OSGeo - QGIS is a desktop geographic information system, or GIS.
MySQL - The world's most popular open source database
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
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.
SQLite - SQLite Home Page