Apps with 'Automatic file renaming' feature
TagSpaces is an open source personal data manager.It helps you organize and browse your files on every platform.Cross-platform file tagging and file finding
MediaMonkey is a music player and a music library manager with support for 50,000+ files and many features for organizing, tagging, converting and burning your music.
FileBot is the ultimate tool for organizing and renaming your movies, tv shows or anime, and music well as downloading subtitles and artwork. It's smart and just works.
JabRef is an open source bibliography reference manager. The native file format used by JabRef is BibTeX, the standard LaTeX bibliography format.
allTags is a free, tag based file management application. It was designed to speed up file handling even in very large file sets.
A batch rename utility for the Mac. Rename many files at once, simple, powerful... and it's free.
TunePat Spotify Converter is specially designed for converting Spotify songs to MP3/AAC/WAV/FLAC.