A Windows endpoint security app combining YARA rules, PE machine-learning inference, signature checks, optional cloud analysis, and a kernel minifilter driver.
58250YARAOtherUpdated 3 days ago
1 alternative
Best open-source alternatives to Microsoft Defender (2026)
Looking for a free, open-source alternative to Microsoft Defender? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| 87owo/PYAS | ★ 582 | Other | 3 days ago |
FAQ
- Is there a free, open-source alternative to Microsoft Defender?
- Yes. The most popular open-source alternatives to Microsoft Defender on Repolode are PYAS.
- Which Microsoft Defender alternative should I choose?
- PYAS has the most GitHub stars and is released under Other. Compare the license and last commit of each option in the table above before choosing.