Mountain Duck
Mount remote storage as a disk
Macのみ対応
無料 · アプリ内購入
Mountain Duck lets you mount server and cloud storage as a disk on your desktop. With Smart Synchronization, files are synchronized to the local disk when opened to allow offline usage and changes are uploaded in the background as soon as a connection is available. Open remote files with any application and work like on a local volume. Transfer files using Finder to remote servers, fast. 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. Encryption for data at rest using Cryptomator interoperable vaults prevent unauthorized access regardless of the server or cloud storage infrastructure.
Based on the solid open source foundation of Cyberduck, all major protocols are supported to connect to just about any server you want. Including FTP, SFTP, WebDAV, Azure Cloud Storage, Amazon S3, Google Cloud Storage, Google Drive, Dropbox, Backblaze B2 & OpenStack Swift.
Standard Apple Terms of Use (EULA) from https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ apply.
さらに見る 自分の使用環境ではまともにマウントできない、という問題を抱えていましたが、サポートが対応してくれました。ブックマークの名称に日本語の文字を使用しないほうが良いようです…・サーバー側でファイルが更新された場合、一度切断/接続するまで反映されないことがある・大規模なファイルのコピーを行っていると、正しく完了しないことがあるすでに配置されているディレクトリをIDEで開きたい、みたいな用途には便利ですが、大規模なファイルの移動を行うには信頼性に難があるかと思います。
自分の使用環境ではまともにマウントできない、という問題を抱えていましたが、サポートが対応してくれました。ブックマークの名称に日本語の文字を使用しないほうが良いようです…・サーバー側でファイルが更新された場合、一度切断/接続するまで反映されないことがある・大規模なファイルのコピーを行っていると、正しく完了しないことがあるすでに配置されているディレクトリをIDEで開きたい、みたいな用途には便利ですが、大規模なファイルの移動を行うには信頼性に難があるかと思います。
ver3は相性が悪くver3.1.2から使用していますがGoogleのアカウントが変更できず複数アカウント所有している場合、切り替えができません。#新規接続ですと、既に登録しているアカウントで固定されてしまいます。ブックマークでアカウント欄の編集もできません。 - Google Driveの「Google Account Email」下記はブックマークでアカウント欄の編集ができません。#複数アカウントを所有しておらず、複数接続は検証していません。Googleと同じ現象かと考察しております。 - Dropboxの「Dropbox Account」 - OneDriveの「ユーザ名」ver2.7.2は各設定ができます。動作環境は以下のとおりです。 - MacBook Pro - MacOS Mojave(10.14.6)
ver3は相性が悪くver3.1.2から使用していますがGoogleのアカウントが変更できず複数アカウント所有している場合、切り替えができません。#新規接続ですと、既に登録しているアカウントで固定されてしまいます。ブックマークでアカウント欄の編集もできません。 - Google Driveの「Google Account Email」下記はブックマークでアカウント欄の編集ができません。#複数アカウントを所有しておらず、複数接続は検証していません。Googleと同じ現象かと考察しております。 - Dropboxの「Dropbox Account」 - OneDriveの「ユーザ名」ver2.7.2は各設定ができます。動作環境は以下のとおりです。 - MacBook Pro - MacOS Mojave(10.14.6)
• Cleartext uploads to unlocked vault with auto detect disabled in Preferences (Cryptomator) (#17893)
• Unable to lock vault (Cryptomator) (#17892)
5.2.1 3月23日
• [Bugfix] Do not preemptively save OAuth tokens with no username (Box, Dropbox, Google Drive, Google Storage, OneDrive)
• [Bugfix] Fail when reading private key for selected certificate fails (WebDAV)
• [Bugfix] Validate jumphost configuration on connect (SFTP)
• [Bugfix] Include context path in presigned URLs (S3)
• [Bugfix] Previous file versions missing in Info → Versions (Dropbox)
• [Bugfix] Update read-only placeholder file in cache (Windows)
• [Bugfix] Expired access token causes pause of sync (Dropbox)
• [Bugfix] Error syncing various package files in "Integrated" connect mode (macOS)
• [Bugfix] Must choose "Refresh" to show top level folders in "Integrated" connect mode (OneDrive, Google Drive) (macOS)
5.2.0 2月20日
• Performance improvements in “Smart Synchronization” connect mode
• Validate tokens when using AWS S3 CLI connection profile (#17690)
5.1.1 2025/12/24
• “Integrated” connect mode using File Provider API (macOS)
• Allow to search contents with Spotlight
• SMB (Server Message Block) protocol support (#5368)
• Custom versioning support to save previous file versions when overwriting (FTP, SFTP, WebDAV, OpenStack Swift)
• Allows to restore previous file versions in Info → Versions (FTP, SFTP, WebDAV, OpenStack Swift)
• Option to overwrite or rename file on sync conflict
• Activity window for monitoring of background tasks
• Resume pending large file uploads (S3, OpenStack Swift, Backblaze B2, ownCloud) (#15619)
• New application icon
• Dark and tinted application icon variants (macOS)
• New status bar icon (macOS)
• Support for Liquid Glass (macOS) (#17459=
• Norwegian (Norsk) Localization
• Rewrite protocol implementation (Azure) (#15967)
• Connect with Multi-Bucket Application Keys that grant access to a specific group of buckets within an account, including the option to limit access based on a single file prefix (B2) (#17139)
