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Marta vs QSpace: catalog facts
Marta	QSpace
Free Free to download; development is supported through Patreon.	Paid Sold through the Mac App Store and as QSpace Pro; the page does not list prices.
macOS	macOS
Native Swift app for macOS Browse and edit files inside archives	12 switchable multi-pane layouts Built-in FTP, SFTP, WebDAV, SMB, S3 and cloud drive connections
macOS only Still pre-1.0 with slow release pace	macOS only App Store and Pro editions differ in features
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	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 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.