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Best Free Alternatives to GlassWire Pro 3.3.6
Stop paying $3.00/mo ($35.88 billed annually). Discover professional-grade tools that won't break your budget.
Category: Network Monitor / FirewallVerified for 2025
Top Recommended Replacements
Portmaster
FREETop Professional Free Alternative
Why we like it
The 2025 privacy powerhouse; 100% free and open-source; features system-wide ad-blocking and an optional 'Safing Privacy Network' (SPN) that routes every app through a different IP; incredibly granular control.
Keep in mind
The user interface is information-dense and can be intimidating; the SPN features require a subscription (~4€/mo).
Simplewall 3.8.7
FREEBest for Minimalists
Why we like it
Updated in late 2025 (v3.8.7); 100% free; strictly utilizes the Windows Filtering Platform (WFP) without a separate service; virtually zero impact on system resources (~2MB RAM); perfect for dev machines.
Keep in mind
Lacks the graphs, maps, and historical traffic visuals found in GlassWire.
NetLimiter 5.3
FREEBest for Bandwidth Control
Why we like it
The late 2025 'v5.3' update features a 'Priority' engine that automatically gives your coding tools more bandwidth during massive NPM installs; one-time payment for the Pro version; very stable.
Keep in mind
Not open-source; the free 'Monitor' version allows viewing but not the active blocking or limiting of traffic.
Little Snitch 6 / Mini
FREEBest for Mac Users
Why we like it
The gold standard for macOS 16 Tahoe; Little Snitch Mini (App Store) now offers a 'Free Forever' basic monitor; Version 6 features DNS encryption and an integrated blocklist manager.
Keep in mind
Mac-exclusive; the full pro version is expensive compared to Windows alternatives.
TinyWall 3.3
FREEBest for Background Protection
Why we like it
No-popup firewall; 100% free; late 2025 builds offer full support for UWP and Microsoft Store apps; zero telemetry.
Keep in mind
No visual graphs or maps; requires manual whitelisting which can be tedious during initial setup.
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