The integration of a compiled and interpreted HPF gives us an opportunity to design a powerful application development environment targeted for high performance parallel and distributed systems. This Web based system follows a three-tier model. The Java front-end holds proxy objects, which can be manipulated with an interpreted Web client (a Java applet) interacting dynamically with compiled code through a tier-2 server. Although targeted for HPF back-end, the system's architecture is independent of the back-end language, and can be extended to support other high performance languages.