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.
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