Create a software that will link Ninjatrader8 Trading software with other Trading software when its time to take a trade

I would like to have piece of software that will take the trade in other trading platform when an alert is poping or a trade is taken on the ninja trading platform or both. The trade have to be place on market order for now. My first platform to link with NinjaTrader8 will be Ctrader from cTDN. I would like to be able to add other platform in the program later on with the ability to take trade on multiple platform. The program have to be independent from Ninjatrader8. Thanks