Is there a way (website/code) to find funds/etfs for a given asset class and how much data history is available (yahoo finance or other) ? It could be as simple as a list of funds by asset class and their data start date.
yahoo finance has a large set of historical data. it's available for free. There are a few libraries, to retrieve the data
quant tick downloader. free with the most accurate free tick data u can find.
also for yahoo finance data in R try the Quantmod package
getSymbols("^GSPC", from="1990-01-01" , to ="2000-01-01" )