looking for 1 of the 2 1. backtesting based on historical data 2. just loading my positions (web?) to get better risk analysis (greeks)
I hear this is good for back test strategies. https://cmlviz.com/ We don't offer a real paper trading environment you can use for more than a short time. We offer a number of broker neutral platfrom for real trading, https://www.lightspeed.com/technology/trading-software/