salias is a wrapper for programs that allows arguments to those programs to be aliased. For example, salias could expand "gpg -r friends --encrypt" to "gpg -r bob -r frank --encrypt". This is more useful than using simple environment variables, as other programs calling the wrapped-program don't have to worry about searching environment variables. Also, salias deals well with things needing repeating prefix options, such as with GnuPG's "-r" option (as shown in the example stated).
ReadyExec is a client-server system designed to alleviate the problem of high-startup-costing applications, such as those written in Python, which are run repeatedly (e.g., in procmail) and use stdio files, argv, environment variables, and exit codes to interact with their environment. A small 'conduit' program is used to send such process-specific information to the server, and acts as an intermediary while the 'heavy' application code runs in the server, only needing to be loaded once. A server for Python code is available.