Cyberduck

Cyberduck is a free and open-source file transfer client for macOS and Windows. It provides a graphical interface for transferring files to and from remote servers and cloud storage services, with an emphasis on ease of use and seamless integration with the operating system. The application supports drag-and-drop, a bookmarkable server list, and a transfer queue to manage operations.

The client supports a wide range of protocols and storage backends. Core transfer methods include FTP and SFTP (SSH File Transfer Protocol), as well as WebDAV. For cloud and object storage, Cyberduck can connect to services such as Amazon S3, OpenStack Swift, Backblaze B2, Google Cloud Storage, and Microsoft Azure Blob Storage. Remote locations can be mounted within the file system on supported platforms, offering a familiar file-management experience.

Key features include direct editing of remote files with local editors, synchronized browsing, and the ability to manage permissions and metadata. Cyberduck provides extensive configuration options, scripting support, and integration with external tools to extend functionality. The user interface aims to be approachable for casual users while offering advanced settings for power users and system administrators.

Development and licensing are community-driven. Since its inception in the early 2000s, Cyberduck has evolved through contributions from developers around the world and is distributed under an open-source license. The project maintains documentation and source code in public repositories, encouraging collaboration and transparency.