simplewall
TinyWall
Windows 10 Firewall Control
GlassWire
Little Snitch
HostsMan
NetLimiter
Portmaster
Symantec Email Security.cloud
Barracuda Email Security Gateway
Proofpoint Email Security and Protection
Cisco Email Security
Alert Logic Threat Manager
FortiMail
Area 1 Security
Barracuda Email Protection
simplewallSimplewall
Prompt on screen
Older UI as compare to tinywall
I haven't found an option for block by PID if in case it bother you
Packet logging is there, helpful for insight
Update: DNS query resolve available (* only on pop up window, not available in packet log history)
Last update 05 / 09 / 2020 (https://github.com/henrypp/simplewall/blob/master/CHANGELOG.md)
TinyWall - Lightweight and non-intrusive firewall
Barracuda Email Security Gateway - Barracuda's Email Security Gateway is a powerful antivirus filter specifically designed to identify and eliminate email-borne threats, stopping hazards before they reach the network.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Proofpoint Email Security and Protection - Learn about Proofpoint's email security solutions that protect organizations against threats such as email fraud, phishing, spam, bulk email, and viruses.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Cisco Email Security - Cisco Email Security protects against ransomware, business email compromise, spoofing, and phishing.