Steering grid applications is needed so that they can run several days or several weeks without restarting their computation. Existing grid middleware, such as GridRPC middleware, have room for improvement in point of steering grid applications. For instance, to manage GridRPCrelated resources remains as a complicated task for programmers. And, to monitor constraint information about future server usage is a laborious task for application users. GridRPC middleware has to assist in these tasks. In this paper, we propose a framework F-Omega for these tasks. F-Omega provides programmers common application modules for automatic management of GridRPC-related resources. For users, F-Omega provides an automatic visualization system for constraint information about future server usage. Experimental results show that the proposed features of F-Omega mitigate programmers' and users' burdens of the above-mentioned tasks.