Open Source Cloudflare AlternativesCDNs & Web Application Firewalls like Cloudflare

The best open source alternative to Cloudflare is Anubis. It's not free, so if you're looking for a free alternative, you could try Anubis or Duck DNS. If that doesn't suit you, our users have ranked more than 50 alternatives to Cloudflare and 11 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Cloudflare are Haproxy, NetGoat, FastNetMon and open-appsec.

filter to find the best alternatives

Cloudflare alternatives are mainly Web Application Firewalls, but if you're looking for Reverse Proxy Servers or Web Servers you can filter on that. Other popular filters include Free, Open Source, EU and Self-Hosted. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Cloudflare.
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Alternatives list

  1. Anubis icon

    Anubis

     16 likes

    Applies sha256 proof-of-work challenges to incoming HTTP requests, targeting AI crawlers, bots that ignore robots.txt, and automated scrapers, protecting server resources and preventing unwanted search engine indexing for privacy-focused sites.

    48 Anubis alternatives

    Cost / License

    • Free Personal
    • Open Source (MIT)

    Application type

    Platforms

    • Self-Hosted
    • Go (Programming Language)
    • Docker
    Anubis screenshot 1
     
  4. BunkerWeb icon

    BunkerWeb

     8 likes

    BunkerWeb is a next-generation and open-source Web Application Firewall (WAF).

    58 BunkerWeb alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
     
    |
    1
    Comments about BunkerWeb as an Alternative to Cloudflare
    Guest
    Positive
    0

    Best on Prem alternative so far

    Review by a new / low-activity user.
    BunkerWeb icon
    BunkerWeb icon
    • BunkerWeb is Free and Open SourceCloudflare is Freemium and Proprietary
    • BunkerWeb is LightweightCloudflare is not according to our users
  5. Haproxy icon

    Haproxy

     18 likes

    HAProxy is free, open source software that provides a high availability load balancer and proxy server for TCP and HTTP-based applications that spreads requests across multiple servers.

    32 Haproxy alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    Live demo
     
  6. NetGoat icon

    NetGoat

     3 likes

    A Cloudflare alternative for local and cloud use, can be used ontop of cloudflare for cloudflares paid features, but for free!.

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application type

    Platforms

    • Self-Hosted
    NetGoat screenshot 1
     

  7. FastNetMon

     2 likes

    FastNetMon is a very fast DDoS analyzer with sflow/netflow/mirror support.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Self-Hosted
    • Perl
    FastNetMon screenshot 1
     
  9. open-appsec icon

    open-appsec

     Like

    open-appsec (openappsec.io) in an open-source initiative that builds on machine learning to provide pre-emptive web app & API threat protection against OWASP-Top-10 and zero-day attacks.

    Cost / License

    Application type

    Platforms

    • Linux
    Machine Learning Engine
     
  10. SafeLine icon

    SafeLine

     2 likes

    SafeLine is a docker-based, easy to use, self-hosted free web application firewall (WAF) that protects web apps by filtering and monitoring HTTP traffic between a web application and the Internet.

    13 SafeLine alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Docker
    SafeLine screenshot 1
     
  11. coraza icon

    coraza

     2 likes

    Coraza is an open source, enterprise-grade, high performance Web Application Firewall (WAF) ready to protect your beloved applications. It is written in Go, supports ModSecurity SecLang rulesets and is 100% compatible with the OWASP Core Rule Set v4.

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Go (Programming Language)
    coraza screenshot 1
     
  12. OneClickCDN icon

    OneClickCDN

     Like

    A one-click shell script to set up a CDN node for your websites.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    OneClickCDN screenshot 1
     

  13. HaGeZi DNS

     Like

    HaGeZi DNS offers free, non-commercial public DNS resolvers designed and operated by a private individual for the European community. It provides robust DNS-based blocking of ads, trackers, scam, phishing, fake, and malware domains - helping users achieve greater privacy and...

    Cost / License

    Platforms

    • Online
     
11 of 11 Cloudflare alternatives