"DreymaR's Big Bag of Keyboard Tricks" for Windows with EPKL
International US QWERTY keyboard layout with AltGr (Right Alt) dead keys (Windows/Linux)
EurKEY Keyboard Layouts (clone project) - by Steffen Brüntjen. This repo also contains the MSKLC files, which can be used to edit the keyboard layouts and to rebuild the installation files, plus unofficial scripts for AutoHotkey.
Additional lab tests and concepts (mostly based on UltimateKEYS)
Testing repository for UltimateKEYS
Legacy version of UltimateKEYS
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