GlassWire monitors network traffic and shows it as a graph, breaking down bandwidth usage by app so you can see exactly what is sending or receiving data on your PC. It includes a built-in firewall that lets you block specific apps from the internet with one click, and it alerts you when a new app connects to the network for the first time or when unusual spikes occur. It is popular with users who want a visual, easy-to-read alternative to Windows' built-in firewall settings.
Why GlassWire Stands Out From a Standard Windows Firewall
Windows' built-in firewall settings are functional but give little visibility into what is actually happening on the network, while GlassWire turns the same data into a live, color-coded graph of traffic per application. Its one-click app blocking lets you stop a specific program from accessing the internet the moment you spot it using unexpected bandwidth.
GlassWire Features
- Live Network Graph — visualize incoming and outgoing traffic in real time.
- Per-App Bandwidth Monitor — see exactly how much data each application uses.
- Built-In Firewall — block specific apps from network access with one click.
- Security Alerts — get notified about new apps, new connections or unusual network changes.
- Network Activity History — review past network usage by day, week or month.
- Remote Device Monitoring — monitor network activity on other devices running GlassWire (paid tiers).
- Ad and Tracker Blocking — optional filtering of ads and trackers (paid tiers).
How to Install GlassWire on Windows
- Open the official download page using the button on this page, which goes to glasswire.com.
- Download the Windows installer (or find the Android app on Google Play).
- Run the installer and follow the setup prompts.
- Launch GlassWire and let it build an initial baseline of your network activity.
- Review the firewall and alert settings to configure how you want to be notified.
Is GlassWire really free?
Freemium. GlassWire's free version covers core network monitoring and firewall features for one device; paid Basic and Pro plans add remote device monitoring, extended history, and features like ad blocking.
How to download GlassWire safely
Use the request button on this page and we will email you the current link for www.glasswire.com — the publisher's own website — so you receive the authentic build. We do not host, mirror, patch or repackage this software in any way.
Avoid third-party "download manager" sites offering GlassWire. They commonly wrap the genuine installer in their own bundler, which is how adware and browser hijackers get onto a machine that the user believed was clean.
Alternatives to GlassWire
Other free antivirus & security software worth comparing before you decide:
ZoneAlarm Free Firewall
Free firewall with an optional paid security suite.
Wireshark
Open-source network protocol analyzer.
Comodo Firewall
A free firewall with sandboxing for unknown applications.
Frequently asked questions
Is GlassWire free to use?
Yes, a free version is available with core monitoring and firewall features; paid tiers add remote monitoring and extended history.
Does GlassWire replace my antivirus?
No, GlassWire is a network monitor and firewall, not a full antivirus; it is usually run alongside antivirus software.
Can GlassWire block specific apps from the internet?
Yes, its built-in firewall lets you block or allow individual applications with one click.
Is GlassWire available on Android?
Yes, GlassWire has an Android app in addition to the Windows desktop app.
Does GlassWire alert me to new devices on my network?
Yes, it can alert you to new apps, new connections and other unusual network activity depending on settings.
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