Quick summary
Cyberduck is a free, open-source file transfer and cloud-storage browser that makes uploading and downloading files straightforward. Created by David V. Kocher and Yves Langisch, it functions as an FTP client with support for SFTP, FTP over TLS, and WebDAV, and can connect to many popular cloud storage services. Its straightforward interface is designed for fast file distribution across small teams, classrooms, and larger organizations.
Localization and language coverage
Supports a broad range of translations (more than 30 languages), providing accessibility for a global audience. Examples include:
- Simplified and Traditional Chinese
- English
- German
- Japanese
- Korean
- French
- Thai, Swedish, Russian, Hebrew, and others
Cloud storage and service integrations
Integrates with a wide selection of third-party cloud hosts so you can work with remote storage as if it were local. Examples of services supported:
- Google Drive
- Amazon S3
- Dropbox
- Microsoft OneDrive and Azure
- Backblaze B2
- OpenStack Swift
- DRACOON
Security, encryption, and protocol details
Cyberduck supports secure transfers and synchronization features commonly required by businesses and individuals:
- Encrypted connections via SFTP and FTP secured with SSL/TLS (AUTH TLS)
- Directory synchronization for keeping remote and local folders aligned
- Client-side encryption through Cryptomator: both file data and directory names can be encrypted before upload
- Compatibility with Mountain Duck to mount cloud and server storage as a local disk while preserving encryption options
- Transfer resume available if a connection drops
Usability and workflow features
Designed to be easy to learn and efficient to use:
- Drag-and-drop for quick transfers and integration with external text editors for on-the-fly edits
- Bookmarking, search, and history to organize and relocate files quickly
- File previews and caching for smoother browsing (Quick Look on supported platforms)
- Integration with native OS features such as Finder on macOS and system tray notifications on Windows
- Password storage and automatic discovery of available online services make repeated connections faster
- Copying a file’s URL or opening it in a browser for quick access
Known shortcomings
While versatile, Cyberduck has a few practical limitations to be aware of:
- Best used with a single active transfer at a time; multiple concurrent connections can reduce reliability
- It cannot share files directly from within the app—its role is to connect to servers and cloud storage rather than act as a file-sharing portal
- Compared with some advanced FTP clients, it lacks certain power-user features and workflows
Conclusion
Cyberduck is a friendly, multi-language client that covers many cloud providers and secure protocols, making it a solid choice for users who want a simple, GUI-driven tool. Though it may fall short of power FTP utilities in some areas, its ease of use, broad compatibility, and encryption options make it a worthwhile, cost-free option for many file transfer needs.
Technical
- Windows
- Mac
- Free