http://www.tickquest.com/NeoTicker/
NT public forums: http://forums.neoticker.com/
MetaTrader4:
http://www.metaquotes.net/
MetaQuotes Language 4 official forums: http://forum.mql4.com/
Tradestation 8.1:
http://www.tradestation.com
eSignal:
http://www.esignal.com/
MultiCharts:
http://www.tssupport.com/
StockChartX Pro 5.0
http://www.modulusfe.com/
QuantDeveloper:
http://www.smartquant.com/
AmiBroker:
http://www.amibroker.com
WealthLab Developer 4.0:
http://www.wealth-lab.com
Ninja Trader:
http://www.ninjatrader-support.com/index.htm
Ensign:
http://www.ensignsoftware.com/
TradeMaven:
http://www.trademaven.com/
last updated: 6/15/06
Please feel free to suggest additional important links relating to this subject.