I run a screener that I programmed in C++ and use data from a free source. Looking to find a reliable paid source with an API and accurate data that is adjusted for splits and dividends. I trade stocks on NYSE, NASDAQ, AMEX, TSX.
I did some searching for the best paid data source for EOD with an API and this is what I came up with.
Quandl – $49.99 a month, lots of financial data and the API looks pretty good also
Metastock – they quoted me $35.95 a month for NYSE, NASDAQ, AMEX and TSX….