Parsec provides a JSP 1.2 tag library and an API for developing rich web applications. MVC is supported with the Page Controller pattern, where requests go to JSPs; no XML config files. Client-side form validation supported by JavaScript code generation.
Comprehensive component-based web application framework. Works with Servlet API 2.2 and JDK 1.2 or above. Tapestry reconceptualizes web application development in terms of Java objects, methods and properties, instead of URLs and query parameters.
A simple web application framework written in java using the Servlet 2.2 API. Gridiron helps to rapidly develop MVC web applications by giving a direct mapping between actions and views and supplying a Navigation class to aid in the development of views.
WIN-Servlet is a web application framework that supports a windows-like program structure. A browser has its own session-context and window-stack. Supports: component-based dialogs (FORM), input validation, standard HTML/JavaScript pages, servlet API 2.2
The mayo web application framework is a no bullsh**, lightweight framework providing only a bare-bones architecture for building real web applications with a strong focus on maintainable source code.