Best Open Source Cybersecurity Projects

Semgrep

A fast, open-source, static analysis tool for finding bugs and enforcing code standards.

★ 16,867 Updated: Oct 2026 Status: Active

CrowdSec

Collaborative cybersecurity solution

★ 12,392 Updated: Feb 2026 Status: Slowing

Matano

Cloud-native security data lake on AWS

★ 1,655 Updated: Jan 2025 Status: Slowing