GitHub Codespaces - GItHub Codespaces is a hosted remote coding environment by GitHub based on Visual Studio Codespaces integrated directly for GitHub.

Hoverify - All-in-one browser extension to improve your web dev experience.

CloudShell - Cloud Shell is a free admin machine with browser-based command-line access for managing your infrastructure and applications on Google Cloud Platform.

Webflow - Build dynamic, responsive websites in your browser. Launch with a click. Or export your squeaky-clean code to host wherever you'd like. Discover the professional website builder made for designers.

CodeTasty - CodeTasty is a programming platform for developers in the cloud.

CSS Grab n' Go Editor - Visual editor for learning and quick CSS mocking