ERDAS
APOLLO SOLUTION TOOLKIT allows extending the existing APOLLO web clients or creating new ones, as well as enhancing the underlying web services with the support of new data or metadata types.
Below are demonstrated all available geospatial widgets, alone or interacting with each others. All these geospatial widgets can be easily used to extend the existing APOLLO web clients.
ERDAS APOLLO SOLUTION TOOLKIT also contains detailed Javascript doc, a skeleton webapp to start a new client from scratch and a maven archetype to quickly start the development project.