Open source. Open possibilities.

OWASP Web Security Testing Guide is an open-source reference for testing web applications and services, with structured scenarios, versioned identifiers, stable documentation, and community contributions.

SafeLine is a self-hosted web application firewall and reverse proxy that sits in front of web apps to filter and block malicious HTTP/S traffic, offering rate limiting, bot and authentication challenges, dynamic HTML/JS encryption and access control lists.

SecureFlow is a local-first application security platform in Rust. It combines deterministic source-to-sink analysis, human validation workflows, and offline API inventorying. The tool prioritizes reproducible evidence, maintaining strict separation between automated candidates and final human judgments, with no automatic vulnerability validation.

Official repository of the OWASP Cheat Sheet Series, a flagship OWASP project offering concise, high-value guidance on specific application security topics for developers building and securing applications.