The standout features of CodeSandbox include its instant setup, seamless collaboration with real-time editing, built-in package management, support for multiple languages and frameworks, live preview for instant feedback, and integration with version control systems like GitHub. Its accessibility as a web-based platform adds to its versatility.

The ease of setting up space(s) for learning and testing different ideas.

1.That is the most favorite Web-Based IDE for Developers. 2.CodeSandbox provides an integrated development environment in our browser. 3.With CodeSandbox, work with so many languages and frameworks, like JavaScript, React, Vue.js, Angular, and more. 4.Able to add dependencies easily and manage them within the CodeSandbox environment directly. 5.Able to see a live preview of our application in a separate window or panel. This displays the immediate effects of code changes in the live preview. 6.Easy to use and easy to implement and integrate, so that's why I use this frequently.