Geomajas is an enterprise-ready open source GIS framework for the web. It has client-server integration for displaying and editing of geographic data.
Geomajas has integrated security and is endlessly scalable. It is compliant with OGC standards such as WMS, WFS, etc and also supports spatial databases.
It integrates with your system and provides out-of-the-box functionality through plug-ins. By leveraging GWT on the client, development is all-Java making it easier and more efficient for your team.
Watch Geomajas @ the next FOSS4G from Sept 8th to 13th in Portland.