Baltic Environmental Atlas - Interactive environmental maps over the Baltic Sea region. The themes, such as population density and landuse, relate to human impact on the environment in the region. It uses standard user authentication techniques and logs all data access activity. You can add point data to it. Made for map navigation, geocoding, and route planning.
All source code is available.
GeoTools - An Open Source Java GIS toolkit. Supports the shapefile format but support for others, including GML is in development. MapObjects Internet Map Server - With ESRI's MapObjects IMS you can download and distribute both vector and raster data over the Internet. MapX - MapX is a tool from MapInfo for application developers. It offers a way to embed mapping functionality into new and existing applications.