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Fileside vs Double Commander: catalog facts
Fileside	Double Commander
Paid Paid licence with a free trial.	Free Free and open source under the GPL 2.0.
Windows, macOS	Windows, macOS, Linux
Tiled multi-pane layouts saved per project Keyboard palette for jumping between folders	Two panes with a keyboard workflow built for moving files around Multi-rename tool and file comparison built in
Paid after the trial No Linux version	The interface is dated and theming is limited Plugin compatibility with Total Commander is partial
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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