Charmstone - The quicker switcher launcher for macOS
Witch - Welcome to the world of W. i. t. c. h.
SwitchGlass - Customizable app switcher for Mac
Contexts - Switch between application windows effortlessly — with Fast Search, a better Command-Tab, a Sidebar or even a quick gesture. Free trial available.
Hyperswitch - HyperSwitch provides a compelling alternative to HyperDock for keyboard junkies. What's New
Alt-Tab Thingy - If you are not familiar with the Alt-Tab task switcher in Windows, its a keyboard short-cut...