Open Source Portmaster AlternativesFirewalls & Network Monitors like Portmaster

Alternatives list

1. 

   

   NextDNS

    184 likes

   NextDNS protects you from all kinds of security threats, blocks ads and trackers on websites and in apps and provides a safe and supervised Internet for kids — on all devices and on all networks.

   148 NextDNS alternatives

   Cost / License

   • Freemium
   • Open Source (MIT)

   Application typeApplication types

   • Ad Blocker
   • DNS Resolver

   Origin

   • United States

   Platforms

   • Mac
   • Windows
   • Linux
   • Online
   • Android
   • iPhone
   • Chrome OS
   • BSD
   • iPad
   • UC Browser
   • Vivaldi
   • Google Chrome
   • UniFi Network
   • Safari
   • Yandex Browser
   • Software as a Service (SaaS)
   • OpenWrt
   • Opera
   • Alpine Linux
   • pfSense
   • Mozilla Firefox
   • DD-WRT

   • United States

   

   

   

   +9

   

   More about NextDNS  

   

   Good alternative?Is NextDNS a good alternative to Portmaster?

    
2. 

   

   AdGuard

    306 likes

   Ad-blocking solution eliminating intrusive ads and preventing tracking, with malware protection. Filters pop-ups, banners, and more for clean browsing. Works in the background for ad-free surfing, protects data privacy with Spyware filter, and controls ad display in apps.

   138 AdGuard alternatives

   Cost / License

   • Freemium
   • Open Source (GPL-3.0)

   Application typeApplication types

   • Ad Blocker
   • Privacy Tool

   Origin

   • Cyprus
   • EU

   Platforms

   • Mac
   • Windows
   • Android
   • iPhone
   • Chrome OS
   • Android Tablet
   • HUAWEI AppGallery
   • iPad
   • Microsoft Edge
   • Vivaldi
   • Google Chrome
   • Samsung Galaxy Store
   • Safari
   • F-Droid
   • Android TV
   • Yandex Browser
   • Opera
   • Mozilla Firefox

   • Cyprus
   • EU

   

   

   

   +4

   

   More about AdGuard  

   

   Good alternative?Is AdGuard a good alternative to Portmaster?

    

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   1comment

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   AdGuard vs Portmaster Comments

   Comment by TBayAreaPat · Apr 28, 2023

   AdGuard is great, but it's not a firewall/port system.

   1 of 1 comments

   

   

   • AdGuard is Freemium and Open SourcePortmaster is also Freemium and Open Source
   • AdGuard is an Ad Blocker Portmaster is a Firewall
4. 

   

   Pi-hole

    203 likes

   Blocks ads for all connected devices at the DNS layer without client setup. Provides web control, in-app ad and tracker blocking, DHCP and API support, regex filtering, privacy modes, audit logs, and long-term query analytics for network management.

   48 Pi-hole alternatives

   Cost / License

   • Free
   • Open Source

   Application typeApplication types

   • Ad Blocker
   • Privacy Tool

   Origin

   • United States

   Platforms

   • Linux
   • Self-Hosted
   • CentOS
   • Fedora
   • Ubuntu
   • Debian
   • Raspberry Pi OS
   • Raspberry Pi

   • United States

   

   

   

   +2

   

   More about Pi-hole  

   

   Good alternative?Is Pi-hole a good alternative to Portmaster?

    

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   1comment

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   Pi-hole vs Portmaster Comments

   Positive comment by Raphty · Feb 23, 2022

   Their is a comparison blog on safing.io suggesting when to use what solution https://safing.io/blog/2021/12/09/portmaster-vs-pi-hole/

   1 of 1 comments

   

   

   • Pi-hole is Free and Open SourcePortmaster is Freemium and Open Source
   • Pi-hole is an Ad Blocker Portmaster is a Firewall
5. Ad

   

   

   AdGuard

   Ad-blocking solution eliminating intrusive ads and preventing tracking, with malware protection. Filters pop-ups, banners, and more for clean browsing. Works in the background for ad-free surfing, protects data privacy with Spywa...

   https://adguard.com

   Learn More
6. 

   

   simplewall

    216 likes

   Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.

   40 simplewall alternatives

   Cost / License

   • Free
   • Open Source (GPL-3.0)

   Application typeApplication types

   • Firewall
   • Network Monitor

   Origin

   • Kazakhstan

   Platforms

   • Windows

   • Kazakhstan

   

   

   

   +2

   

   More about simplewall  

   

   Good alternative?Is simplewall a good alternative to Portmaster?

    
7. 

   

   RethinkDNS

    69 likes

   An OpenSnitch-inspired firewall and network monitor + a pi-hole-inspired DNS over HTTPS client with blocklists.

   51 RethinkDNS alternatives

   Cost / License

   • Free
   • Open Source (Apache-2.0)

   Application typeApplication types

   • Ad Blocker
   • Firewall

   Origin

   • United States

   Platforms

   • Online
   • Android
   • Android Tablet
   • F-Droid
   • OpenAPK
   • Obtainium

   • United States

   

   

   

   More about RethinkDNS  

   

   Good alternative?Is RethinkDNS a good alternative to Portmaster?

    
9. 

