Version 2.0.0 Paid Upgrade

Please upgrade your license before updating. Existing customers get an upgrade discount between 40% to 100% depending on the date of purchase.

  • Support for Microsoft OneDrive
  • Create and browse encrypted vaults interopable with ​Cryptomator
  • Mount local file system to access Cryptomator vaults on your harddisk
  • Info panel available through context menu in Finder (Mac) and Explorer (Windows)
    • Change permissions of files in Info panel (FTP, SFTP)
    • Change ACLs of files in Info panel (Amazon S3, Microsoft Azure, Backblaze B2)
    • Change metadata of files in Info panel (Amazon S3, Microsoft Azure, Backblaze B2, OpenStack Swift, Google Drive, WebDAV)
    • Change CDN options of files in Info panel (Amazon CloudFront)
    • Change storage class of files in Info panel (Amazon S3)
    • Change transfer acceleration status for buckets in Info panel (Amazon S3)
    • Change default server side encryption (SSE-S3, SSE-KMS) for buckets in Info panel (Amazon S3)
    • Change lifecycle configuration for buckets in Info panel (Amazon S3)

Version 1.9.6 Jul-21-2017

  • Preserve content type when overwriting files (Google Drive)
  • Missing connect failure alert (Mac)
  • Read only option in bookmark settings not saved (Mac)

Version 1.9.5 Jun-29-2017

  • Failure loading login prompt (Mac)

Version 1.9.4 Jun-28-2017

  • Preliminary support for Microsoft OneDrive
  • Failure opening application (Mac, Windows)

Version 1.9.3 Jun-28-2017

  • Group protocols by type in bookmark window
  • Failure renaming folder (Google Drive)
  • Missing bookmark in status bar menu (Mac)
  • Failure saving PDF from Adobe Acrobat (Windows)
  • Missing context menu items clicking on empty space (Windows)
  • Long delay for context menu in Explorer to show (Windows)
  • Interoperability with xplorer2 (Windows)
  • "Favorites" item added to Finder sidebar regardless of canceled connection (Mac)
  • Always trust invalid certificate setting not remembered (Windows)
  • Unable to rename files larger than 5 GB (S3)
  • Handle expired authentication token (Backblaze B2)

Version 1.9.1 May-31-2017

  • Interoperability and performance improvements
  • Preferences Window
    • Allow to update to beta builds
    • Toggle automatic software update
    • Toggle use of system proxy settings
    • Toggle login item (Mac)
    • Toggle use of login keychain for passwords
    • Set default bucket location (Amazon S3)
    • Set default storage class (Amazon S3)
    • Set default server side encryption (Amazon S3)
  • Repeated login prompt (2-Factor Authentication SFTP)
  • Invalid references to previously mounted volumes in Finder sidebar favourites (Mac)

Version 1.9.0 Apr-18-2017

  • Support for Backblaze B2
  • Trashed files included in directory listing (Google Drive)
  • Interoperability with PROPFIND for listing folders (WebDAV)

Version 1.8.3 Apr-03-2017

  • Revert disabled update check (Mac)
  • Fix repeated error alerts

Version 1.8.2 Apr-03-2017

  • Many empty folders in temporary file location
  • Application crash after opening many folders on mounted volume

Version 1.8.1 Mar-14-2017

  • First two bookmark items missing in menu (Mac)

Version 1.8.0 Mar-14-2017

  • Support transfer acceleration (S3)
  • Display files in "Shared with me" folder (Google Drive)
  • Fix registration of login item (Mac)
  • NTLM authentication failure for uploads (Sharepoint)
  • Selected client certificate cleared from bookmark after opening connection
  • Activity window of current network tasks (Mac)
  • Cannot select SSH private key to bookmark (Windows)
  • Drastically reduced memory usage (Mac)
  • Authentication failure when using PAM (iRODS)
  • Editor freezes when saving file (Windows)
  • Open taskbar menu with keyboard (Windows)

Version 1.7.2 Feb-16-2017

  • Fix Updater crash (Windows)

Version 1.7.1 Feb-14-2017

  • Missing context menu items in Finder Extension (Mac)
  • Faster display of directory listings (Google Drive)
  • Fix moving folders (Google Drive)
  • Run with multiple users on Terminal Server (Windows)

