I have not used Ninja trader but I see but when i see screenshots of it I find it resembles OEC trader.
I am with ATC but am told that ATC trader is a white label version of OEC. Is OEC trader a white label of Ninja? If so can i use Ninja plug ins?
I am going to ask my broker but thought maybe I could get some insight from the community.

OEC Trader and Ninja Trader are completely different and not 'related'.

I have tried OEC (Apex Trader) side by side with NT (and Sierra).

Be careful; OEC does not capture every tick - look at my posts on their support thread where they admit they exclude spread trades - whatever that means, as I have no idea why they would exclude spread trades from tick data as they are legitimate trades.

OEC use Easy Language to program indicators and strategies whereas NT uses C+ or C++ (not sure which one).

So indicators written in one cannot be used in the other.

steve2222 

whereas NT uses C+ or C++ (not sure which one).

NinjaTrader uses C#.