1. Ruccrucc is a tiny toy C compiler in Rust.
2. NaglfarA toy web browser implemented in Rust from scratch
3. RapidusA toy JavaScript engine implemented in Rust from scratch
4. Sericum(Toy) Compiler Infrastructure influenced by LLVM written in Rust
5. FerrugoFerrugo is a JVM implementation written in Rust
6. qccqcc is a small toy C compiler
7. rcamlrcaml is an OCaml implementation in Rust
8. lit-x86Lit is a programming language designed fast & light weight with LLVM