Scada is VERY capable, for anything....it is just how to interface it to Arduino that stops me....
Have been using Scada (as an operator) for quite a while, but I have never been on the programming side of it...
Link 1: Winlog Lite: free SCADA software | SCADA free download (might be this one that had the home auto demo I mentioned)
Link 2: http://www.integraxor.com/
Link 3: Free SCADA download | SourceForge.net
Link 4: freescada.com - This website is for sale! - freescada Resources and Information.