There are 1 repository under altgr-dead-keys topic.
International US QWERTY keyboard layout with AltGr (Right Alt) dead keys (Windows/Linux)
A sensible version of the US-International keyboard layout with AltGr dead keys for Windows (KLC, AHK, or PKL), Mac (Keylayout), and Linux (XKB).
EurKEY Keyboard Layouts (clone project) - by Steffen Brüntjen. These projects also contain the KLC files, which can be used to edit the keyboard layouts and to rebuild the installation files. Website : https://eurkey.steffen.bruentjen.eu/
Additional lab tests and concepts (mostly based on UltimateKEYS)
Keyboard layout for Windows - English (intl., with AltGr dead keys)
Windows port of the Linux version of "United States-English (Dvorak, Intl., with AltGr Dead Keys)"
Testing repository for UltimateKEYS
Legacy version of UltimateKEYS
An implementation of the XKB US International keyboard layout for Windows