QGIS

A fully featured, user friendly, open source Geographic Information System (GIS) with similar power to ArcGIS and MapInfo.

Free Open Source Mac OS X Windows Linux Android BSD

OpenGeo Suite

OpenGeo provides support and services around GeoServer, OpenLayers, PostGIS, GeoWebCache, and GeoExt. The OpenGeo Suite brings together the OpenGeo Architecture into a...

Free Open Source Mac OS X Windows Linux

GeoServer

The reference implementation of the Open Geospatial Consortiums WFS and WMS services, GeoServer is a full featured open source software server written in Java that allows users to query, visualize, combine, edit and publish spatial data...

Free Open Source Mac OS X Windows

Spatial Feature Server

Spatial Feature Server by MapET is an ESRI Geoservices REST Implementation and works with all ESRI Rest API's.

Commercial Windows

Mapserver

MapServer is an Open Source platform for publishing spatial data and interactive mapping applications to the web.

Free Open Source Mac OS X Windows Linux

GeoNode

GeoNode is a web-based application and platform for developing geospatial information systems (GIS) and for deploying spatial data infrastructures (SDI).

Free Open Source Mac OS X Windows Linux

what3words

Geocoding system for the simple communication of locations with a resolution of 3 m.

Free Android iPhone iPad Web

GeniusGIS

GeniusGIS is an affordable, robust, Cloud-based Small Business mapping application. Find the ideal location or territory for your business. Access a host of ready-made...

Freemium Windows Chrome OS