Central (State machine) Control and or front end apps

["Sid" <sid.young@xxxxxxxxx>]

G'Day all,

Does anyone know of an open source software package that provides
either a front end into a control system using seperate embedded
controllers or a back end PLC style programmable control/monitoring
software app that provides an overall supervisory style function?

If there isn't one then are there any other who are interested in
starting a project to build both a front end and a backend system?

I am a skilled C++ programmer and have been contemplating building one
myself, but if one exists with source code then it would save some
time.

Sid Young
Australia