Keyboardio Atreus

The Atreus is the most portable ergonomic keyboard available and the surprise pick at the end of this list. Designed by Jesse Vincent (founder of Best Practical, makers of RT ticketing software), it's a 44-key columnar layout that fits in a jacket pocket. At $149, it uses Kalih box switches and ships with Chrysalis for visual keymap configuration. The argument for the Atreus: it travels in a way that no other ergonomic keyboard does, meaning developers who value consistent ergonomics while traveling don't have to choose between comfort and portability. The keychord learning curve (multiple keys produce multiple outputs via layers) is steep but pays off for developers who value efficiency over familiarity.