Best Open Source Alternatives to Microsoft Defender for Endpoint

Compare the best free and open-source alternatives to Microsoft Defender for Endpoint — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 3 alternatives

Microsoft Defender for Endpoint

Proprietary SaaS

PricingPaid

Platformswindows, macos, linux, ios, android

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Microsoft Defender for Endpoint alternatives compared

Open-source alternatives to Microsoft Defender for Endpoint, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Osquery	23,418	Apache-2.0	LinuxmacOSWindows	No	Jul 2026	Visit
Wazuh	16,375	GPL-2.0	LinuxDocker	Yes	Aug 2026	Visit
OpenEDR	0	Apache-2.0	WindowsLinux	No	—	Visit

Top open-source Microsoft Defender for Endpoint alternatives

Osquery23,418Apache-2.0

SQL-powered operating system instrumentation and monitoring.

LinuxmacOSWindows

vs Microsoft Defender for Endpoint: a free, open-source option you fully control, licensed Apache-2.0.

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Wazuh16,375GPL-2.0

Free security monitoring and endpoint protection solution.

LinuxDocker

vs Microsoft Defender for Endpoint: a free, open-source option you fully control, licensed GPL-2.0.

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OpenEDR0Apache-2.0

Free Endpoint Detection and Response telemetry agent.

WindowsLinux

vs Microsoft Defender for Endpoint: a free, open-source option you fully control, licensed Apache-2.0.

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