Keyboard
A computer keyboard is a peripheral input device modeled after the typewriter keyboard.
Keyboard keys (buttons) typically have a set of characters engraved or printed on them, and each press of a key typically corresponds to a single written symbol.
Layouts
Ergonomic keyboard layouts
http://xahlee.info/kbd/dvorak_and_all_keyboard_layouts.html
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Querty, Dvorak, Programmer Dvorak, Colemak, Workman, QFMLWY, Engram, Asset
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Norman, Capewell, Minimak, qwpr, Arensito
Ergodox keyboard layouts
http://xahlee.info/kbd/ergodox_keyboard_layouts.html
Miryoku
Miryoku is an ergonomic, minimal, orthogonal, and universal keyboard layout
https://github.com/manna-harbour/miryoku
https://github.com/manna-harbour/miryoku/tree/master/docs/reference
Wiki
Layouts: