qTag is an MP3 tagger & browser to manage large MP3 collections, ID3v1/2 support, optimized smart tags, automatic modes for tagging of complete and incomplete albums using freedb, generate tags from file names, auto rename/move files by tags, definable grid layout with 20 columns, rollback & preview changes, print covers, export tags in excel CSV or HTML format, create playlists, MP3 player support, dynamic track coloring, nice interface, flat and tree browser mode, support forum, multi language support, an external language file editor, etc.