I used ZoneAlarm firewall for the last few years on my main rig. It was pretty good, and I liked the light behavior based HIPS too. I did have a few issues with it though, which is why I finally uninstalled it and will continue with just Glasswire or Windows Firewall Control. I may though in the future install ZoneAlarm 14 firewall and antivirus. Problems I had: It used to block Windows hotspot (aka Internet Connection Sharing), although later this issue went away, it conflicted with Rosetta Stone unless ipv6 filtering was disabled, sometimes the settings did not stick for individual programs, at some point it started to block all new processes by default without asking, which was kind of good but also inconvenient (also, I think this was a bug).