First of, if you're reading this: thank you! Even considering contributing to Compiler Explorer is very much appreciated! Before we go too far, an apology: Compiler Explorer grew out of a bit of hacky JavaScript into a pretty large and well-used project pretty quickly. Not all the code was originally well-written or well-tested. Please be forgiving of that, and be ready to help in improving that.
Compiler Explorer follows a Code of Conduct which aims to foster an open and welcoming environment.
This is a set of tools mainly for demangling code. Most of the interesting stuff is in the main repository.