Nice site, PPSIQS is an excellent tool. I can usually factor RSA-256 within 20-30 minutes on my P4.

Some suggestions I have for tools that you can add are:

DAMN Hash Calculator (http://www.damn.to/software/files/dm_hc151.zip)
SlavaSoft HashCalc (http://www.slavasoft.com/zip/hashcalc.zip)

And maybe a link to http://www.alpertron.com.ar/CALTORS.HTM