We have a collection of Unix scripts (and/or Python modules) that each perform a long running task. I would like to provide a web interface for them that does the following:

Asks for relevant data to pass into scripts.
Allows for starting/stopping/killing them.
Allows for monitoring the progress and/or other information provided by the scripts.
Possibly some kind of logging (although the scripts already do logging).

I do know how to write a server that does this (e.g. by using Python's built-in HTTP server/JSON), but doing this properly is non-trivial and I do not want to reinvent the wheel.
Are there any existing solutions that allow for maintaining asynchronous server-side tasks?
Django is great for writing web applications, and the subprocess module (subprocess.Popen en .communicate()) is great for executing shell scripts. You can give it a stdin,stdout and stderr stream for communication if you want.
Executing server-side Unix scripts asynchronously