CheckPoint ZoneAlarm is the best firewall to use peronal or as a business use. ZoneAlarm have many products like ZoneAlarm PRO Firewall 2012, ZoneAlarm Internet Security Suite, ZoneAlarm extreme security 2012. For download these products, use this link.
1- ZoneAlarm Social Guard
2- ZoneAlarm extreme security 2012
3- ZoneAlarm Internet Security Suite 2012
4- ZoneAlarm Antivirus + Firewall 2012
5- ZoneAlarm Pro Firewall 2012
6- ZoneAlarm Free Firewall