Alternatives to Witch

Allows switching between application windows

Keyboard-centric application and window switcher

Enable Windows-like alt-tab

Window peeking utility app

Window and tab manager

Find shortcuts for any installed application

Mouse control with the keyboard

Move and resize windows using keyboard shortcuts or snap areas

Use the Touch Bar to switch apps

Window manager

Change the behavior of the fn keys depending on the active application

Create live window previews for any application