The Corne keyboard is a split keyboard.
It’s hard to get started but it feels good once you get used to it.
Speed after more than a month of use.
My four layers layout
traditional qwerty
number, function, and arrow keys
symbol and media keys
Keyboard light and mouse keys. The mouse keys can’t do some accurate aim, so I still need a mouse on the table.
link
keyboard: https://github.com/foostan/crkbd
typing test: https://www.keybr.com/