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Open Source Web Based SCADA
Looking for a reliable open source web based SCADA software.

I want a reliable open source web based SCADA software which is platform independent, support modbus tcp communication protocol, and has a PID module or can be implemented.

I found some software programs that match my criteria but I can't choose the best match
1- Mango automation "but I found that it is not free for the commercial use" http://infiniteautomation.com/

2- rapid scada http://rapidscada.org/

3- Integraxor http://www.integraxor.com/

4- Ignition https://www.inductiveautomation.com/scada-software/

5- pvbrowser http://pvbrowser.de/pvbrowser/index.php?lang=en&menu=1

What is the current state?

which one is still open source?