Open Source Cloudflare AlternativesCDNs & Web Application Firewalls like Cloudflare

The best open source alternative to Cloudflare is Duck DNS. If that doesn't suit you, our users have ranked more than 50 alternatives to Cloudflare and seven of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Cloudflare are Haproxy, BunkerWeb, FastNetMon and open-appsec.

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Cloudflare alternatives are mainly Web Application Firewalls but may also be CDNs or Dynamic DNS Services.  Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Cloudflare.
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  • Freemium • Proprietary
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Cloudflare is a software-as-a-service hosted front-end transparent proxy designed to be put in front of any website to block attacks of any size and type, and offer integrated DNS and CDN services.

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Cloudflare alternatives page was last updated Jan 16, 2025
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Alternatives
  1. Duck DNS icon

    Duck DNS

     46 likes
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    Free dynamic DNS hosted on Amazon VPC.

    25 Duck DNS alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    Duck DNS screenshot 1

    Duck DNS Features

    1.  Dynamic DNS

    Duck DNS VS Cloudflare

     

    • Duck DNS is the most popular Windows, Mac & Linux alternative to Cloudflare.

    • Duck DNS is the most popular Open Source alternative to Cloudflare.

    • Duck DNS is Free and Open SourceCloudflare is Freemium and Proprietary
  2. Haproxy icon

    Haproxy

     15 likes
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    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.

    28 Haproxy alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Linux
    • BSD
    Live demo

    Haproxy Features

    1.  Load balancing
    2.  HTTPS Support
    3.  High Availability
    4.  Continuous Configuration

    Haproxy VS Cloudflare

     
  4. BunkerWeb icon

    BunkerWeb

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

    50 BunkerWeb alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Self-Hosted

    BunkerWeb Features

    1.  Kubernetes
    2. Docker icon  Support for Docker
    3.  Nginx

    BunkerWeb VS Cloudflare

     

  5. FastNetMon

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

    6 FastNetMon alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Self-Hosted
    • Perl
    FastNetMon screenshot 1

    FastNetMon VS Cloudflare

     
  6. open-appsec icon

    open-appsec

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    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.

    9 open-appsec alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Linux
    Machine Learning Engine

    open-appsec Features

    1.  Nginx

    open-appsec VS Cloudflare

     
  7. SafeLine icon

    SafeLine

     1 like
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    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.

    4 SafeLine alternatives

    License model

    • Freemium • Open Source

    Application types

    Platforms

    • Self-Hosted
    • Docker
    SafeLine screenshot 1

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  No Tracking
    2.  Ad-free
    3.  No Coding Required
    4.  Two-factor Authentication
    5.  Website Monitoring
    6.  Captcha

    SafeLine VS Cloudflare

     
  9. OneClickCDN icon

    OneClickCDN

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

    17 OneClickCDN alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Linux
    OneClickCDN screenshot 1

    OneClickCDN VS Cloudflare

     
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