Zaproxy
Zaproxy is a free, open-source security and privacy app for Windows, macOS and Linux. The ZAP by Checkmarx Core project. It has 16,054 GitHub stars and is released under the Apache-2.0 license. Its source code is on GitHub at zaproxy/zaproxy.
github.com/zaproxy/zaproxy (opens in a new tab)
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About Zaproxy
The Zed Attack Proxy (ZAP) by Checkmarx is the world’s most widely used web app scanner. Free and open source. A community based GitHub Top 1000 project that anyone can contribute to.
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Is Zaproxy free and open source?
Yes. Zaproxy's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Zaproxy?
Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: v2.17.0) or the project website.
Is Zaproxy still maintained?
The repository's most recent commit was on Oct 27, 2026. appsgit only lists apps whose repository had a commit in the last six months.