Go to freshmeat and do a search for firewall.  You'll get all of the below 
plus lots of others which won't really be comparable, but you should be 
able to pick the reasonable ones.

At 04:39 AM 3/11/2004, Barber, Patrick (MCI) wrote:
>As a starting point compare with Smoothwall, IPCop, FWBuilder, and Mitel 
>SME Server (from www.e-smith.org)
>
>Hope this helps
>
>Patrick
>-----Original Message-----
>From: Andy Prasetya [mailto:andyprasetya at netscape dot net]
>Sent: 11 March 2004 06:48
>To: m0n0wall at lists dot m0n0 dot ch
>Subject: [m0n0wall] Comparative Products to M0n0wall
>
>
>Dear M0n0wall Community,
>Recently, my supervisor asked me to develop a comparative
>chart/information about M0n0wall and other "peer-class/quality"
>products. Does anybody can help me to find some few (at least 3 or 4
>products) which can be compared to a M0n0wall box, in terms of their
>features?
>
>Thank you very much.
>andyprasetya at netscape dot net
>
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Good, Fast, Cheap... Pick any two
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