What is .DUCK file extension?
Bookmark created by Cyberduck, an open source FTP, SFTP, and WebDAV client; contains connection settings for a specific server; opens the connection to the corresponding server when double-clicked.
Cyberduck bookmarks are saved in an XML format and contain the server address, directory path, port, protocol, and login information. They can created by selecting Bookmark ? New Bookmark within Cyberduck. Bookmarks can also be dragged to and from the Bookmarks window.
In Mac OS X, Cyberduck bookmarks are saved in the following folder:
Recent connections are also saved as bookmarks in the following folder:
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.