Is there a free site or software that can download and use as a stock trading robot? (say what price to sell)?

just looking for some area or a place to find out what actions would be good for the purchase and gives a good idea what price to sell. if theres a free site this data into a little, would be much appreciated.

Sorry, people who create software useless always paid much money for it. And when not working, are to blame for not exercising sufficient discipline.

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