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Transnomino vs Szyszka: catalog facts
Transnomino	Szyszka
Free Free to use, with optional donations.	Free Free and open source under the MIT licence.
macOS	Windows, macOS, Linux
Regular expressions and wildcard find and replace Chain several actions with a live preview	Multiple renaming rules that can be combined Fast with large numbers of files
macOS only Current version requires macOS 14 or later	Development is infrequent GTK interface feels out of place outside Linux
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
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.