CleanMyMac X - Clean, protect and speed up your Mac
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
DaisyDisk - DaisyDisk is a disk analyzer tool for OS X that visualizes hard disk usage and allows to free up hard disk space.
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Fossils - Find and clean out all your old unused files
Listary - Listary is a revolutionary search utility for Windows