Light Portal is an Ajax and Java based Open Source Portal and Social Collaboration Software which can be seamless plugged in to any Java Web Application or as an independent Portal Server, see more details at official website www.lightportal.org.
GWTApp provides several features like: HTML templating and messaging at runtime without application recompiling, MetaField to auto bind and simulate annotation of RPC data fields, Strong typing in MVC, Modular structure in Maven.
Radria (Rapid Development of Rich Internet Applications) is a collection of RAD tools, 100% web based, to build web applications faster. WYSIWYG, Drag, drop, PHP and Javascript reusable, components to build Ajax and Database driven web app or mashup
A platform for web sites and services that require solid support for rich user interfaces in a fail-safe and scalable architecture. It consists of a frontend Javascript framework (also usable stand-alone) and a backend PHP/MySQL environment.