There is an awesome article that goes over how one program can be written in different languages from the most abstract level of Math to Haskell to C to Assembly to actual machine code.
- Awesome programming languages
- Tour de Babel - Funny de tour of programming languages.
- Progamming Language Theory
- Conal Elliott - Teaching New Tricks to Old Programs (2017)
- Awesome static analysis - Curated list of static analysis tools, linters and code quality checkers for various programming languages.
- Lists of most popular repositories for most favoured programming languages