I use this platform for a few weeks on datafeed rithmic, and in my opinion they provide the visualization is very convenient for the analysis of order flow, especially quant-chart visualization. Something similar I saw at Nanex software. Anyone use it? Maybe someone saw something similar for the stock market? I think this visualization will be more useful in the stock market, but at that moment it can't connect to NYSE exchange, only CME.
Not all algo's trade based on order flow. Secondly, order flow analysis becomes marginalized as a useful HFT tool because of all of the spoofing and all of the cancellations. Once the CME starts charging for cancels, then this might be a good idea.