Portmaster
Portmaster is a free, open-source security and privacy app for Windows and Linux. Love Freedom - Block Mass Surveillance. It has 13,995 GitHub stars and is released under the GPL-3.0 license, and people use it instead of GlassWire and Little Snitch.
github.com/safing/portmaster (opens in a new tab)
Data as of from the GitHub API; description from the project's repository. Report an error
About Portmaster
Portmaster is a free and open-source application firewall that does the heavy lifting for you. Restore privacy and take back control over all your computer's network activity.
Replaces
Commercial software people commonly use Portmaster instead of.
- GlassWire
- Little Snitch
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Is Portmaster free and open source?
Yes. Portmaster's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Portmaster?
Download the installer for Windows and Linux from its GitHub Releases page (latest: v2.2.3) or the project website.
Can Portmaster replace GlassWire?
Portmaster is commonly used as a free alternative to GlassWire and Little Snitch. Features differ, so check that it opens the file formats and covers the workflows you rely on before switching.