JavaScript.com - A free resource for learning and developing in JavaScript

The Security Checklist - The Practical Security Checklist for Web Developers

BundlePhobia - Find the performance impact of adding a npm package to your bundle.

SafeBase - SafeBase is the interactive security portal to share your security posture, automate access to sensitive compliance information, and subscribe to vendor security program updates.

JavaScript Quiz - Check your knowledge by having fun.

WordPress Security Scanner - Check if your WordPress site has known vulnerabilities