TinyWall - Lightweight and non-intrusive firewall
Imperva Cloud Application Security - Deploy your applications and data where you want. When you want. Imperva keeps them secure in the cloud, on premises, and in hybrid clouds.
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
Incapsula - Incapsula is a Security CDN that makes any website safer, faster and more reliable. 5 minute setup will make a world of difference.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Sucuri - Website Protection, Malware Removal, and Blacklist Prevention