One comment when it comes to youtube videos: take it with a pinch of salt.Because it fails to protecting my pc from common viruses and network attacks.But Private firewall protect me from many of them in windows 7 and 8.And please check Pc security Channel video.That also shows how this product failed.
What may fail or work for one user, can have the opposite effect to another.
ZoneAlarm firewall (unless you are referring to another of their products) is not suppose to block viruses. Network attacks yes, depending on what you classify as network attack.
Private firewall: It is a proactive multi-layer security solution, offering behaviour blocking technology alongside standard firewall protection. Using Behavioral-based Monitoring, it features zero-hour virus, spyware, and malware protection, process and application security, and registry protection for example, so you can't really compare it to ZoneAlarm in that sense.
In any case, any firewall solution, works fine and as intended. Binisoft WFC, Sphinx Soft's Windows 10 Firewall Control and TinyWall are additional features to be "added" to Windows Firewall for either ease of use, more flexibility or advanced users configurations (if you do not want to dig into stock Windows Firewall options)
In the end the available free options exist:
Outpost Free suite (just for its firewall usage)
Binisoft Windows Firewall Control
Sphinx Soft Windows 10 Firewall Control
Those are the standalones that still exist and work fine, one offering more bells and whistles than another etc.