CleanMyMac X - Clean, protect and speed up your Mac
Hidden Bar - A ultra-light MacOS utility that helps hide menu bar icons.
Fossils - Find and clean out all your old unused files
Hocus Focus - A Mac menu bar utility that hides your inactive windows
DaisyDisk - DaisyDisk is a disk analyzer tool for OS X that visualizes hard disk usage and allows to free up hard disk space.
Pliim - One click and be ready to go up on stage and present!