* [**Python**: _Simple Top-Down Parsing in Python_](http://effbot.org/zone/simple-top-down-parsing.htm)
* [**Python**: _How to Write a Lisp Interpreter in Python_](http://norvig.com/lispy.html)
* [**Python**: _Let’s Build A Simple Interpreter_](https://ruslanspivak.com/lsbasi-part1/)
* [**Python**: _Make Your Own Simple Interpreted Programming Language_](https://www.youtube.com/watch?v=dj9CBS3ikGA&list=PLZQftyCk7_SdoVexSmwy_tBgs7P0b97yD&index=1) [video]
* [**Racket**: _Beautiful Racket: How to make your own programming languages with Racket_](https://beautifulracket.com/)
* [**Ruby**: _A Compiler From Scratch_](https://www.destroyallsoftware.com/screencasts/catalog/a-compiler-from-scratch)
* [**Ruby**: _Markdown compiler from scratch in Ruby_](https://blog.beezwax.net/2017/07/07/writing-a-markdown-compiler/)