Version 1.7.0 Feb-07-2017

  • New user interface based on the Windows Presentation Foundation (Windows)
  • Improved connection management using single SSH connection for concurrently executing tasks (SFTP)
  • Improved connection management using single shared connection pool for concurrently executing tasks (WebDAV, S3, OpenStack Swift, Google Drive, Azure, Dropbox)
  • Choose certificate in bookmark panel for mutual authentication with TLS (WebDAV)
  • Choose SSH private key from list in bookmark panel and login prompt (SFTP)
  • Choose region when creating new container (S3)
  • Choose region when creating new container (OpenStack Swift)
  • Fix failures copying files (iRODS)
  • Ignore failures copying .DS_Store files (Dropbox)
  • Fix moving folders (Google Drive)
  • Custom drive letter setting disregarded (Windows)

Version 1.6.3 Nov-14-2016

  • Fixed directory listing inconsistency while editing file
  • Fixed failure assigning drive letter (Windows)

Version 1.6.2 Nov-04-2016

  • Failure requesting expired trial license (Windows)
  • Support OpenSSH unencrypted private key format for ed25519 keys (SFTP)
  • Allow execution of programs on mounted volume (Mac)
  • Timeout error copying files (Azure Blob Storage)
  • Ignore failures copying .DS_Store files (Dropbox)
  • Lookup of password for encrypted private key in keychain (SFTP)

Version 1.6.1 Oct-26-2016

  • All embedded assemblies are cryptographically signed (Windows)
  • Paginate directory listings (Dropbox)
  • Working with GIT repositories on mounted volumes

Version 1.6.0 Oct-20-2016

  • Support for Dropbox
  • Support transfer acceleration (S3)
  • Allow to set application the default system wide protocol handler for FTP and SFTP URLs
  • Provide URL references to Google Docs documents in browser (Google Drive)
  • Bookmark importer for NetDrive 2 (Windows)

Version 1.5.8 Oct-07-2016

  • Remote host closed connection during handshake (Google Drive)
  • Free space reported as 0B for volume (ownCloud, Nextcloud)
  • Add bookmark from context menu for selected folder

Version 1.5.7 Sep-08-2016

  • Directories displayed as empty files (Windows)
  • Crash importing bookmarks from ExpanDrive (Windows)

Version 1.5.5 Sep-07-2016

  • Saving files from Atom Editor
  • Saving files from Emacs Editor

Version 1.5.4 Aug-30-2016

  • Cleanup temporary files on application exit
  • Saving files from Adobe Photoshop
  • Saving files from Adobe Illustrator

Version 1.5.3 Aug-24-2016

  • Prompt to insert Smart Card when connecting to TLS secured site (Windows)
  • Interoperability with Minio (S3)
  • Repeated prompt to select private key for authentication (App Store) (SFTP)
  • Repeated prompt for changed host key fingerprint (SFTP)
  • Fix context menu item for root folder of mounted volume
  • Set minimum system requirement for Finder Extension to 10.11

Version 1.5.0 Aug-17-2016

  • Much improved reliablity with large file transfers (Mac)
  • Extension for Finder (Mac)
  • Extension for File Explorer (Windows)
  • Context menu in Finder and File Explorer to copy & open URLs for selected files
  • Context menu in Finder and File Explorer to open PuTTY terminal for selected directory (SFTP)
  • Context menu in to refresh folder (Mac Finder Extension)
  • Open and save files from Microsoft Word (Mac)
  • Open and save files from Microsoft Excel (Mac)
  • Open and save files from Microsoft Powerpoint (Mac)
  • Operation timed out error message attempting to mount SFTP volume (Mac)
  • Interoperability with Minio Cloud Storage (S3)
  • Interoperability with Carbon Copy Cloner (Mac)

Version 1.4.8 Jul-22-2016

  • Connection failure to OpenStack Swift (Mac)

Version 1.4.7 Jul-22-2016

  • Fix partial directory listings
  • Too many open connections for read and write operations

Version 1.4.6 Jul-26-2016

  • Available space on mounted disk (Windows)
  • Allow silent application update in background (Mac)

Version 1.4.5 Jul-04-2016

  • Interoperability with nginx (WebDAV)
  • Interoperability with Atlassian Confluence (WebDAV)
  • Wrong target for symbolic links (Mac)
  • Fix automount with multiple connections after restart (Windows)

