A WordPress backup utility that can be used by itself or with an active subscription from http://mycodetree.com.
Example of the plugin's settings menu.
After you click the "Manual Backup" button you'll be given a download link for the backup and an option to remove the backup. You will not be able to make another manual backup until you remove the existing one.
You'll see a green 'success' message if you choose to supply a valid API key from your CodeTree subscription account and the API key is correctly submitted.
If you supply an API key that is not valid, you'll see a message indicating the problem.