RFScada 4.6 was available as a free download on our software library. The actual developer of the software is Data Delivery Devices LLC. The following version: 4.6 was the most frequently downloaded one by the program users. The RFScada installer is commonly called RFScada.exe. RFScada lies within Education Tools, more precisely Science Tools.
From the developer:
Data Delivery Devices has developed control software based on Azeotechs DAQFactory product. This provides SCADA capability for RFScada plus other brands of hardware, and provides very comprehensive features that are common to many oilfield, rural water, municipality, winery, WWTP and other industrial uses.
You may want to check out more software, such as Maxima and Minima, IUCLID5 or ECoord, which might be similar to RFScada.