Compare software

RnR vs Massren: catalog facts
RnR	Massren
Free Free and open source under the MIT licence.	Free Free to use; the repository does not specify a license.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Dry run by default with collision checks Undo through operation dump files	Uses the user's existing text editor for batch renames Supports undo and dry runs
Only accepts UTF-8 valid input arguments Requires comfort with regular expressions	Windows releases are discontinued.
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 8, 2026

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