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FSearch vs Catfish: catalog facts
FSearch	Catfish
Free The open-source application is available without a license fee.	Free Free and open source as part of the Xfce project.
Linux	Linux
Instant indexed results with advanced query options	Simple, lightweight GTK interface Fast searches using locate
Results depend on which folders have been indexed.	Linux and Unix only Depends on the locate database being up to date
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-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 September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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