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KPhotoAlbum vs IMatch: catalog facts
KPhotoAlbum	IMatch
Free Free KDE community software.	Paid Commercial software sold by photools.com.
Linux	Windows
Fast tagging workflow for large batches of photos Searches combine people, places and custom categories	Standard-compliant metadata management Catalogs RAW, video, audio, PDF and Office files
Organizes photos rather than editing them Tagging a large archive still takes up-front effort	Windows only Paid software
Downloadable app	Downloadable app
Open source	Closed source
License not stated	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 24, 2026	Official website Full listing and sources Checked September 24, 2026

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