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ModSecurity vs SafeLine

The same facts for both, read from GitHub every night, and the relation a person reviewed.

ModSecuritySafeLine
LanguageC++Go
LicenceApache-2.0GPL-3.0
Stars9.8k23k
Latestv3.0.17v9.4.2
Last push2026-10-032026-09-28
Release cadenceabout 33 days between releasesabout 19 days between releases
Active contributors2 commit authors on the default branch in the last 90 days8 commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace Cloudflare WAF. Alternatives to Cloudflare WAF →

    PartialModSecurityWAF engine for nginx, Apache and IIS on your own servers, used with a rule set such as the OWASP CRS.

    Full replacementSafeLineReverse proxy WAF with a web console, rate limiting and bot challenges, in front of your own sites.