Always There is a Difference ; for me it is remarkable : see ... Limited free edition does not provide the content filtering capabilities such as blocking pop-up windows, ads, VB scripts, cookies, etc. and other extra features Outpost Pro 2.1 vs. Outpost Free 1.0 Outpost is available in two versions: Free (1.0) and Pro (2.1). Here is a quick comparison of the differences between these versions: Featues Outpost Pro 2.1 Outpost Free 1.0 Packet/Application filtering Yes Yes Network monitoring Yes Yes Web privacy Yes Yes Components Control (Anti-Leak) Yes No Auto-configuration of apps/network Yes No History of connections/events Yes No Stateful Inspection technology Yes No Internet Connection Sharing (ICS) Support Yes No Automatic Online Updates Yes No Support Service Yes No Saw!!! I know u have to open your wallet But it is worth;I think