Any good free Scada/PLC simulation softwares like Wincc & Logixpro?

for simulation use omron cx programmer for cp1e its very easy to work with

Factory I/O by Real Games

and ITS PLC.

Cx-Programmer 

A simulation tool for Omron PLCs

Delta plc software is available free in the internet so that we can download it for free for programming and for simulation.

GX-Developer is a good PLC simulater 

Wincc is good it can in big project  and it easy to use for simulation

for easy simulations or http://thelearningpit.com/lp/logixpro.htmlLogixpro 500

Combine our ProSim-II programmable process simulations with a PLC Editor/Emulator which mimics Allen-Bradley's (Rockwell) RSLogix 500, and you have LogixPro 500; a complete stand-alone PLC training system without the expense of a PLC.

LogixPro 500 is the ideal tool for learning the fundamentals of ladder logic programming. The look, feel and operation of LogixPro's ladder rung editor so closely mimics Rockwell's world renown PLC editing software, that many need a second look to be sure whose editor they're using. Of course the give-away is the window containing one of our ProSim-II Simulations. This is where LogixPro really out-shines typical PLC training setups employing a PLC connected to a handful of switches and lights. By graphically simulating process equipment such as conveyors, bottling plants, etc. in software, the synchronous and interactive nature of real industrial processes, presents the student with a far more realistic and challenging programming experience.

SCADA: Wonder ware (INTOUCH), Rsview32, Basic Applications Development with SCADA

unity pro and RS-logix500 for PLC is also good 

LabVIEW can serve the purpose, as LabVIEW can be used for programming as well as we can design any type of SCADA on the same software