This is a sigma web server written in C. It has lots of cool features like caching, compression, and being HTTPS. It also works with Internet Explorer 6, which is impressive because of how picky older browsers are. This website is served by Granice! I wrote a blog post about this.
This took about 6 months to make, starting in maybe December of 2025 and being finished in around May 2026. I took quite a long break though because I wrote a ton of code for the caching, then got so burnt out I didn't even bother testing it for months.
An open challenge to anyone reading this: Silver star if you can get it to serve a file outside of the directory it should be serving, and gold star if you can manipulate the stack or get remote code execution.