[opensourcedex]

best-of ranking · updated nightly

Best Open Source AI Security & Privacy Tools

Ranked by GitHub stars — actual adoption, not editorial taste. All 10 are free, open source and self-hostable; license and last activity on every entry.

  1. 1
    strix ★ 63K

    Open-source AI penetration testing tool to find and fix your app’s vulnerabilities.

    Apache-2.0 Python pushed 2026-09-17 details →
  2. 2
    shannon ★ 48K

    Shannon is an AI pentester for web applications and APIs. It analyzes your source code, identifies attack vectors, and executes real exploits to prove vulnerabi

    AGPL-3.0 TypeScript pushed 2026-09-08 details →
  3. 3
    SkillSpector ★ 18K

    Security scanner for AI agent skills. Detect vulnerabilities, malicious patterns, security risks, prompt injection, data exfiltration, and supply-chain risks in

    Apache-2.0 Python pushed 2026-09-17 details →
  4. 4
    iFixAi ★ 15K

    Independent Auditing of AI Agents. Run by human or the agent itself, to answer the most crucial question in the AI Agent Economy. Is the agent doing what is sup

    Apache-2.0 Python pushed 2026-09-16 details →
  5. 5
    codex-security ★ 11K

    OpenAI's Codex Security CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities. npm: https://www.npmjs.com/package/@openai/codex-se

    Apache-2.0 TypeScript pushed 2026-09-17 details →
  6. 6
    garak ★ 9.3K

    the LLM vulnerability scanner

    Apache-2.0 Python pushed 2026-09-16 details →
  7. 7
    AI-Infra-Guard ★ 6.4K

    A full-stack AI Red Teaming platform securing AI ecosystems via Agent Scan, Skills Scan, MCP scan, AI Infra scan and LLM jailbreak evaluation.

    Apache-2.0 Python pushed 2026-09-17 details →
  8. 8
    giskard-oss ★ 5.8K

    🐢 Open-Source Evaluation & Testing library for LLM Agents

    Apache-2.0 Python pushed 2026-09-16 details →
  9. 9
    Agentic-Bug-Hunter ★ 4.9K

    AI-powered bug bounty hunting toolkit that works with or without subscription.

    MIT Python pushed 2026-09-17 details →
  10. 10
    nono ★ 4.1K

    secure multiplexed execution paths for agents - zero trust, zero setup, zero latency.

    Apache-2.0 Rust pushed 2026-09-17 details →
method stars desc · snapshot from github api refresh nightly related AI Interaction & Interfaces, AI Development Platforms, Machine Learning Infrastructure

Related best-of lists

best AI Interaction & Interfaces →best AI Development Platforms →best Machine Learning Infrastructure →

last updated nightly · ranking method: github stars, live-tracked

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Frequently asked questions

What is the best open source AI Security & Privacy tool in 2026?

strix leads the ranking with 63,281 GitHub stars, ahead of shannon. Rankings use live GitHub star counts, refreshed nightly.

How is this list of AI Security & Privacy tools ranked?

By GitHub stars — a proxy for adoption and community size. Each entry also shows its licence, primary language and last commit date, so you can judge maintenance activity rather than trusting the ranking alone.

Are the best AI Security & Privacy tools free?

Every project on this list is open source and free to self-host. Some also offer paid managed hosting, but the software itself carries no licence fee.