• Connect with connection profile obtaining temporary credentials from AWS Security Token Service (STS) by assuming role with optional Multi-Factor Authentication (MFA) input (S3) (#17437)
• Connect with connection profile obtaining temporary credentials from AWS Security Token Service (STS) by getting session token with optional Multi-Factor Authentication (MFA) input (S3) (#17506)
• Prompt when extensions are not running (macOS)
• Missing custom icon for connections in sidebar of Finder (macOS)
• Fix race conditions in FTP socket closure that cause intermittent errors (FTP)
• Default to read identity agent location from SSH_AUTH_SOCK environment variable with no custom configuration (SFTP)
5.1.0 2025/11/26
• Choosing Keep Offline of files may delay other actions on files and folders
• Use regular dual-stack endpoints for presigned URLs (S3)
• Share menu item not enabled (OneDrive, SharePoint) (#17082)
4.17.5 2025/06/18
• Interoperability with Bitwarden SFTP Agent (#16954)
• Read-only instead of elevated user prompt in Finder when missing permissions (macOS)
• Memory leak opening many files (macOS)
• Preset default folders when choosing custom mount or cache location (macOS)
• Prevent setting the same location for mount and cache location (macOS)
• Permission denied error adding files to Git repository (macOS)
• Finder.app freezes when working with large files (Google Drive, macOS)
• Set MIME type for files uploaded in Online connect mode (S3)
• Unnecessary elevated permission prompt for administrative privileges when copying files to read-only folder (macOS)
4.17.4 2025/05/02
• Improved throughput when transferring many files
• Ignore sync conflict on existing directory in "Smart Synchronization" connect mode
4.17.3 2025/02/28
• [Bugfix] No fallback to IPv4 address when IPv6 connect attempt fails with unreachable network (#16723)
• [Bugfix] Connect anonymously to public buckets (S3) (#16746)
4.17.2 2025/01/14
• Revert default path to show "My Drive", "Shared with me" and "Shared Drives" (Google Drive)
• Revert default path to show "My Files" and "Shared" (OneDrive)
• Missing list of buckets (Linode Object Storage) (#16659)
4.17.1 2024/12/20
• [Bugfix] Save temporary files in cache location set in Preferences → Sync
• [Bugfix] Access denied notification opening read-only file
• [Bugfix] Multipart uploads fail to buckets with '.' character in name (S3) (#16401)
• [Bugfix] Do not require GroupMember.Read.All permission (Microsoft OneDrive, SharePoint) (#16564)
• [Bugfix] Do not require storage.buckets.list permission to access bucket (Google Storage) (#16565)
• [Bugfix] Test credentials using sts:GetCallerIdentity (AWS S3) (#16565)
• [Bugfix] Files not removed in vault when deleting folder (Cryptomator) (Box, Dropbox, Google Drive, OneDrive, WebDAV, SMB) (#14101)
• [Bugfix] Access files with double-byte character in key (S3) (#13407)
4.17.0 2024/12/05
• Support for Canada West (Calgary) region (S3) #16215))
• Support for Asia Pacific (Melbourne) region (S3)
• Support for Israel (Tel Aviv) region (S3)
• Support for Asia Pacific (Kuala Lumpur) region (S3)
• Unable to enter device serial number for MFA delete (S3) (#16267)
• Change of mount location only takes effect after restart (macOS)
• Finder.app does not show file preview in QuickLook and document icon (macOS)
• Allow resume of synchronization when paused by network error in "Smart Synchronization" connect mode
4.16.3 2024/09/12
• Pause and resume sync when computer goes into sleep mode and wakes up respectively (macOS)
• Auto detect of vaults not always working (Cryptomator)
• Display notification when sync is paused in “Smart Synchronization” connect mode
• Crash when disconnecting in “Online” connect mode with no network connectivity (Windows)
4.16.2 2024/07/26
• Custom icons for protocols (Nextcloud, ownCloud)
• Detect proxy configuration change for already open connections (#13274)
• Failure retrieving previous versions of file (ownCloud)
• Missing shared folders (OneDrive Business) (#16036)
• Unable to dismiss share prompt window (macOS)
4.16.1 2024/06/28
• Support authentication using SSH certificates (SFTP) (#15183)
• Show prompt to disconnect volume when offline in "Online" connect mode
• Slow saving files in "Online" connect mode
