...Grammar scripts describe the possible parameters for command lines and Kaptain brings up a user friendly dialog for that. Package contains front-ends for Enscript, Indent, Procmail
ReadyExec is a client-server system designed to alleviate the problem of high-startup-costing applications which are run repeatedly (e.g., in procmail) and use stdio files and argv to interact can be used within ReadyExec with very little work.