there list of trading applications is endless. I would like you to list a handful of tools/libraries/programms you found useful (no need to eloborate in detail why or how). just a simple list. I find the below most practical in what I do. http://fmlabs.com/toolkit.htm http://www.stockfetcher.com http://www.needfortrade.com http://stockcharts.com (yes! very practical & quick)