Stars
A library provides spatial data and geometric algorithms
Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2
Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.
Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports.
a small build system with a focus on speed