ReNamer - ReNamer is a very powerful and flexible file renaming tool, which offers all the standard renaming...
Darktable - darktable is an open source photography workflow application and raw developer.
Ant Renamer - Ant Renamer can rename large amounts of files and folders in few clicks.
RawTherapee - RawTherapee is a free RAW converter and digital photo processing software.
Advanced Renamer - Video files.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.