TagSpaces is an offline, open source, document manager with tagging
A personal booru-style media tagger that can import files and tags
A free, privacy-first automatic file organizer
TagPhotos is a simple photograph description tagger for JPG files.
A New Way To Manage Documents
A Smarter Way to Tag FLAC, Vorbis, Lyrics, WMA, WavPack, and ID3 Tags
This is a simple application to bookmark/tag file/folders/websites.
It's an easy-to-use automatic audio file tagger.