GeoExplorer is a web application, based on the GeoExt framework, for composing and publishing maps. With GeoExplorer you can quickly assemble maps from GeoServer or any OGC Web Mapping Server (WMS) and integrate with hosted maps such as Google Maps and OpenStreetMap. You can also edit map styling information, embed the maps you compose in any web page, or output the maps in PDF format.

GeoExplorer User Manual

Getting started with GeoExplorer
The GeoExplorer Workspace
Map Window, Toolbar, and Layers Panel
Using GeoExplorer
How to use GeoExplorer
GeoExplorer Licensing
GeoExplorer code and documentation licensing

Additional References