Cyberduck Registration Key Page

: If you buy Cyberduck from the Mac App Store or Windows Store, you do not need a registration key; the license is managed by the store itself.

the file to register the application automatically. Cyberduck Registration Key

Even though the software works without paying (on the website version), obtaining a registration key is highly recommended for several reasons: : If you buy Cyberduck from the Mac

Double-click the .cyberducklicense file to register automatically. is a popular open-source FTP, SFTP, WebDAV, and

is a popular open-source FTP, SFTP, WebDAV, and cloud storage client. It is free software (licensed under the GPL). Historically, the developer offered a donation-based registration key to support the project, but using the software never required a key to unlock features—the key simply removed a donation reminder. Today, Cyberduck no longer requires or distributes registration keys; it is completely free without any nag screen.

: A single registration key is personal and can be used on multiple computers owned by the donor, but it is not intended for public sharing. App Store Alternative : If you purchase Cyberduck through the Mac App Store Microsoft Store