https://www.ergodox.io Tenting
https://input.club/devices/infinity-ergodox/
https://ergodox-ez.com Tenting
PCB (aliexpress) Case (aliexpres)
https://github.com/jpconstantineau/ErgoTravel
https://github.com/Pekaso/fortitude60 https://yushakobo.jp/shop/fortitude60
https://github.com/peej/for-science-keyboard
https://keeb.io/collections/frontpage/products/fourier-40-split-staggered-keyboard
https://github.com/qmk/qmk_firmware/tree/master/keyboards/georgi
https://github.com/mattdibi/redox-keyboard https://github.com/Lenbok/scad-redox-case
https://github.com/nicinabox/lets-split-guide https://www.maple-computing.com/collections/frontpage/products/lets-split-eh-leftovers http://groupbuys.mechboards.co.uk/shop/lets-split-eh-pcbs/ https://mehkee.com/products/lets-split-pcb
https://github.com/That-Canadian/MiniDox_PCB https://github.com/dotdash32/cases/tree/master/Minidox
https://github.com/MakotoKurauchi/helix https://yushakobo.jp/shop/helix-keyboard-kit/
https://github.com/foostan/crkbd/
https://www.rgbkb.net/products/zen-keyboard https://mykeyboard.eu/catalogue/category/keyboard-kits/zen-keyboard_55/
https://legonut.gitbooks.io/zen-keyboard/content/ https://legonut.gitbooks.io/zen-keyboard/content/flashing.html https://github.com/qmk/qmk_firmware/blob/master/keyboards/zen/readme.md
https://www.youtube.com/watch?v=1tDWJe_P5PQ
https://www.rgbkb.net https://www.rgbkb.net/collections/sol-2
https://github.com/GlenPickle/Chimera
https://splitkb.com/products/kyria-kit-rev1-0 https://splitkb.com/products/kyria-custom-build https://github.com/splitkb/kyria
https://candykeys.com/product/iris-pcb-kit-v-3 https://keeb.io/products/iris-keyboard-split-ergonomic-keyboard https://github.com/qmk/qmk_firmware/tree/master/keyboards/iris https://github.com/keebio/iris-case
https://keeb.io/products/levinson-lets-split-w-led-backlight https://keeb.io/products/levinson-keyboard-case-plates https://github.com/qmk/qmk_firmware/blob/master/keyboards/levinson/readme.md
https://keeb.io/products/viterbi-keyboard-pcbs-5x7-70-split-ortholinear https://github.com/qmk/qmk_firmware/blob/master/keyboards/viterbi/readme.md
https://keeb.io/collections/frontpage/products/nyquist-keyboard?variant=48309345990
https://keeb.io/products/bfo-9000-keyboard-customizable-full-size-split-ortholinear
https://github.com/reversebias/mitosis-hardware https://github.com/reversebias/mitosis
https://github.com/adereth/dactyl-keyboard
https://github.com/tshort/dactyl-keyboard
https://github.com/technomancy/atreus
https://github.com/profet23/atreus62/
https://github.com/dekonnection/atreis https://www.reddit.com/r/MechanicalKeyboards/comments/8gt4cj/photos_the_atreis_an_unsplitted_iris/
https://github.com/FSund/pteron-keyboard https://www.reddit.com/r/MechanicalKeyboards/comments/9blobs/the_pteron/
http://catboard.klava.org/ https://github.com/ibnteo/catboard https://habr.com/post/185500/
https://www.amazon.co.uk/Koolertron-Programmable-Mechanical-Keyboard-Ergonomic/dp/B076FTNXDX https://shop114100401.world.taobao.com http://xahlee.info/kbd/ly092_mini_keyboard.html
http://www.mistelkeyboard.com/keyboards/
https://www.massdrop.com/buy/ve-a http://xahlee.info/kbd/VE.A_keyboard.html
https://ultimatehackingkeyboard.com
https://www.kinesis-ergo.com/shop/advantage2/
https://www.kinesis-ergo.com/shop/freestyle-pro/
https://en.wikipedia.org/wiki/Maltron
http://xahlee.info/kbd/Cherry_Ergoplus_keyboard.html https://deskthority.net/photos-f62/cherry-mx5000-teardown-restoration-g80-5000-haade-t16661.html
https://github.com/omkbd/ErgoDash
https://github.com/kata0510/Lily58
https://www.r-go-tools.com/products/ergonomic-keyboards/r-go-split/
https://www.zsa.io/moonlander/
https://josefadamcik.github.io/SofleKeyboard/
https://github.com/tamanishi/Pinky4
https://github.com/tamanishi/Pinky3
https://github.com/swanmatch/colosseum60
https://github.com/swanmatch/MxLEDBitPCB
https://github.com/hsgw/ergoinu
You may also want to check out the Split Keyboards spreadsheet, maintained by /u/dnlglsn.
Contributions welcome!