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Portmaster

The privacy app that gives you back control over all your computer's network connections.

Privacy Features

At its core, the Portmaster sits on your kernel and simply intercepts all your network connections. You decide which privacy features you want to enable or disable as you desire.

All-Round System Privacy

Since the Portmaster sits on your kernel, you can finally protect your whole computer, not just your browser. Do you want to block Ads and Analytics for your whole operating system? Or whole countries? The Portmaster has you covered.

Your kernel is a cricital part of your computer, so be encouraged to validate our claims.

Global & per‑App Configuration

Cut off apps from the Internet entirely, block system processes or limit applications to specific domains only.

With the Portmaster, your power becomes limitless.

Enforce DNS‑over‑TLS

Even with invasive connections gone, you might not want to share your dns requests out in the open. With the Portmaster, you can easily re-route all your dns queries to a DNS-over-TLS provider of your choice.

Modular Design From The Start

One shoe does not fit all. That is why you can enable or disable privacy features at your will. And the best thing? Everything is FOSS, free and open-source software.

You can use all local features free of charge as well, only the coolest one, the SPN, requires a subscription to unlock.

Download

One click install. One click uninstall.

The Portmaster is still in its early "pre-alpha" development stage. It is functional, but has not yet been tested widely. Thus, currently we expect you to have the technical knowledge to troubleshoot and fix issues on your end by yourself. Limited support is available, see below.

Support

Please report technical issues on the portmaster repository, problems with the user interface on the portmaster-ui repo and ask for help on Reddit

Check out the FAQ or ask us any question we did not answer yet.

Limited Support

These platforms are compatible, but not all functionality is implemented or tested. Probability of encountering unknown issues is high. UI components may be impaired or completely broken. Issues we know about are listed: