The Protomaps mapping system, from bottom to top:
Use Minutely Extracts to download up-to-the minute raw OpenStreetMap data.
OSM Express is the open source library that powers minutely extracts.
The Web Map API also works with the MapboxGL JS rendering library, which has its own ecosystem of plugins.
protomaps2d is a experimental WebAssembly-based renderer for map tiles. It's not recommended for production use right now.