GlassWire

GlassWire is a well-designed network monitoring and security application that gives users greater visibility into how their computers communicate with the internet. Its primary strength is the Traffic Monitor, which presents incoming and outgoing network activity through an interactive graphical interface. Users can investigate bandwidth consumption by application, hostname, IP address, traffic type, and destination country. The historical network activity feature is particularly useful because it allows users to review connections that occurred while they were away from their computers. GlassWire also includes a Network Scanner that identifies devices connected to the local network and can notify users when unfamiliar devices appear. For additional security visibility, the application provides alerts about unusual network-related changes and newly detected application connections. Its functionality is explained in the official GlassWire user guide.

The GlassWire Protect component extends the application beyond basic bandwidth monitoring by providing graphical management of the Windows Firewall. Users can inspect applications that access the internet, review their connection destinations, and create rules to allow or block incoming and outgoing traffic. Premium subscribers also gain access to additional controls, including Ask to Connect mode, Lockdown functionality, firewall profiles, and more extensive historical monitoring. The software uses the built-in Windows Firewall rather than relying entirely on a separate firewall engine, which provides a familiar foundation for managing application connections. Its hardware resource monitoring capabilities also provide visibility into CPU, memory, GPU, and disk activity. Version 3.11.1183, released on November 9, 2026, focuses primarily on interface refinements, localization improvements, and stability fixes. The official GlassWire changelog documents these updates and publishes release-specific SHA-256 checksums. Performance is generally suitable for everyday monitoring, although actual resource consumption depends on network activity, historical data collection, and the device configuration.

From a usability perspective, GlassWire stands out for making technical network information accessible to users who may not be comfortable working with command-line networking utilities or complicated firewall interfaces. Its visual graphs, application lists, notifications, and searchable connection information make investigating unexpected bandwidth consumption relatively straightforward. The Windows desktop application performs its core traffic monitoring locally and does not require a continuously active cloud connection to display ordinary network activity. However, account management, subscription activation, and certain connected services require internet access. GlassWire also offers an Android application for mobile data monitoring and network activity visibility, but its Android functionality should not be confused with the full Windows desktop firewall experience. The Android application uses Android's local VPN mechanism for certain network monitoring functions. GlassWire is proprietary commercial software rather than an open-source security project, and its free edition has meaningful feature and history limitations. Overall, it is a strong choice for users who want an understandable view of network activity and convenient application-level firewall management, but it should complement rather than replace dedicated antivirus, endpoint detection, and comprehensive network security solutions. More information about its subscription options is available on the official pricing page.