CleanMyMac X - Clean, protect and speed up your Mac
Droid Transfer - Save and Print your Android Phone Messages, Manage Photos, Music and other files on your Android Phone through your PC. Android Transfer Software.
Space Lens - Discover what’s taking up space on your Mac
IceCream - Free up space fast and never miss a moment again
TrashMe - Our iTunes companion will be shortly compatible with Spotify and will be available on our webstore too. Jibapps is a small French company producing applications for macOS.
Fossils - Find and clean out all your old unused files