ESRI Geoportal Server Alternatives

QGIS, formerly Quantum GIS, is a user friendly open source Geographic Information System (GIS) licensed under the GNU General Public License that runs on Linux, Unix, Mac OSX, and Windows and supports numerous vector, raster, and database formats and functionalities.

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 over the web.

What3words encodes geographic coordinates into 3 dictionary words (for example, the Statue of Liberty is located at planet.inches.most).

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

Equator is online mapping software that allows anyone to find, create and publish maps in minutes. One globe, unlimited maps.

Spatial Feature Server by MapET is an ESRI Geoservices REST Implementation and works with all ESRI Rest API's. The source of published data is the spatial extension of the major RDBMS, such Oracle, Microsoft SQLServer, MySQL, PostgreSQL.

ROGUE-JCTD.github.io : GeoSHAPE repGeoSHAPE – Geospatial capabilities for Security, Humanitarian Assistance, Partner Engagement – is designed to enable collaboration on geospatial information between mission partners in connected and disconnected operations.

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

A plus code address looks like a regular address, but with a short code where the street name and number would be. These addresses exist for any location, even for places where there are no roads.

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 data sets to help unlock the true value of any geographical location.