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Massren vs nomino: catalog facts
Massren	nomino
Free Free to use; the repository does not specify a license.	Free Free and open source under the MIT and Apache 2.0 licenses.
macOS, Linux, Command line	Windows, macOS, Linux, Command line
Uses the user's existing text editor for batch renames Supports undo and dry runs	Single self-contained binary for three operating systems Fast Rust implementation
Windows releases are discontinued.	Command line only Small project with infrequent updates
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT OR Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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