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F2 vs Szyszka: catalog facts
F2	Szyszka
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence.
Command line	Windows, macOS, Linux
Dry run by default shows changes before applying them Undo for any rename operation	Multiple renaming rules that can be combined Fast with large numbers of files
Command line only, with no graphical interface Regular expression renames take some learning	Development is infrequent GTK interface feels out of place outside Linux
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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