TinyWall - Lightweight and non-intrusive firewall
Mailtrap - Email Delivery Platform that delivers just in time. Great for businesses and individuals.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
FakeSMTP - FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily.
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.
MailCatcher - MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a...