QWERTY mini Pro – Why a 2-row, 16-key keyboard works better
Design essay on 2-row keyboards, but the actual app isn't the focus here.

Split-layout ergonomics on any ANSI keyboard without buying new hardware.
Typists with wrist pain, ergonomic keyboard enthusiasts
Karabiner-Elements · Colemak · Thumb-Key
LOFT is free on macOS and remaps your laptop and standard keyboard into the thumb-keyed, split-layout, ergonomic dream you've been seeking!
It positions your hands up and out in a creative way to get you all the goodies you thought you'd need some garage-built, geek-contraption for. All on a standard ANSI keyboard.
Maybe of interest is that the site's keyboard graphics are all generated HTML+CSS via Hugo partials.
Design essay on 2-row keyboards, but the actual app isn't the focus here.
Hand-wired mechanical keyboard build with a joke title targeting humans.
420g full-metal split keyboard beats Moonlander on portability.
Split-key architecture enables file previews, but closed-source code undermines security claims.
BlackBerry flick predictions + pixel-perfect retro theming; iOS keyboard market is locked.
16-key keyboard that types full QWERTY via simultaneous taps and swipes.