Mapbox GL JS

Mapbox GL JS renders beautiful vector maps in the browser with smooth zooming, rotation, and 3D terrain. The problem is it stopped being truly open source in 2020 when v2 switched to a proprietary license requiring a Mapbox account and API key.

If you need interactive maps and are fine paying Mapbox, the developer experience and map quality are best-in-class. But if you want open source, MapLibre GL JS is the community fork of Mapbox GL v1 under BSD-2-Clause — actively maintained, growing fast, and compatible with most Mapbox styles. Leaflet is the lightweight 2D alternative. OpenLayers handles complex GIS use cases. Commercially, Google Maps is the gorilla in the room.

Mapbox's map design tools (Mapbox Studio) and satellite imagery are genuinely excellent. The rendering performance is smooth, and the API is well-documented.

The catch: you're locked into Mapbox's pricing and terms. The proprietary license means you can't self-host or modify the renderer. For most new projects, MapLibre gives you 90% of the experience with full open-source freedom. Unless you specifically need Mapbox's premium tile data or Studio tools, start with MapLibre.