I was looking through source forge today and did a search for geotools:
GeoTools, the java GIS toolkit
GeoTools is *the* open source java GIS toolkit. Used for OGC based projects via GeoAPI interfaces. Includes two great SLD based renderers, raster access and reprojection. Plugns fo Shapefile, ArcGrid, ArcSDE, Postgis, OracleSpatial, MySQL and many more.
Experimental GIS tools in Java
Experimental utilities in Java for geographic information and remote sensing in environmental science. Seagis is built on top of Geotools 2, which is an OpenGIS implementation. Seagis classes moves to Geotools 2 when (and if) they become mature enough.
GISONE
GISONE is an Open J2EE Spatial Framework (OJSF) for building spatially enabled Web applications. The software builds upon popular OpenSource Standards like OpenGIS and libraries like GeoTools, Struts , JBOSS and others.
Things to note:
a) GeoServer did not appear
b) what is GISONE?
I am CCing the contact person with this email, perhaps they would like to play with GeoServr?
Jody