Snyk - Snyk helps you use open source and stay secure. Continuously find and fix vulnerabilities for npm, Maven, NuGet, RubyGems, PyPI and much more.

The Security Checklist - The Practical Security Checklist for Web Developers

Dependabot - Automated dependency updates for your Ruby, Python, JavaScript, PHP, .NET, Go, Elixir, Rust, Java and Elm.

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.

Libraries.io - :books: The Open Source Discovery Service. Contribute to librariesio/libraries.io development by creating an account on GitHub.

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