A Quake 2 map renderer written in Julia.
An elegant visualization of how Bezier curves work.
The Manhattan street grid, extended to all points in the world.
It turns out that reading and writing to files is complicated.
A tiny C compiler written in OCaml.
A multiplayer Game of Life.
If you've never looked at the NYC subway map and thought "mmm pasta," now you can.
A Lisp written in Awk. Written and posted to Usenet in 1994. Updated in 2001 with garbage collection. The repository contains a bonus Lisp written in Perl.