Hotcold Typing: https://chrome.google.com/webstore/detail/hotcold-typing/gikgnaajhiofmngkodahgpjnpgacmhlc https://chrome.google.com/webstore/detail/hotcold-typi

Hotcold Typing: https://chrome.google.com/webstore/detail/hotcold-typing/gikgnaajhiofmngkodahgpjnpgacmhlc https://chrome.google.com/webstore/detail/hotcold-typing/gik... Learning Touch Typing with instant visual feedbacks. I initially made it for Mozilla Dev Derby, and now released as an Chrome App.