Free
Free
Open-source WAF engine with free downloads; no commercial subscription is sold on the project site.
- Access
- Open-source WAF engine with free downloads; no commercial subscription is sold on the project site.
ModSecurity pricing
● Identity checkedSecurity · Vendor site 2026-10-04
ModSecurity is an open-source web application firewall module for Apache, Nginx, and IIS that inspects HTTP traffic against a rule language. The OWASP-maintained project pairs with rule sets such as OWASP CRS to block common web attacks without rewriting application code.
- Category
- Security
- Free access
- Open-source WAF engine with free downloads; no commercial subscription is sold on the project site.
- API access
- Rule language and module APIs are documented for integrators; no hosted SaaS API keys are offered.
Understand the total cost
ModSecurity pricing & plans
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
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