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.

Lighthouse is an open-source tool for auditing web apps and pages to collect modern performance metrics and insights on developer best practices.

A professional front-end starter template for building fast, robust, and adaptable websites or web apps, refined over a decade by a large community.

A comprehensive Node.js best practices guide covering project architecture, code style, testing, production, security, and more.

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.