Primer Design
http://www.premierbiosoft.com/netprimer/index.html
http://frodo.wi.mit.edu/
 
 
    Random Generator 
http://www.random.org/sequences/?min=1&max=36&col=1&format=html&rnd=new
    SAM files
http://samtools.sourceforge.net/SAM1.pdf
    Statistics
http://easycalculation.com/statistics/standard-deviation.php
    Data Manipulation
http://code.google.com/p/google-refine/