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Cyberduck vs SecureFX: catalog facts
Cyberduck	SecureFX
Free Free and open source under GPLv3. The vendor also sells a separate product, Mountain Duck…	Paid Commercial licence, with a free evaluation of every release.
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	Runs on Windows, macOS and Linux Server-to-server site synchronization
No graphical Linux application; Linux gets the CLI only Mounting remote storage as a local drive is a separate paid product, Mountain Duck	Paid after evaluation Free alternatives such as FileZilla cover basic transfers
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is 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 October 2, 2026

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