The best Network Monitor alternative to GlassWire is Portmaster, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to GlassWire and many of them are Network Monitors so hopefully you can find a suitable replacement. Other interesting Network Monitor alternatives to GlassWire are simplewall, Little Snitch, TrafficMonitor and Fort Firewall.
Free, open-source privacy suite monitoring all network activity, blocking unwanted connections, using trusted filter lists for ads and malware, enforcing DNS-over-TLS, providing custom app and global rules, and supporting advanced privacy management.
Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.
Firewall application for monitoring and controlling outbound network connections, notifying users of attempted access, supporting rule-based blocking, real-time alerts on suspicious activity, and preventing unauthorized data transmission on macOS systems.
Shows real-time network speed, CPU, and memory usage on Windows via a floating window or taskbar widget. Features customizable skins, historical traffic stats, resource monitoring, and lightweight operation for home or advanced users. Free and open-source.
Comprehensive Windows software for internet traffic control, enabling users to set bandwidth limits for applications or connections. Offers real-time monitoring, long-term stats per app, and detailed internet usage reports. Ideal for managing data efficiently and enhancing network performance.
Sniffnet is a network monitoring tool to help you easily keep track of your Internet traffic.
A powerful tool which extends the functionality of Windows Firewall and provides new extra features which makes Windows Firewall better.
LuLu is the free, shared-source macOS firewall that aims to block unknown outgoing connections unless explicitly approved by the user.
NetWorx is a simple, yet versatile and powerful tool that helps you objectively evaluate your bandwidth consumption situation. You can use it to collect bandwidth usage data and measure the speed of your Internet or any other network connections.
Minimal Firewall is a portable Windows firewall frontend that alerts users to internet connections without requiring custom kernel modifications or disabling core isolation, striking a balance between TinyWall's security and SimpleWall's functionality.
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Powerful control for the tech-savvy. More free firewall blocking options than Glasswire, which only allows 2 blocks for free.