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Finance API / Quandl

https://www.quandl.com/

https://code.google.com/p/yahoo-finance-managed/

https://developer.yahoo.com/yql/console/

https://currencylayer.com/

http://www.financialcontent.com/support/documentation/json_quote_api.php

https://openexchangerates.org/

http://www.programmableweb.com/news/25-finance-apis/2008/04/24

https://developers.tradeking.com/documentation/getting-started

Name

Description

URL

Yahoo Finance

Google code project of .net wrapper for Yahoo webservice

Yahoo YQL

Queries directly to Yahoo’s services

CurrencyLayer

Real-time JSON API for 168 World Currencies

Financial content

FinancialContent is the trusted provider of stock market information to the media industry

Open Exchange Rate

Real-time exchange rates & currency conversion JSON API

ProgrammableWeb

A web site with information about all type of APIs

TradeKing

Trading API