A Java application/library that can generate PNG tile overlay images for Google Maps from multiple data sources. Inactive because there are better alternatives: Java - http://geotools.codehaus.org/ PHP - http://www.mapserver.org/
GPSylon is a Java moving map application that is able to display maps like in an atlas and show your position by the use of a gps device. It may track your path, load overlays (e.g. shape files), download maps from expedia servers. - The source code was moved to github!
GeoDress is a program for reverse geocoding of JPEG pictures with a simple GUI and even a command-line interface.
Pegais is a language to describe interactions between agents and avatars (users); a platform to implement multi-agents systems (MAS) with a physical world interaction (geolocalisation and GIS); Also an online identification and authentification service.
InterMap is an Internet mapping application that allows the user to combine interactive maps from distributed Internet Map Servers in a browser. InterMap supports OpenGIS WMS and ESRI-ArcIMS and can be fully integrated with the GeoNetwork Metadata portal
Liegkat-Archiv delivers ALK converters for spatial data formats (EDBS, BGRUND, SQD, DFK, HK) and coordinate systems used in German cadastral agencies before ALKIS into KML and JML. It delivers Python packages and XSL files.