IGRE Tools

Commercial:

AutoDesk, Caliper, ESRI, MapInfo, MapPoint, Integraph

Open Source:

Grass, MapServer, GeoTools, PostGIS

Databases:

MS SQL, MySQL, Oracle Spatial, PostgreSQL, Geodatabase

Languages:

.NET, PHP, C#, C++, Java, Silverlight, Flash

Shared Libraries:

GDAL/OGR, PROJ4, GEOS