Don't know about buy sell signal software, but you can watch RT live & EOD charts of all commodities (MCX & NCDEX & equities) on TradeTiger software of Sharekhan OR TTadv platform from IndiaInfoline (IIFL) OR ODIN client or ODIN diet platform of any Broker. ichart, investbulls & mcx itself also provide intraday & EOD charts. With all trading platforms said above, you can watch Real-time charts with lots of Indicators. I hope this may useful to comodity traders.
Regards,
-tkamal