Pairtradefinder is very useful for stocks. very low risk because it don't require trader to pick market direction.
Someone has already made 30-40k a year with this software very safely!!!
Only problem is: this program is not free. it need some educate!!!
http://www.pairtradefinder.com/freesoftwaredownload.php
if someone have login to http://www.traderszone.com/trading-software-exchange/8470-pairtradefinder-v-3-04-cracked-m@f-tpodt.html
Please share