Mapbox has some really cool tech. They care a lot about rendering performance and do a lot of open-source work in the GPU vector graphics space; e.g. https://gi

Mapbox has some really cool tech. They care a lot about rendering performance and do a lot of open-source work in the GPU vector graphics space; e.g. https://github.com/mapbox/mapbox-gl-js https://github.com/mapbox/mapbox-gl-js I've always enjoyed chatting with their engineers about vector graphics stuff. :)