SFTP client · iterate GmbH

Cyberduck

Open-source file browser for SFTP, FTP, WebDAV, SMB and many cloud stores (S3, Azure, Dropbox, Google Drive and others) on macOS and Windows, with a command-line companion (duck) and a separate paid Mountain Duck for drive mounting.

Official site

~/facts

platforms: macOSWindowsLinuxGUI app for macOS and Windows; the separate 'duck' CLI runs on Linux, macOS and Windows. Mac App Store and Windows Store builds exist.
price: FreeFree download; donation prompt after install/update is removed by a registration key for a donation of at least $10; App Store/Windows Store versions are a paid alternative (store prices not shown on the page) (seen 2026-10-20).
source: Open sourceLicence: GPL-3.0
github: iterate-ch/cyberduck 4.9k stars, seen 2026-10-20

~/features

✓ yes SFTP
? not verified SSH
? not verified Port forwarding
? not verified Cloud sync
✓ yes Scripting / API
? not verified Team sharing

✓ documented · – absent or not in its feature list · ? not verified

+ strengths

Very wide protocol and cloud coverage in one GUI
SFTP honors OpenSSH config: ProxyJump, IdentityAgent, 1Password/Bitwarden agents (docs)
GPL source on GitHub; CLI for macOS, Windows and Linux
Free to use with an optional donation key

! weak points

GUI only on macOS and Windows; no Linux desktop app
Recurring donation prompt unless a key is bought
Some SSH features (known_hosts, agent) unavailable in the Mac App Store build
Disk mounting requires the separate paid Mountain Duck

~/who it is for

best for: Mac or Windows users who move files between SFTP servers and many cloud storage services.
look elsewhere if: Users who need an interactive SSH terminal or Linux desktop client.

~/sources

Checked 2026-10-20. Prices and features change; the vendor's page is the authority.

cyberduck.io — platforms, protocols, GPL, Mountain Duck, CLI, store listings
cyberduck.io/donate — donation model, $10 key, store alternative
cyberduck.io/changelog — version 9.5.4, 25 August 2026
docs.cyberduck.io/protocols/sftp — ProxyJump, SSH agents, OpenSSH config, MAS limits
docs.cyberduck.io — CLI for Mac, Windows, Linux
github.com/iterate-ch/cyberduck — GitHub repo, GPL-3.0, stars
mountainduck.io — Mountain Duck is a separate product for macOS/Windows

Not verified

ssh left null: no interactive SSH terminal seen
tabs, split_panes, port_forwarding, x11, serial, telnet, mosh, cloud_sync (bookmark sync), team_sharing, AI/agent/MCP flags, phone_remote, mobile_app not verified (null)
Store prices and Mountain Duck price not shown on pages read
'linux' in platforms refers to the CLI only