AltCatalog

Alternatives to GlassWire

Visual network monitoring firewall

Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

#6 of 7 in Firewall software

GlassWire ranks #6 of 7 in Firewall software, with an Alt Score of 55. It is proprietary, freemium from Free and available on Windows and Android. 8 of 9 checklist rows are verified against a public source.

Most compared with pfSenseNetGuardLuLu
Official site Suggest an edit Data history Work on GlassWire? Claim this page
Who it's for

Windows and Android users who want visibility into which apps are using their network and the ability to block suspicious or unwanted connections. Useful for privacy-conscious users, IT-savvy people troubleshooting bandwidth issues, or anyone wanting early warning of malware phoning home.

What you get

A real-time, graphed view of all network traffic in and out of your device, broken down by app, host, and IP address, plus a history you can scroll back through. A built-in firewall lets you approve or block any app's internet access individually, and you get alerts for new devices joining your network, unusual app behavior, and data usage nearing limits.

How it works

GlassWire runs as a background monitor that inspects network traffic per-application, plotting it on an interactive graph and logging it for later review. Its firewall component intercepts connection attempts so you can allow or deny them per app, either automatically via profiles or through an ask-to-connect prompt.

Where GlassWire stands out

Verified capabilities most alternatives don't have.

Profiles (home, public) only 3 of 7 apps

See the full checklist

Why people leave GlassWire

Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.

Sign in to add a reason — new reasons go through moderation before appearing.

Ranked alternatives

Ordered by Alt Score. Click any score to see the breakdown.

Sponsored Paid slot. Never affects the ranked order below. Promote here →
01

The open source router/firewall OS.

Apache-2.0 Web
Alt Score

Alt Score · 75

How this alternative ranks. How it works →

Verified coverage 90%72
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

02

No-root Android firewall.

GPL-3.0-only Android
Alt Score

Alt Score · 70

How this alternative ranks. How it works →

Verified coverage 90%67
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

03

Free open source Mac firewall.

GNU General Public License v3.0 macOS
Alt Score

Alt Score · 65

How this alternative ranks. How it works →

Verified coverage 90%61
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

04

The Mac outbound-connection guardian.

Proprietary macOS
Alt Score

Alt Score · 60

How this alternative ranks. How it works →

Verified coverage 90%56
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

05

The friendlier pfSense fork.

BSD-2-Clause Web
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

06

Open source app firewall with DNS filtering.

GNU General Public License v3.0 WindowsLinux
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

Feature comparison

Rows come from the Firewall software checklist (13 rows). Human-verified cells only. ? means the value has not been verified.

Comparing GlassWire pfSense × NetGuard × LuLu × Little Snitch × OPNsense ×
+ Add app
Portmaster
Firewall software checklist GlassWirepfSenseNetGuardLuLuLittle SnitchOPNsense
Pricing model
Starts at
License
Platforms
Outbound connection alerts
Per-app rules
Network-wide (router / gateway)
Profiles (home, public)
Open source
One-time purchase option
Traffic monitoring UI
IDS/IPS
Low overhead
verified pending unknown (?) Click any cell to view its source or propose a value
Sources & verification 13

Every fact and feature listed for GlassWire is verified against its own pages. Each alternative is sourced on its own page.

  • Platforms Windows, Android verified 2026-07-09
    OS: Windows 10 or later ... Try GlassWire on Android
    https://www.glasswire.com/download/
  • License Proprietary verified 2026-07-09
    These are the terms on which GlassWire, a brand owned by Domotz Inc … enable you, the Subscriber … to access our integrated technology platform
    https://www.glasswire.com/license/
  • Pricing model Freemium verified 2026-07-09
    Free Forever ... Download and use our software for free. Upgrade to premium and use all the features with no limitations for complete internet protection.
    https://www.glasswire.com/buy/
  • Starts at Free verified 2026-07-09
    Free ... €0 ... Free Forever
    https://www.glasswire.com/buy/
  • Status active verified 2026-07-09
    Version 3.9.1102, 116.8MB ... GlassWire is now 64-bit. Faster, lighter, and built for modern Windows.
    https://www.glasswire.com/download/
  • Outbound connection alerts Yes verified 2026-07-09
    Whenever anything new on your computer accesses the network GlassWire lets you know with a discreet alert that won't interrupt your workflow or server.
    https://www.glasswire.com/features/
  • Per-app rules Yes verified 2026-07-09
    Take full control over how each application communicates with your network using GlassWire's bidirectional firewall. This feature lets you manage incoming and outgoing connections separately
    https://www.glasswire.com/features/
  • Network-wide (router / gateway) No verified 2026-07-09
    GlassWire only keeps track of bandwidth for the computer and server it's installed on and not total bandwidth usage on your network.
    https://www.glasswire.com/features/
  • Profiles (home, public) Yes verified 2026-07-09
    Firewall Profiles: Instantly switch between different profiles for different scenarios. Have one firewall profile for public WiFi and another for home user.
    https://www.glasswire.com/features/
  • Open source No verified 2026-07-09

    Proprietary commercial software owned by Domotz Inc.

    GlassWire, a brand owned by Domotz Inc ... Subscription, or Service Licenses
    https://www.glasswire.com/license/
  • One-time purchase option No verified 2026-07-09

    Only annual subscription pricing; no lifetime/one-time option.

    Personal Plan ... €2.99 /mo * ... Paid annually
    https://www.glasswire.com/buy/
  • Traffic monitoring UI Yes verified 2026-07-09
    Use GlassWire's simple to use interface to view all your past and present network activity on a graph. Click the graph to see what applications initiated the incoming or outgoing bandwidth
    https://www.glasswire.com/features/
  • IDS/IPS Partial verified 2026-07-09

    Limited IDS-like detection; explicitly disclaims full IDS and has no IPS beyond manual blocking.

    GlassWire also has a toolbox of network security checks like system file change detection, device list change detection, app info change detection, ARP spoofing monitoring
    https://www.glasswire.com/features/

FAQ

Yes. NetGuard and Portmaster have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.

pfSense, NetGuard and LuLu — every license claim links its source.