TheXpert

The simplest way to buy some TSLA or GOOGL or EUR or BITCOIN ))
https://exchange.currency.com/trading/signup?c=ifrr2ra4&pid=referral

Set of instruments for OANDA's data analysis
http://www.trend-lab.ru/2016/08/oandax-full-review.html

Futures volumes for Metatrader 5
http://www.trend-lab.ru/2013/07/clusterx-for-mql5.html

Nice marketdepth for most common cryptoexchanges for MT4
http://www.trend-lab.ru/2014/11/marketdepth-mt4-exchanges-support.html