I enjoy and support as many open source projects as I can. Open source projects are:
+ quality software, written and reviewed by some of the best developers
+ tested by many testers, using commonly acceptable methodologies
+ the community is open to suggestions for improvement and implements them fast
Contributing:
Participating:
Advanced Stock Tracker
http://advancedstocktracker.org/
Following:
Eclipse Trader
http://eclipsetrader.sourceforge.net/