Version 1.4.4 Jun-27-2016

  • Concurrency for drive letter assignment on restart (Windows)
  • Fixed icons in bookmark menu (Windows)
  • Signed application executable (Windows)
  • Error importing bookmarks from third party applications (Windows)
  • Fixed potential endless retry on connection failures
  • Workaround failure reading quota (WebDAV)

Version 1.4.3 Jun-21-2016

  • Retain ACLs when overwriting files (S3)
  • Display correct disk usage (SFTP, OpenStack Swift, WebDAV)

Version 1.4.2 Jun-08-2016

  • Support authenticating with multiple accounts (Google Drive)

Version 1.4.1 Jun-06-2016

  • Receipt Validation in Mac App Store (Mac)

Version 1.4.0 Jun-03-2016

  • Support for Google Drive
  • Add option to mount volume as read-only filesystem
  • Allow selection of PuTTY installation location (Windows)
  • Unable to negotiate acceptable set of security parameters (WebDAV)
  • Interoperability with Atlassian Confluence (WebDAV)
  • Interoperability with Oracle Cloud (OpenStack Swift)
  • Improved connection management for interoperability with servers limiting the number of connections (FTP)
  • Support for hubiC (OVH) (OpenStack Swift)

Version 1.3.2 Apr-27-2016

  • Ignore failures when updating modification date fails (Windows)

Version 1.3.1 Apr-22-2016

  • Fix authentication using NTLM (Sharepoint, WebDAV)
  • Fix connections with IPv6
  • Retry transfer for 421 error reply from server with a delay (FTP)
  • Option to sort bookmarks in menu

Version 1.2.2 Mar-23-2016

  • Disable updater when missing admin privilege (Windows)
  • Certificate trust verification failure for four level domains (WebDAV)

Version 1.2.1 Mar-01-2016

  • Fix use of unlimited strength cryptography for strong ciphers (SFTP) (#9325)

Version 1.2 Feb-29-2016

  • Always set mountpoint to security group container application support directory (Mac)
  • Write updated timestamps on server (Windows)
  • Fix performance issue reading partial files (WebDAV)

Version 1.1 Feb-17-2016

  • Set hidden attribute for files with a leading dot (Windows)
  • Write updated permissions on server (Mac)
  • Write updated timestamps on server (Mac)
  • Allow disconnect when filesystem is busy
  • Option to install trial key for unlimited use for two weeks

Version 1.0 Jan-28-2016

We are excited to announce the release of Mountain Duck. Based on the solid open source foundation of Cyberduck, Mountain Duck allows to mount remote volumes in Finder on OS X and File Explorer on Windows. Access remote files just like on a local disk and edit them with your preferred applications.

All major protocols are supported to connect to just about any server or cloud storage including WebDAV, Amazon S3, Microsoft Azure, OpenStack Swift, FTP and SFTP.

A minimalistic user interface in the system status bar allows to quickly mount remove volumes. Bookmarks are shared with Cyberduck if installed.

Contrary to other solutions, installation on OS X requires no adminstrator privileges and zero system extensions.

Mountain Duck is available for purchase for Mac and Windows from and the Mac App Store.

  • Add "Reload in Finder" menu item for bookmark to refresh folder contents
  • Add crash reporter
  • Consume less system resources with shared thread pool
  • Fix performance issue listing large folder contents
  • Fix external file modification warning when saving from some applications
  • Enable iRODS protocol support
  • Mount volumes in /Volumes when not running in sandboxed environment
  • Fix case sensitivity for filenames
  • Enable SSH keep-alive requests
  • Local cache for reads of files open for write
  • Prevent sleep while transfer is in progress
  • Incremental directory listings to avoid blocking Finder
  • Better performance reading and writing files
  • Writing extended attributes for files
  • Fix overwriting file in directory not previously listed
  • Write symbolic links (SFTP)
  • Update check when opening application and with periodic interval
  • Always remove sidebar favorite items on application quit
  • Add mounted volumes to favourites in sidebar
  • Fix failure with editors truncating file before write
  • "Connect" Button in bookmark window
  • "Delete" Button in bookmark window
  • Fix save from applications that use a temporary file
  • Change mount directory to use nickname of bookmark
  • Change mountpoint to security application group directory
  • Fixes for partial read and writes
  • Check for updates on application launch
  • Connection timeouts when closing streams (FTP)
  • Errors in when uploading files
  • Option to disconnect and unmount volumes from error alert when connectivity is no longer available
  • Notifications on mount and unmount
  • Error choosing “Show in Explorer”