Talk about unexpected announcements. As you may recall, back when Outpost was a new player in the firewall arena, the app did have a basic free version that garnered critical praise for its features and thorough protection. Unfortunately, Agnitum never updated the software to include the many improvements done in the "Pro" versions, or to improve compatibility with the new Windows versions.
But it looks like the team decided to change this, and they're offering a free version of Outpost 2009, with the usual restrictions applied (you can also get the Pro version for free with TrialPay, but I think there's enough spam in the web nowadays). Still, Agnitum remains as one of the best options for a firewall according to the various tests done around the net, so even a basic version is a good alternative.
I would like to know why Agnitum decided to do this right now, and why they did not update the firewall during almost seven years, though.