Features:
- Extensive tag functions
- Flexible copy/move/rename file operations
- Intelligent tagging using smart tags
- Freedb support for online search and automatic tagging
- Ergonomic design and smart handling
- Various browsing modes
- Recursive directory scans
- Active color marking
- Preview and rollback of changes
- MP3 player support

All features are described here in details:
http://www.initware.com/qTag.html