It runs great with Emsisoft Anti-Malware. (See my signature.) I wouldn't recommend running it alongside Online Armor as they are both Firewall/HIPS/Anti-Logger apps and will (most likely) cause conflicts. Choose either OA or PrivateFirewall depending on your particular needs or whichever runs best on your machine. I have used both extensively and think both are great...however, PF runs much more smoothly and quietly on my setup (in terms of much lower CPU and RAM usage) and therefore is what I choose.