Cyberduck Mountain Duck CLI

Smart Synchronization

IgnoredOnlineSelective SyncSync in ProgressOn Demand Sync

View all files on your remote storage regardless if synced to your computer. Files are synchronized to your local disk when opened to allow offline usage.

Work Offline

Select files and folders to always keep offline on your computer. Other files are downloaded and cached on demand only and otherwise do not take space on your local disk.

Background Uploads

Changes are uploaded in the background as soon as a connection is available. Status icons indicate sync progress.


Fully integrated unobtrusive interface

Runs in the status bar on macOS or the system tray on Windows with sync progress, file history and connection management. Sync options at your fingertip with context menu in Finder and File Explorer.

Context Menu


Notification badge when a file is added or updated on the server.

File Updated Notification


Share files using the context directly in Finder on macOS and Windows Explorer. Create links for others that auto expire with Amazon S3, OpenStack Swift, Microsoft Azure, Backblaze B2 and others. Mountain Duck also supports creating shares in Dropbox, Google Drive, Backblaze B2, Microsoft OneDrive and NextCloud & ownCloud deployments. Documentation


Detailed view of transfers in progress and history of recently edited files on your computer and on the server.

Documentation Version 4

History and Progress on Windows

Features for Teams

File Locking

Locking files to prevent conflicting edits from others when opening documents in Microsoft Office. Locks files on WebDAV servers when supported or alternatively using lock owner files. Documentation Version 4

File Locking


Open and revert previous versions of files in versioned Amazon S3 buckets. Preview earlier versions with Quick Look or the default editor application. Documentation Version 4


Transparent client-side encryption using Cryptomator interoperable vaults. Encryption for data at rest prevents unauthorized access regardless of the server or cloud storage infrastructure.

Cryptomator Vaults


Feature & Performance Comparison

We have run a set of performance and reliability tests which show our dedication to make Mountain Duck the best available option to mount server and cloud storage as a disk on your desktop.

Compare with NetDrive, ExpanDrive & CloudMounter


We are dedicated to make Mountain Duck work well and fast. This is what our private beta testers have been saying.

This weekend I accidentally stumbled on mounting my entire vagrant disk over FTP using Mountain Duck and it’s been jaw-dropping amazing.

Michael Weigle

Thanks so much for the application! It’s really brilliant, definitely will make web development much simpler!

Bobby Dilley

Thanks works like a charm so far!

Bram Hilgersom

All I can say is - it works and I love it, it is simple, small, unobtrusive and hassle-free.

Rok Lipnik

Ever since I started using the Mountain Duck application I have loved it.

William Andersen Jr.

The reliability and stability of the transfers keeps getting better and better. With high-speed home internet, remove storage such as Wasabi, Google Drive, etc. makes total sense. Mountain Duck allows those to appear as reliable local storage.

Michael Thwaite

Many thanks, this is a great application. The integration with the finder makes working with FTP servers a lot more seamless. I love it!

Christian Von Alten

I've been using Mountain Duck without issues for weeks now. It's massively useful.

Jason Efstathiou

You have created a great tool. I use it every day and I cannot put into words how much this has helped me with my day-to-day tasks.

Jerry Essler

For those looking to mount an IaaS virtual drive, network-drive software works best, with Mountain Duck being our top pick.

I've been using Mountain Duck without issues for weeks now. It's massively useful.

Jason Efstathiou



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