As far as I understand, Interactive Brokers has Fx trading and quotes. Since they are just acting as broker, not a counterpart, their quotes reflect some leading institution's quotes available via the TWS. Their quotes are compatible with several charting software.
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Esignal, Tenfore, Infotec and others like them are adequate and all good feeds with pricing that I'd think fit most retails traders. Good information, data, etc is a critical trading tools that make a difference over time. I am willing to pay for it.
Ok, great !! I am thinking of using Tradestation charting package. Do you think these providors will be able to provide a Live feed into this package ?
eSignal can send data into TradeStation 2000i. The most recent versions of TradeStation will not accept outside feeds AFAIK, since their business moved to being broker/data vendor.