Mapbox GL JS is a JavaScript library for creating interactive and customizable web maps with vector tiles, geographic data, and real-time rendering. It uses WebGL to display smooth and fast 2D and 3D map visualizations with powerful data-driven styling capabilities.
OpenLayers is a powerful JavaScript library that enables developers to embed interactive maps and geospatial data into web applications. It provides various tools and functionalities that facilitate the creation of visually appealing and responsive map interfaces with support for various mapping and data formats.