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Thunar vs COSMIC Files: catalog facts
Thunar	COSMIC Files
Free Free and open source as part of the Xfce project.	Free Free and open source, developed by System76.
Linux	Linux
Fast startup and low resource use Built-in bulk renamer and custom actions	Written in Rust Built for and integrated with the COSMIC desktop
Linux and Unix desktops only Single pane with fewer advanced features than orthodox file managers	Linux only Designed around COSMIC, so less suited to other desktops
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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