There are 2 repositories under ski-combinators topic.
Common combinators for Elixir
A simple, zero-dependency implementation of the untyped lambda calculus in Safe Rust
:bird: *cheep cheep shriek caw*
Lambda Calculus to Ski compiler and runtime.
An automated theorem discovery system
A deBruijn implementation of the untyped lambda calculus implementation focused on equivalence proofs, a self-interpreter, and a verified compiler to SK
There are some implementations of computation theory in Ruby.