Here is a list I compiled of firewalls for Linux and Windows, formatted and alphabetized for your viewing pleasure. Sorry all you Mac users, you're out of luck Maybe someone else could make a list of Mac firewalls.

If anyone knows of any more that I didn't include in this list (I am sure there are many of them) please feel free to post them and I will add them to the list. Also, if you find any errors (broken links, etc) please post or PM me and I will fix them ASAP.

Please forgive me if this has been done before.. I searched and found nothing that looked like a list of firewalls.

Here we go...

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Linux Many of these are actually bootable linux distros. I'm pretty sure that all of them are free (I love open source )



Alfandega Firewall


BBIagent


BizGuardian Firewall


CD-ROM Firewall


Coyote Linux Floppy Firewall/Wolverine Forewall and VPN Server


Devil-Linux


Firewall Builder


floppyfw


FloppyGate


FrazierWall Linux


FREESCO


GateProtect Firewall Server (Download.com link)


Guarddog


InJoy Firewall


IPCop


IP Filter


ipkungfu


iptables/netfilter


IsinGlass


LEAF (Linux Embedded Appliance Firewall


Linux Floppy Router


Linux LiveCD Router


Mini OpenBSD Router/Firewall/Gate


NetBoz Firewall


NetBSD/i386 Firewall Project


NetMax Suite


Norm Rubin's Linux Router


OpenBSD Packet Filter


Projectfiles.com Linux firewall


rcf Linux Firewall


redWall Firewall CD


Seattle Firewall


SecurePoint Firewall Systems


Sentry Filewall CD


Smoothwall


SUSE Firewall on CD 2


TrX Live Firewall

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Windows Free ones are marked, most of the rest have a 30-day trial or something like that. Then you have to buy them.



602 LAN Suite <--free


8Signs Firewall


AlertWall Personal Firewall


Armor2net Personal Firewall


BlackICE PC Protection


BullGuard


CheckIt Firewall


eTrust EZ Firewall


Firekeys


Freedom Firewall


F-Secure Internet Security 2004


GateProtect Firewall Server <--free (Download.com link)


GreenBow Personal/Distributed Firewall


HackerSmacker


InJoy Firewall


Kerio Personal Firewall <--free


Look 'n' Stop


McAfee Personal Firewall


Norman Personal Firewall


Norton Personal Firewall 2004

Norton Internet Security 2004


Omniquad Personal Firewall <--free


Outpost Firewall <--free


Panda Platinum Internet Security


pcInternet Patrol


Preventon Personal Firewall


Primedius Firewall Lite <--free


Privatefirewall


Proxy - Pro Professional GateKeeper 4.5 (Download.com link)


VSOCKS Light Proxy Server


SecureUp Personal Firewall


SurfSecret Personal Firewall


Sygate Personal Firewall <--free


TINY Personal Firewall <--free version available


Trend Micro PC-cillin Internet Security


Trustix Personal Firewall


VirusMD Personal Firewall


VisNetic Firewall


Webroot My Firewall Plus


WinProxy


x-Wall series


ZoneAlarm <--free

Mac

Originally posted here by MsMittens
MacIntosh Firewalls:

Norton Personal Firewall for Macintosh

DoorStop Personal Beta

NetBarrier (OS 8, 9 and OS X)

IPNetSEntryX (there is a classic version as well)

Firewalk

BrickHouse

And remember that OS X comes with a built-in firewall, IPFW.

SecureMac (for all things related to Macintosh and security)

I hope this will be of use to someone. See y'all later

mjk