Ten years ago, Mapbox GL was introduced as a groundbreaking mapping library that has since revolutionized the way maps are used globally, supporting dynamic, interactive visualizations across various platforms such as smartwatches, cars, and televisions, and aiding in diverse applications from mapping Mars to assisting visually impaired individuals. Initially developed as an on-device map renderer leveraging WebGL, Mapbox GL overcame the limitations of its predecessors, such as the inability to smoothly rotate or scale maps and the high resource demands of server-side rendering, by utilizing efficient data delivery through the Mapbox Vector Tile format and the capabilities of WebGL. Over the years, the library expanded to include features like smooth zooming, text rendering, client-side polygon tessellation, and more, laying the foundation for maps used by billions today. The development process focused on optimizing rendering speed and efficiency by using advanced techniques like element buffers, vertex shaders, and seamless zooming, ensuring crisp images without scaling artifacts. Despite the initial challenges, Mapbox GL has continually evolved, integrating new features and innovations contributed by numerous experts, ultimately becoming a vital tool in the geospatial community.