security/en-gb/anti-virus-spyware-free-download.htm

Again: Many former vendors of Free firewalls (e.g. Tiny, BlackIce, and Kerio) have been taken over or disappeared from the market. Therefore, the Top Free Firewalls for Windows 7 candidate list might be smaller than what you have expected.

Not all free Windows 7 compatible firewalls are top products. To be listed here a software must have been rated very good or excellent, but in most cases when a firewall software / vendor is not listed it is due to a lack of Windows 7 compatibility, not quality. The comments section at the end of this article sometimes gives the reason or contains more background information.