Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Mapbox - An open source mapping platform for custom designed maps. Our APIs and SDKs are the building blocks to integrate location into any mobile or web app.
restdb.io - restdb.io lets you create databases and REST APIs quickly. Development databases are free. Powerful web-based and mobile-friendly data management.
OSGeo - QGIS is a desktop geographic information system, or GIS.
deployd - API development tool for Web and Mobile developers.
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.