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Szyszka vs KRename: catalog facts
Szyszka	KRename
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-2.0 licence.
Windows, macOS, Linux	Linux
Multiple renaming rules that can be combined Fast with large numbers of files	Regular expression support for advanced renaming Plugins read metadata from images, video and music
Development is infrequent GTK interface feels out of place outside Linux	Linux only Many options can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.