There are 2 repositories under metacompiler topic.
Self-hosting metacompiled Forth, bootstrapping from a few lines of C; targets Linux, Windows, ARM, RISC-V, 68000, PDP-11, asm.js.
Forth metacompiler written in Lisp, for bootstrapping
Wonyong Koh's hForth, for 8086 and Z80, together with my ARM port and a 3/4-baked metacompiler
Formally correct DSLs
A repo for my current compiler project
amrFORTH v7.1.0_beta +C8051F330 +CP2104 for gforth 0.6.2
(In Progress) The answer to "What is beauty?" and all practical software problems.
Sollux is a self hosted metacompiler. It accepts as input a grammar decorated with tiles and produces as output a compiler written in C for the object language.