Open Source DCS (Distributed Control System). FreeDCS will give you everything you need to control your machines or process. It's being designed to be easy to use and deploy. It's composed of Logic designer, HMI designer and controller software.
Please drop me your email id at firstname.lastname@example.org . I am very much interested to be involved in this project. I am an experienced automation and control engineer and have worked on DCS, SCADA, PLC HMI etc. Regards