Best Firewalls.

RemovedUser6 appsUpdated Jun 3, 2024

Portmaster
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Free and open-source tool that monitors all network activity, blocks unwanted connections, uses filter lists for ads and malware, enforces DNS-over-TLS, and sets custom app rules.
Cost / License
Freemium
Open Source
Application typeApplication types
Firewall
Network Monitor
Platforms
Windows
Linux
+3
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RemovedUser’s note
Linux & Windows.
LuLu
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Free macOS firewall blocking unknown outgoing connections until approved, detects unauthorized activity, open source, privacy-focused, audit-ready code.
Cost / License
Free
Open Source
Application typeApplication types
Firewall
Network Monitor
Platforms
Mac
+2
Re
RemovedUser’s note
MacOS.
simplewall
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Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.
Cost / License
Free
Open Source
Application typeApplication types
Firewall
Network Monitor
Platforms
Windows
+2
Re
RemovedUser’s note
Windows.
IPFire
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IPFire is a server distribution with intended to use as a firewall. It focuses on flexibility, and scales from small to middle sized business networks and home networks.
Cost / License
Free
Open Source
Application typeApplication types
Firewall
VPN Service
Platforms
Linux
Re
RemovedUser’s note
Linux.
NetGuard
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Controls individual app internet access without root, blocks Wi-Fi and mobile data, supports IPv4/IPv6, logging, privacy protection, and detailed notifications.
Cost / License
Freemium
Open Source
Application typeApplication types
Firewall
Privacy Tool
Platforms
Android
Android Tablet
F-Droid
OpenAPK
Re
RemovedUser’s note
Android.
Lockdown Privacy
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Lockdown Privacy is an Open Source and free firewall for your iOS device. We built the product to help protect users from app developers and analytics companies that are monetizing user data without consent or transparency.
Cost / License
Freemium
Open Source
Application typeApplication types
Ad Blocker
Privacy Tool
Platforms
Mac
iPhone
iPad
Re
RemovedUser’s note
IOS & IPadOS.