I'm giving the tool 1 star because there's work behind it.
But it is not a replacement of DownloadThemAll in any imaginable sense. This tool gets messed when you have many tabs opened, it does not provide you with good filtering options, it shows a pathetic progress bar and has a very poor configuration interface. Firefox Quantum took a direction that left many good add-on modules out of service in an unrecoverable way.
