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Cyberduck vs Rclone UI: catalog facts
Cyberduck	Rclone UI
Free Free and open source under GPLv3. The vendor also sells a separate product, Mountain Duck…	Free Free and open source.
Windows, macOS, Command line	Windows, macOS, Linux
FTP, SFTP, WebDAV, SMB, S3, Swift, B2, Azure, OneDrive, Google Drive and Dropbox in one app Reads your existing OpenSSH configuration, with public key and two-factor support	Graphical front end for rclone's cloud storage support Works with S3 storage
No graphical Linux application; Linux gets the CLI only Mounting remote storage as a local drive is a separate paid product, Mountain Duck	Depends on rclone for the actual transfers Documentation lives mainly in the repository README
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 24, 2026

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