EurKEY Keyboard Layouts (clone) - by Steffen Brüntjen. These projects also contain the KLC files, extracted from the installation DLLs, which can be used to edit the keyboard layouts and to rebuild the installation files.
EurKEY - Official website : https://eurkey.steffen.bruentjen.eu/
UltimateKEYS - Websites : www.ultimatekeys.info ~ www.pieter-degroote.info
UltimateKEYS - GitHub : https://github.com/pieter-degroote/UltimateKEYS
Testing repository : https://github.com/pieter-degroote/UltimateKEYS-testing