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+.
i just downloaded this nice little software. It's just too perfect in little many areas. It has a simplicity hard to find in most softwares I've tried up to now With some 10-20 little improvements can be all needed for studying charts