Just thought Id start a thread for firewall software as that is such important to people using the web.

Im currently using commodo and its version 3 before that I was using PC TOOLS then before that Zone Alarm.

I upgraded to more full featured firewall programs with more security and features as time went on.

The above were all free software:

Here is the Link to Commodo software firewall:

http://personalfirewall.comodo.com/

Please submit any links to firewall software that you think is going to be useful but it must be free no commercial advertising.

Comodo firewall for windows, firestarter GUI for Ubuntu firewall.