Top 4 C++ Waf Projects

ModSecurity

19 7,558 8.2 C++

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx that is developed by Trustwave's SpiderLabs. It has a robust event-based programming language which provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis. With over 10,000 deployments world-wide, ModSecurity is the most widely deployed WAF in existence.
openrasp

1 2,685 5.5 C++

🔥Open source RASP solution
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
source-engine

16 1,030 7.9 C++

Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses

Project mention: Modified source engine (2017) developed by valve and leaked in 2020 | news.ycombinator.com | 2023-10-28

openappsec

23 651 8.8 C++

open-appsec is an open-source machine learning security engine that preemptively and automatically prevents threats against Web Application & APIs. It is available for NGINX, NGINX Ingress, Envoy (Soon), Kong (Soon), Ambassador (Soon).

Project mention: Seeking contributors for a security open-source project | /r/developersIndia | 2023-09-16

If someone in the community is interested in doing these projects, we will be happy to guide and help you. The contributions guidelines are available here: https://github.com/openappsec/openappsec/blob/main/CONTRIBUTING.md

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-10-28.