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Cyberduck vs duck: catalog facts
Cyberduck	duck
Free Free and open source under GPLv3. The vendor also sells a separate product, Mountain Duck…	Free Free to install through package managers or installers.
Windows, macOS, Command line	Windows, macOS, Linux, Command line
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	Supports FTP, SFTP, WebDAV, S3 and Swift from one tool Access to Cryptomator encrypted vaults
No graphical Linux application; Linux gets the CLI only Mounting remote storage as a local drive is a separate paid product, Mountain Duck	Command line only; use Cyberduck for a graphical interface
Downloadable app	Downloadable app
Open source	Closed 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.