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TagStudio vs IMatch: catalog facts
TagStudio	IMatch
Free Free and open source with no paid tier.	Paid Commercial software sold by photools.com.
Windows, macOS, Linux	Windows
Tag-based organization on top of your existing files Does not lock files into a proprietary format	Standard-compliant metadata management Catalogs RAW, video, audio, PDF and Office files
Still evolving, so features and library format may change Organizing a large collection with tags takes manual effort	Windows only Paid software
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	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 October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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