What are some alternatives?
When comparing Filseclab Personal Firewall and Sqreen, you can also consider the following products
TinyWall - Lightweight and non-intrusive firewall
Incapsula - Incapsula is a Security CDN that makes any website safer, faster and more reliable. 5 minute setup will make a world of difference.
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
WatchGuard NGFW - The traditional Next Generation Firewall (NGFW) isn’t enough anymore. WatchGuard’s approach meets your advanced security management and deployment needs
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.