This and it's 1.0 predecessor JoomXplorer is a must for any Joomla admin/site dev, especially if you are on shared hosting. This makes accessing, editing and uploading files to templates a breeze. No need to fire up the FTP client, just login to the back-end and you're good to go.

The only thing I would wish for is role/permissions based front-end access so users could upload into a personal folder...