Compare software

duck vs LFTP: catalog facts
duck	LFTP
Free Free to install through package managers or installers.	Free Free software distributed under the GNU GPL.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Supports FTP, SFTP, WebDAV, S3 and Swift from one tool Access to Cryptomator encrypted vaults	Built-in mirror command for syncing directory trees Parallel transfers and background jobs
Command line only; use Cyberduck for a graphical interface	Command line only, with no graphical interface Maintainer has limited time and releases are rare
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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