A number of calculations for the methods I use are best created with a software package that is designed specifically for trading.  I have listed a few of the most popular software packages with which I have some experience.  NOTE: I DO NOT provide support for any of these vendors.

TradeStation Securities

www.tradestation.com

Telecharts (My personal favorite!)

www.worden.com

MetaStock

www.metastock.com

StockCharts.com (Another favorite)

www.stockcharts.com

Incredible Charts

www.incrediblecharts.com

BigCharts

www.bigcharts.com

AmiBroker

www.amibroker.com

eSignal

www.esignal.com

Yahoo Finance

finance yahoo.com