# safing/portmaster

> 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.

- Magnitude: 2.0 out of 10 — Steady
- Stars: 13,811 total · +1 star today, ≈ 6 by evening
- Star trust: star growth looks organic
- Category: Security · Language: Go · License: GPL-3.0 · Created: 2018-11-13 · Last push: 2026-09-25
- GitHub: https://github.com/safing/portmaster · Homepage: https://safing.io · Page: https://gitnova.dev/en/r/safing/portmaster

## 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

## Why it’s here

- 1 star so far today, about 6 expected by the end of the day.
- Over the last two days the pace is 2.6× 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.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 580
- Issues and pull requests: 2,195
- Watchers: 93
- Average over the last week: 12 per day
- Usual pace: 7 per day
- Stars in the last hour (measured): 0
- Latest release: v2.2.3 (2026-08-14)

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-08-27 … 2026-09-25: 7, 4, 5, 5, 8, 6, 8, 6, 5, 8, 8, 5, 8, 6, 6, 4, 11, 8, 1, 7, 8, 7, 4, 8, 4, 5, 8, 24, 28, 1

## Spotted in now

- GitHub Trending Go today: #11, +20 stars

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-09-25 14:45 UTC, updated every 30 minutes.