safing/portmaster — what it is and what it’s for

About the project

Portmaster is a free and open-source application firewall for Windows and Linux that intercepts packets at the kernel level and gives per-app control over network activity. It helps block trackers, ads, and malware, and supports Secure DNS.

Useful for

Block trackers and ads for all apps using built-in filter lists
Configure Secure DNS via DoH/DoT to protect against DNS spoofing
Review network history to find which app connects to a suspicious domain

README summarized by DeepSeek V4.1 Flash. Details may be inaccurate.

Why it’s trending

1 star so far today, about 6 expected by the end of the day.
Over the last two days the pace is 2.7× that of the previous week and a half.
The spike has held for 2 days in a row — not a one-off blip.
GitHub Trending Go today: #11, +20 stars.

Stars per day

Bars are daily stars, the line is the usual pace. Red marks spike days.

Numbers

Total stars: 13,811
Today: 1 · ≈ 6 by evening
Forks: 580
Issues and pull requests: 2,194
Watchers: 93
Language: Go
License: GPL-3.0
Latest release: v2.2.3 · August 14, 2026
Created: November 13, 2018
Last push: September 10, 2026

Star trust

Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.

These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.

Spotted in

September 25, 2026GitHub Trending Go today: #10, +20 stars

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README badge

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[![Seismograph](https://gitnova.dev/badge/safing/portmaster.svg?lang=en)](https://gitnova.dev/en/r/safing/portmaster)

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