functionality:
Gentibus CD - The software will assist you to quickly find and categorize your files on your computer disks.
abeMeda - abeMeda is a powerful and very fast disk cataloging tool, reading metadata like EXIF, IPTC, JPG, TIFF, MP3, AAC (iTunes)
Camel Disc Catalog - Camel Disc Catalog is a DVD and CD Catalog that generates a computer database to keep track and find any disk in a snap