1. A computer system including instructions stored on a non-transitory computer-readable storage medium, the computer system comprising: a user interface (UI) designer client that is arranged and configured to run on a client device on a client side of a network and to enable creation of UI models; a client engine that is arranged and configured to run on a client device on the client side of the network and to initiate requests for one or more of the UI models, receive the UI models in response to the requests and interpret and render the UI models at runtime; a UI runtime server client that is located on a server on a server side of the network and that is arranged and configured to interface with the client engine to receive and process the requests for the UI models from the client engine; and a repository that is located on the server on the server side of the network and that is arranged and configured to: interface with the UI designer client and store the UI models as created using the UI designer client, and interface with the UI runtime server client to deliver requested UI models to the UI runtime server client for interpretation and rendering by the client engine.