Charmstone - The quicker switcher launcher for macOS
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
SwitchGlass - Customizable app switcher for Mac
Listary - Listary is a revolutionary search utility for Windows
Witch - Welcome to the world of W. i. t. c. h.
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.