Cyberduck 9 adds a new custom file versioning feature for protocols with no native versioning support, such as FTP/SFTP and WebDAV.
The feature is added as a security measure to reduce the risk of file loss when editing changes. You can enable the option by default in the Editor tab in Preferences.
![](https://blog.cyberduck.io/wp-content/uploads/2024/04/270108656-83f25e32-240d-4007-839d-7aac2a6b7d0c-1024x662.png)
The versions can be previewed, deleted or restored in Edit →
Info →
Versions with the same user interface as when working with revisions from protocols with native versioning support such as a versioned bucket in S3.
Technically instead of overwriting files, previous versions are moved to a folder named .duckversions
created adjacent to the edited file. The documentation has more details.