   

   Fort Firewall

    44 likes

   Standalone firewall for Windows 7 and later featuring flexible rules by application, address, or protocol, wildcards, parent process filtering, SvcHost controls, blocklists, bandwidth graphs, traffic stats tracking, speed limits, and real-time network monitoring.

   Cost / License

   • Free
   • Open Source (GPL-3.0)

   Application typeApplication types

   • Firewall
   • Network Monitor

   Origin

   • Uzbekistan

   Platforms

   • Windows

   • Uzbekistan

   

   

   

   +1

   

   More about Fort Firewall  

   

   Good alternative?Is Fort Firewall a good alternative to Portmaster?

    

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   1comment

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   Fort Firewall vs Portmaster Comments

   Positive comment by RemovedUser · May 5, 2024

   It's more lightweight than Portmaster. It notifies me every time a new app is in use even background programs. Plus it shows the file path for each app which makes it easier to make sure it isn't malware posing as legitmate software.

   1 of 1 comments

   

   

   • Fort Firewall is Free and Open SourcePortmaster is Freemium and Open Source
10. 

    

    InviZible Pro

     32 likes

    InviZible Pro uses DNSCrypt Protocol, Tor and i2pd (I2P Daemon) (PurpleI2P) to achieve maximum security, privacy and comfortable use of the Internet.

    36 InviZible Pro alternatives

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application typeApplication types

    • Privacy Tool
    • Ad Blocker

    Origin

    • Ukraine

    Platforms

    • Android
    • Tor
    • I2P
    • OpenAPK
    • F-Droid

    • Ukraine

    

    

    

    +5

    

    More about InviZible Pro  

    

    Good alternative?Is InviZible Pro a good alternative to Portmaster?

     

    |

    1comment

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    InviZible Pro vs Portmaster Comments

    Positive comment by RemovedUser · May 6, 2024

    Even though the firewall for this is less sophisticated, I still think it's a good alternative because of the dnscrypt protocol and anonymizing proxies. They're both "swiss-army knives" when it comes to privacy, but it's implemented in slightly different ways.

    1 of 1 comments

    

    

    • InviZible Pro is Free and Open SourcePortmaster is Freemium and Open Source
    • InviZible Pro is a Privacy Tool Portmaster is a Firewall
11. 

    

    OpenSnitch

     47 likes

    GNU/Linux firewall enabling interactive outbound network filtering, outbound application control, blocking of ads and malware domains, centralized GUI node management, input policy configuration, SIEM integration, real-time alerts, and user-level rule customization.

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application typeApplication types

    • Firewall
    • Network Monitor

    Origin

    • Italy
    • EU

    Platforms

    • Linux

    • Italy
    • EU

    

    More about OpenSnitch  

    

    Good alternative?Is OpenSnitch a good alternative to Portmaster?

     

    |

    1comment

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    OpenSnitch vs Portmaster Comments

    Positive comment by Alx84 · Feb 4, 2024

    OpenSnitch is much more superior to any other software, especially astro-turfed Portmaster. Portmaster doesn't detect even a fraction of what is actually happening on your system, whereas OpenSnitch catches it all. It's an application firewall everyone should have! You'll be amazed how many stuff pretending-to-be-FOSS software is phoning home on you.

    1 of 1 comments

    

    

    • OpenSnitch is Free and Open SourcePortmaster is Freemium and Open Source
12. 

    

    LuLu

     56 likes

    Free shared-source firewall for macOS blocking unknown outbound connections unless approved, alerts for unauthorized activity, helps detect malware, blocks OS or app data transmissions, no ads or tracking, audit-ready code on GitHub, enterprise event monitoring.

    20 LuLu alternatives

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application typeApplication types

    • Firewall
    • Network Monitor

    Origin

    • United States

    Platforms

    • Mac

    • United States

    

    

    

    +2

    

    More about LuLu  

    

    Good alternative?Is LuLu a good alternative to Portmaster?

     
13. 

    

    Minimal Firewall

     15 likes

    Minimal Firewall is a portable Windows firewall frontend that alerts users to internet connections without requiring custom kernel modifications or disabling core isolation, striking a balance between TinyWall's security and SimpleWall's functionality.

    Cost / License

    • Free
    • Open Source (AGPL-3.0)

    Application typeApplication types

    • Firewall
    • Network Monitor

    Origin

    • United States

    Platforms

    • Windows

    • United States

    

    

    

    +3

    

    More about Minimal Firewall  

    

    Good alternative?Is Minimal Firewall a good alternative to Portmaster?

     
14. 

    

    Gufw

     52 likes

    Gufw is an easy, intuitive way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others! Gufw is powered by Uncomplicated Firewall (ufw).

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application type

    • Firewall

    Origin

    • Spain
    • EU

    Platforms

    • Linux
    • Python

    • Spain
    • EU

    

    

    

    More about Gufw  

    

    Good alternative?Is Gufw a good alternative to Portmaster?

     
15. 

    

    Firewalld

     5 likes

    Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges and IP sets.

    Cost / License

    • Free
    • Open Source (GPL-2.0)

    Application type

    • Firewall

    Origin

    • International

    Platforms

    • Linux

    • Global

    

    More about Firewalld  

    

    Good alternative?Is Firewalld a good alternative to Portmaster?