Open source security projects
Every project in the registry tagged security, ranked by real GitHub adoption.
Find vulnerabilities, misconfigurations, secrets, SBOM in containers, Kubernetes, code repositories, clouds and more
Advanced vulnerability detection and management platform
The official NGINX Open Source repository.
Set up a personal VPN in the cloud
Cross-platform, secure password manager
Simple and flexible tool for managing secrets
SafeLine is a self-hosted WAF(Web Application Firewall) / reverse proxy to protect your web apps from attacks and exploits.
open-source agentic AI data assistant for the next generation of AI + Data products.
Zero Trust VPN solutions for secure business networking
Agent-less vulnerability scanner for Linux, FreeBSD, Container, WordPress, Programming language libraries, Network devices
Firefox user.js for optimal privacy and security. Your favorite browser, but better.
Fast, flexible VPN replacement with zero-trust security
🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH.
Unified Policy as Code
Gather and update all available and newest CVEs with their PoC.
Secure email, calendar and contacts with end-to-end encryption
WiFi security auditing tools suite
OWASP dependency-check is a software composition analysis utility that detects publicly disclosed vulnerabilities in application dependencies.
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata comm
AI Agent Governance Toolkit — Policy enforcement, zero-trust identity, execution sandboxing, and reliability engineering for autonomous AI agents. Covers 10/10
Secure password management for teams
Self-hosted cloud platform with automated security
The AWS exploitation framework, designed for testing the security of Amazon Web Services environments.
Cameradar hacks its way into RTSP videosurveillance cameras
Open-Source Unified Vulnerability Management, DevSecOps & ASPM
OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis, file integrity checking, policy monitoring, rootkit detection, real-ti
Aya is an eBPF library for the Rust programming language, built with a focus on developer experience and operability.
A WiFi security auditing software
secure multiplexed execution paths for agents - zero trust, zero setup, zero latency.
Secure internet sharing made simple.
Hubble - Network, Service & Security Observability for Kubernetes using eBPF
Knock Subdomain Scan
scanner detecting the use of JavaScript libraries with known vulnerabilities. Can also generate an SBOM of the libraries it finds.
Open source security automation platform for builders
Container Image Linter for Security, Helping build the Best-Practice Docker Image, Easy to start
lightweight, dependency-free bash script for security, performance auditing and infrastructure monitoring of Linux servers.
Modern, privacy-friendly, and detailed web analytics that works without cookies or JS.
:lock: Memorable site for testing clients against bad SSL configs.
Pentest Report Generator
Single Sign-On for Your Self-Hosted Universe
Next-Gen CAPTCHA and Spam Protection, GDPR compliant
Terminal security for developers and AI agents. Intercepts homograph URLs, pipe-to-shell, ANSI injection, obfuscated payloads, data exfiltration, and malicious
Patch-level verification for Bundler
Find security vulnerabilities, compliance issues, and infrastructure misconfigurations early in the development cycle of your infrastructure-as-code with KICS b
Red Team's SIEM - tool for Red Teams used for tracking and alarming about Blue Team activities as well as better usability in long term operations.
HardeningKitty and Windows Hardening Settings
ARTEX 한국어판 · AI 자율 침투 테스트 프레임워크(upstream: Autumn-27/ARTEX, AGPL-3.0)
The SpotBugs plugin for security audits of Java web applications and Android applications. (Also work with Kotlin, Groovy and Scala projects)
An NFC research toolkit application for Android
A cryptographically verifiable code review system for the cargo (Rust) package manager.
ToolHive is an enterprise-grade platform for running and managing Model Context Protocol (MCP) servers.
Fix Inventory helps you identify and remove the most critical risks in AWS, GCP, Azure and Kubernetes.
Get audit-ready for SOC 2, ISO 27001, HIPAA, and GDPR
Tool that monitors, analyzes and limits the bandwidth of devices on the local network without administrative access
HardeningKitty - Checks and hardens your Windows configuration
safely install npm packages by auditing them pre-install stage
🧵 CLI tool for directly patching container images!
Industry-leading free, high-performance, AI and semantic technology Web Application Firewall and API Security Gateway (WAAP) - UUSEC WAF.
grep rough audit - source code auditing tool
A next generation version of enum4linux (a Windows/Samba enumeration tool) with additional features like JSON/YAML export. Aimed for security professionals and
Related tags
Frequently asked questions
How many open source security projects are there?
This registry tracks 89 projects tagged security, with 499,926 GitHub stars between them. The most-adopted is trivy at 38,902 stars.
Are these security projects free to use?
Yes — 84 of the 89 carry an explicit open-source licence across 9 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which security project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these security projects still maintained?
74 of the 89 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.