Top Open-Source WAF Projects: Secure Your Website with the Best Tools

This page summarizes the projects mentioned and recommended in the original post on dev.to

Judoscale - Save 47% on cloud hosting with autoscaling that just works
Judoscale integrates with Django, FastAPI, Celery, and RQ to make autoscaling easy and reliable. Save big, and say goodbye to request timeouts and backed-up task queues.
judoscale.com
featured
CodeRabbit: AI Code Reviews for Developers
Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
coderabbit.ai
featured
  1. SafeLine

    SafeLine is a self-hosted WAF(Web Application Firewall) / reverse proxy to protect your web apps from attacks and exploits.

    Official GitHub: SafeLine Stars: 11.6K

  2. Judoscale

    Save 47% on cloud hosting with autoscaling that just works. Judoscale integrates with Django, FastAPI, Celery, and RQ to make autoscaling easy and reliable. Save big, and say goodbye to request timeouts and backed-up task queues.

    Judoscale logo
  3. ModSecurity

    ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. It has a robust event-based programming language which provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis.

    Official GitHub: ModSecurity Stars: 8K

  4. Awesome-WAF

    🔥 Web-application firewalls (WAFs) from security standpoint.

    Official GitHub: Awesome-WAF Stars: 6.1K

  5. BunkerWeb

    🛡️ Open-source and next-generation Web Application Firewall (WAF)

    Official GitHub: BunkerWeb Stars: 5.4K

  6. wafw00f

    WAFW00F allows one to identify and fingerprint Web Application Firewall (WAF) products protecting a website.

    Official GitHub: wafw00f Stars: 5.1K

  7. aaWAF

    堡塔云WAF,宝塔免费(free)的私有云网站应用防火墙(firewall),基于docker/nginx/lua开发

    Official GitHub: NAXSI Stars: 4.8K

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

Suggest a related project

Related posts

  • 5 Best Free and Open Source WAF for 2025

    5 projects | dev.to | 18 Sep 2024
  • Comparison on Six Self-Hosted WAF

    3 projects | dev.to | 26 Aug 2024
  • A powerful free and open source WAF – UUSEC WAF

    4 projects | news.ycombinator.com | 16 Mar 2025
  • Battle of the WAFs: Testing Detection and Performance Across Open-Source Firewalls

    3 projects | dev.to | 27 Aug 2024
  • Recommended free and open-source WAF for 2024.

    6 projects | dev.to | 19 Jul 2024

Did you know that Python is
the 2nd most popular programming language
based on number of references?