Stock Trading Open Source Technologies
AIOTrade
http://sourceforge.net/projects/humaitrader
http://blogtrader.org/
AIOTrade (formerly Humai Trader Platform) is a free, open source stock technical analysis platform built on pure java. Its pluggable architecture is also ideal for custom features extending, such as indicators and charts. It Requires JRE 1.5.0+.
Auge
http://sourceforge.net/projects/auge
http://auge.sourceforge.net/
Auge is an easy-to-use financial portfolio management application. Auge will help you monitor and analyze your stock and mutual [...]