Extensions » Modules » Form Backup
The module has changed very little since it's original version, however, the "Settings" page is only available to version 1.1.0 or later.
By and large, the module's functionality and usage speaks for itself: but there is one possibly unexpected behaviour you should know about.
Form Tools stores files directly on your server in a folder, not inside the database. The database only stores the filenames. So, when you make a backup of a form, the files are NOT copied: both forms will then refer to the same file. If you delete a file from one form it will "orphan" it from the other. In other words: the other form will still contain a reference to it, even though the file doesn't exist.
Similarly, if make a backup of a form then delete the original one and choose to delete all the uploaded files, the backed-up form will only contain references to the deleted files.