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clrmamepro vs Igir: catalog facts
clrmamepro	Igir
Free Free to download and use.	Free Free and open source under the GPL.
Windows	Windows, macOS, Linux, Command line
Decades of refinement in auditing and rebuilding ROM sets Handles MAME merged and split set conventions correctly	One command sorts and filters a whole collection with no setup Output presets for RetroArch, MiSTer and flash carts
The interface is dense and assumes you understand DAT conventions Windows focused, closed source	Command line only Requires Node.js
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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