tananaev/maplibre-gl-js

MapLibre GL JS lets you put fast, interactive maps on your website or web app. Instead of sending users to Google Maps or paying for a commercial mapping service, you can display your own maps with custom styling, 3D terrain, heatmaps, and other visual layers, all within your own pages. Under the hood, the library uses your computer's graphics processor to render "vector tiles", small chunks of map data, directly in the browser. This makes panning and zooming feel smooth and responsive. To use it, you add a script and stylesheet to your page, then point the library at a map style file that defines what the map looks like. From there, you can control the starting position, zoom level, and add data layers like population density or building footprints. This is useful for founders or product teams building apps that need custom maps: a real estate platform showing property boundaries, a fitness app plotting routes, an analytics dashboard visualizing geographic data, or a travel site highlighting points of interest. It works in plain HTML and JavaScript, and there are official bindings for React and Angular for teams using those frameworks. The project has an interesting backstory. It started as a fork of Mapbox GL JS after Mapbox switched its license away from open source in late 2020. The early versions were designed as a drop-in replacement for the old open-source Mapbox library, but the project has since grown into its own thing with new features and direction. It's backed by major sponsors including AWS and Meta, and operates under a permissive BSD license, meaning you can use it freely in commercial products without licensing fees. The maintainers are careful about keeping the codebase clean, they explicitly warn against copying code from the newer, non-open-source versions of Mapbox, which would threaten the project's legal standing. There's also an active community with bounties offered for certain development tasks.