Funny you mention that, because we just deployed a big update that adds all of this.

Cryptowatch can now render OHLC, Heiken-Ashi, Bar, or Line. It also lets you completely customize indicators and overlays such as MACD, RSI, EMAs, Ichimoku cloud, Keltner Channel, and Aroon.

https://cryptowat.ch

Some screenshots:



http://i.imgur.com/0fpkHU0.png
http://i.imgur.com/FOMcq0V.png
http://i.imgur.com/ulkLWyJ.png
http://i.imgur.com/85tyaXz.png

http://i.imgur.com/6VjZdb4.png
http://i.imgur.com/FxyKIam.png
http://i.imgur.com/XySF0Tc.png

To access these options, just open the settings panel by clicking on the button on the top.