What are some alternatives?
When comparing MapKit JS and Mapbox, you can also consider the following products
Swarmly - Waze for people. See where everyone is in realtime
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
MapJam - MapJam is a web and mobile map publishing platform that allows businesses, organizations, and people to create useful, personalized maps.
QGIS - QGIS is a desktop geographic information system, or GIS.
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
ArcGIS - ArcGIS software is a data analysis, cloud-based mapping platform that allows users to customize maps and see real-time data ranging from logistics support to overall mapping analysis.