Noia's link is great (I've seen that table, it's excellent). Here are a couple others to check out.

Note: These tables don't contain all existing firewalls
http://www.theguardianangel.com/firewall_comparison.htm
http://www.plexon.com/winroute_personal.html

I'll keep checking around, see If I can find anymore links. If I do, I'll post them in this reply.