Portmaster is a free and Open Source application that puts you back in charge of your computer's network connections.

Minimal Firewall operates alongside Windows Firewall to enhance security by automatically blocking all unknown connections. This proactive approach prompts you to establish application-specific rules, helping to mitigate risks such as malware, telemetry, and data leaks.

Windows Firewall Control extends the functionality of the Windows firewall and provides immediate access to the most frequent options.

Fort Firewall is a simple Open Source Windows Firewall app.

Little Snitch prevents applications from establishing outgoing internet connections and “phoning home” without your knowledge or permission.

Snort is an Open Source network intrusion prevention system capable of performing real-time traffic analysis and packet logging on IP networks.

IPBan offers a simple option for securing your machine while on the internet by blocking hackers and botnets via your firewall.

IPFire provides you with a modern Open Source, Linux-based firewall that is user-friendly.

Kerio Control Firewall was designed to protect medium and small businesses from a comprehensive range of invasive and crippling corporate network threats.

EasyFirewall enhances your firewall configurations, providing improved effectiveness and user-friendliness, ensuring optimal security levels are maintained.

FortKnox Personal Firewall provides configurable protection against Internet threats and other types of malicious attacks.

Firewall Easy is a portable tool that uses the Windows firewall to block apps from accessing the internet effectively.

Fail2Ban4Win is a background service for temporarily blocking IP ranges in Windows Firewall.

TinyWall is a free program to harden and control the advanced firewall built into Windows 7 and above.

A1RunGuard enables bulletproof unwanted program blocking, password protection for executables, and anti-ransomware protection.

PeerBlock Portable is a tool that allows you to block online communication with advertising, spyware, p2p monitoring, and other servers based on IP addresses. It is also available as an installer.

Use HS Blacklist Check to scan your system for botnet C&C servers linked to Dridex, Emotet (also known as Heodo), TrickBot, QakBot (also called QuakBot/Qbot), and BazarLoader (also referred to as BazarBackdoor).

ZoneAlarm Pro Firewall automatically starts protecting you from malicious web content the moment it's installed on your machine using multiple tools. ZoneAlarm Free Antivirus is also available.

ZoneAlarm Free Firewall provides you with a powerful alternative to the Windows Firewall and doesn't require constant monitoring or managing.

ZoneAlarm Free Antivirus + Firewall is an all-in-one free security that seamlessly integrates ZoneAlarm Antivirus with Firewall.

Windows 10 Firewall Control is intended to be a simple and exhaustive solution for applications network activity controlling and monitoring.

Firewall++ provides you with an easy-to-use firewall and network monitoring tool.

Firewall App Blocker offers an easy-to-use interface to block or unblock specific applications with a simple drag and drop selection.

Evorim Free Firewall provides you with all the tools needed to protect against threats from the internet and more.

SpyShelter Firewall will help protect your machine from keyloggers, webcam loggers, sound loggers, and numerous other malicious applications.