Draft Wizard by Fantasy Pros. Not the most powerful and doesn't list a ton of info, but it acts like a typical cheatsheet that you can enter your own rankings and it will cross players off automatically as it syncs with your league. I have found nothing as valuable when it comes to live online drafts with short timers. You don't waste time crossing off who other people select and you can just focus on who you want to pick.
I've mentioned it to FBG and to other sites and they all seem to just shrug it off. I don't understand it. When you are doing a live draft, you don't have time to be doing all this other stuff and you don't have time to compare detailed statistics. You have to do that ahead of time. When you're drafting, you should have a list of players and that's about it.
http://draftwizard.fantasypros.com/assistant/?sport=nfl
$15 for the software + $5 per platform. If you want to sync with MFL and Yahoo, your total would be $25.