Users

Libaries:

• OpenLayers Demo
• OGR GeoJSON Driver Information
• MapFish Java implementation? https://trac.mapfish.org/trac/mapfish/ticket/73
• geojson Python Library, http://pypi.python.org/pypi/geojson/1.0
• Shapely (GeoJSON Geometries)
• GeoRuby

Servers:

• FeatureServer Example
• GeoServer
• WPServer Example
• GeoDjango
• ArcDeveloper Project Google Group
• Mapbender
• Pleiades?
• Knowhere? I Think.
• Mapufacture - Developers API
• CubeSERV WFS from CubeWerx Inc. (example)
• MapFish

Desktop Apps:

• FME
• Cadcorp SIS (screenshot)
• Arc2Earth, according to http://tinyurl.com/2oo5o8

Web Services:

• geo:truc
• FireEagle

Spatial Databases:

• PostGIS (since version 1.3.4)