hotswitch

Install command: 
brew install --cask hotswitch

Name: HotSwitch

Fast window switcher using a 2-stroke hotkey

https://oniatsu.github.io/HotSwitch/

/api/cask/hotswitch.json (JSON API)

Cask code on GitHub

Current version: 1.21

hotswitch has been officially discontinued upstream.
It may stop working correctly (or at all) in recent versions of macOS.

Analytics:

Installs (30 days)
hotswitch 1
Installs (90 days)
hotswitch 3
Installs (365 days)
hotswitch 19
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