A computer-implemented method and system for developing and running applications in a networked computing environment includes one aspect in which requests are sent from a client computer running a browser program and receiving the requests at a server computer. The server computer runs an application in response to the requests and constructs output information at the server computer in a format usable by the browser program, based on results generated from the application. The server computer forwards the output information to the browser program for display at the client computer. All of the necessary business logic for receiving the requests, running the application, and constructing the output information is contained within a single linkable library of executable functions. Another aspect provides for the development of customized application using business rules and logic without the need for a programmer.