http://mockdraftable.com
Puts all the combine #'s in graph form, for all the prospects. Has past 3's as well. The most interesting thing is that it uses some math to generate a list of previous combine participants that posted similar #'s. Two interesting things I saw so far:
1. Donte Moncrief gets comped to Cordarelle Patterson and Andre Johnson
2. A guy named Charles Johnson out of Grand Valley state puts up almost identical #'s to Moncrief and is about the same size and was a 7th round pick in 2013 and is now on the Browns practice squad with a torn ACL after failing to stick with the Packers. So the #'s don't mean much if you can not play.
All in all, a neat site that can steal a bunch of time.