Browser-based proxy server for customization and distribution of existing applications

A computer program product comprising a non-transitory computer readable medium having a computer readable program, wherein said computer readable program when executed on a computer causes said computer to:

• embed a browser with script execution engine in a proxy server, thereby forming a proxy browser with script execution engine;
• use said proxy browser with script execution engine to execute a client application inside said proxy server;
• connect at least one client browser to said proxy server;
• assign each client browser that connects to said proxy server an instance of said proxy browser with script execution engine;
• maintain session information for said client browser;
• and
• if said client browser makes a request to said proxy server, link said request to said instance of said proxy browser with script execution engine;
• responsive to said proxy browser in said proxy server receiving a multistage purchase process from a business system on behalf of said client browser in a client device, said proxy browser not displaying the multistage purchase process to said client browser for a user, but said proxy browser only displaying changes that are needed in fields to said client browser in which said changes are said fields that said user needs to alter from purchase to purchase;
• and
• responsive to said proxy browser determining possible interaction paths t hat said user might take through said client application as inputs and responsive to said proxy browser determining possible outputs to said inputs, translating said request into simulated mouse events and simulated keyboard events by the proxy browser;
• wherein translating said request into said simulated mouse events and said simulated keyboard events by said proxy browser comprises said proxy browser clicking a link and pressing a submit button.