Naxsi AlternativesWeb Application Firewalls and other similar apps like Naxsi

Naxsi has been discontinued. Similar apps include BunkerWeb, which is free and open source. Other options are UUSEC WAF, ModSecurity and open-appsec. In total there are four Web Application Firewalls like Naxsi for Linux, self-hosting, the web, Mac and Windows.

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Naxsi alternatives page was last updated Aug 1, 2025

BunkerWeb
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BunkerWeb is a next-generation and open-source Web Application Firewall (WAF).
67 BunkerWeb alternatives
Cost / License
Free
Open Source (AGPL-3.0)
Application typeApplication types
Reverse Proxy
Web Application Firewall
Origin
France
EU
Platforms
Self-Hosted
Good alternative?Is BunkerWeb a good alternative to Naxsi?
UUSEC WAF
1 like
Industry-leading free, high-performance, AI and semantic technology Web Application Firewall and API Security Gateway (WAAP) - UUSEC WAF.
Cost / License
Free
Open Source (BSD-2-Clause)
Application type
Web Application Firewall
Platforms
Online
Self-Hosted
Linux
Software as a Service (SaaS)
Good alternative?Is UUSEC WAF a good alternative to Naxsi?
ModSecurity
2 likes
ModSecurity is an open source web application firewall. Working embedded in the web server, or standalone as a network appliance, it detects and prevents attacks against web applications.
12 ModSecurity alternatives
Cost / License
Free
Open Source (Apache-2.0)
Origin
United States
Platforms
Mac
Windows
Linux
BSD
Self-Hosted
Good alternative?Is ModSecurity a good alternative to Naxsi?
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.
Cost / License
Free
Open Source (Apache-2.0)
Application type
Web Application Firewall
Platforms
Linux
Good alternative?Is open-appsec a good alternative to Naxsi?