Kepler.gl, a collaboration between Uber and Mapbox, allows for easier mapping of large-scale data. From Shan He for Uber:
Showing geospatial data in a single web interface, kepler.gl helps users quickly validate ideas and glean insights from these visualizations. Using kepler.gl, a user can drag and drop a CSV or GeoJSON file into the browser, visualize it with different map layers, explore it by filtering and aggregating it, and eventually export the final visualization as a static map or an animated video.
It plays nice with Mapbox if that’s your jam.