• Failure sharing file (ownCloud) (#15855, #15839)
• NTLM authentication failures (WebDAV, SharePoint) (#15127)
4.16.0 2024/05/16
• Improvements when working on volume while offline in "Smart Synchronization" connect mode
• Error status on folder does not update
• Missing volume name suffix when connecting to bookmarks with same nickname (macOS)
• Display error when attempting to access folder with missing permissions from server in "Smart Synchronization" connect mode
• Selecting items in synchronization history menu does not reveal file in Finder (macOS)
4.15.7 2024/04/09
• Delayed file operations caused by connections per host limit
4.15.6 2024/03/14
• Mismatch with Content-MD5 for multipart uploads to vault (S3, Cryptomator) (#15704)
• Slow writing of files in Online connect mode
4.15.5 2024/03/14
• Volume shows as "/" in Finder.app (macOS)
• Allow to disconnect volume using command line (Windows)
• Improved retry and backoff strategy for API errors (Backblaze B2) (#15601)
• Support upload to buckets with object lock enabled (S3) (#15557)
• Pause synchronization in "Smart Synchronization" connect mode when offline
4.15.4 2024/03/08
• Cannot allocate memory failure mounting volume (macOS/Intel)
4.15.3 2024/01/12
• Always pause synchronization when server is not reachable in "Smart Synchronization" connect mode
• No repeated attempts connecting when server is not reachable in "Online" connect mode
• Missing digest header when commiting large file upload (Box) (#14564)
• Modification date not set in upload (Dropbox) (#15381)
• Setting modification date truncates file (SMB) (#15495)
• Select previous versions in Info → Versions (Backblaze B2)
• Failure renaming or moving files (Google Storage)
• Delayed display of folder contents
4.15.2 2024/01/11
• Failure parsing expiration from cached temporary credentials in AWS CLI configuration from AWS SSO (S3) (#15257)
• Unable to authenticate with S3 (Credentials from AWS Command Line Interface) connection profile (S3) (#15222)
• Reduce load indexing files in background in "Smart Synchronization" connect mode (S3, Google Storage, OpenStack Swift, Backblaze B2)
4.15.1 2023/11/08
• Support to login using temporary credentials from Security Token Service (STS API) using OpenID Connect (OIDC) web identity (S3) (#13804)
• Support login using OAuth 2.0 in (ownCloud) (#14876)
• Allow to create internal share (ownCloud, Nextcloud) (#14197)
• Set creation date for uploaded files (Backblaze B2, Box, Google Drive)
• Option to automatically download and install updates (macOS)
• Refresh temporary access credentials obtained from CLI configuration (S3) (#10917)
• Unable to save document from Keynote as package file in "Online" connect mode (macOS)
• Cannot connect volume with default path when server is offline in "Smart Synchronization" connect mode
• Cannot reuse nonce for GCM encryption uploading small files (Cryptomator)
4.15.0 2023/10/19
• Long running operations may cause Finder.app interrupt warning in "Online" connect mode
4.14.4 2023/09/14
• [Bugfix] Failure configuring credentials from AWS CLI setup (S3) (#14970)
• [Bugfix] Frequent broken pipe errors (FTP) (#14969)
4.14.3 2023/08/11
• Allow to open connections without copying authentication code after login (Microsoft OneDrive, Sharepoint)
• Download new folders recursively found in folder selected to keep offline in "Smart Synchronization" connect mode
• Use recommended part size from authorization response for large file uploads (Backblaze B2) (#14856)
• Slow loading folder with many folders only containing hidden files (Backblaze B2) (#14775)
• Make settings in Preferences → Connection → Timeouts apply for transfers (#14737)
• Resolve tilde prefix in default path to home directory (SFTP)
• Modification date not updated after saving document (Microsoft Word, Microsoft Excel)
• Export files creates conflict file (Adobe Premiere)
• Temporary files remain after saving document (Adobe After Effects)
• Error saving document (Pages, Numbers, Keynote) in "Online" connect mode (macOS)
4.14.2 2023/08/04
• Cleartext uploads to unlocked vault with auto detect disabled in Preferences (Cryptomator) (#17893)
• Unable to lock vault (Cryptomator) (#17892)
さらに見る バージョン5.2.1 3月23日
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