Comment by mourner

Thank you! I'd also like to list some of the building blocks of GL JS that remain open source and are heavily used in other open source projects:

- GeoJSON-VT (fast GeoJSON processing) https://github.com/mapbox/geojson-vt

- Earcut (triangulating polygons) https://github.com/mapbox/earcut

- Supercluster (point clustering) https://github.com/mapbox/supercluster

- vt-pbf (converting GeoJSON tiles to VT) https://github.com/mapbox/vt-pbf

- vector-tile (decoding vector tiles) https://github.com/mapbox/vector-tile-js

- pbf (fast reading/writing of protobuf) https://github.com/mapbox/pbf

- TinySDF (generating SDF from local CJK fonts) https://github.com/mapbox/tiny-sdf

- Potpack (generating sprite layouts) https://github.com/mapbox/potpack

- grid-index (spatial index for collisions/querying) https://github.com/mapbox/grid-index

- Pixelmatch (image comparison in render tests) https://github.com/mapbox/pixelmatch

- Polylabel (fitting labels into polygons) https://github.com/mapbox/polylabel