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Double Commander vs QSpace: catalog facts
Double Commander	QSpace
Free Free and open source under the GPL 2.0.	Paid Sold through the Mac App Store and as QSpace Pro; the page does not list prices.
Windows, macOS, Linux	macOS
Two panes with a keyboard workflow built for moving files around Multi-rename tool and file comparison built in	12 switchable multi-pane layouts Built-in FTP, SFTP, WebDAV, SMB, S3 and cloud drive connections
The interface is dated and theming is limited Plugin compatibility with Total Commander is partial	macOS only App Store and Pro editions differ in features
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 24, 2026

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