1. Key difference 1: Development Environment vs Component Explorer CodeSandbox is primarily a development environment where you can write, edit, and test your code, while Storybook is a component explorer that allows you to isolate, develop, and showcase individual UI components.
2. Key difference 2: Live Preview vs Standalone Component With CodeSandbox, you can see a live preview of your application as you code, enabling you to quickly iterate and see changes in real time. On the other hand, in Storybook, each component is showcased in isolation, allowing you to view its behavior independently from the rest of your application.
3. Key difference 3: Integrated Package Manager vs Manual Configuration CodeSandbox has an integrated package manager that makes it easier to manage and install dependencies, whereas in Storybook, you need to manually configure and manage dependencies.
4. Key difference 4: Collaboration vs Documentation CodeSandbox provides collaboration features, allowing multiple developers to work on the same project simultaneously, while Storybook focuses more on providing detailed documentation and examples for each component in your UI library.
5. Key difference 5: Integrated Testing Environment vs UI Composition CodeSandbox includes an integrated testing environment that allows you to write and execute tests alongside your code, facilitating test-driven development. Storybook, on the other hand, provides tools for UI composition, enabling you to combine and showcase components in various configurations.
6. Key difference 6: Project-Based vs Component-Based CodeSandbox is primarily project-based, meaning you work on a complete application, while Storybook is component-based, allowing you to focus on developing and showcasing individual UI components separately from the application.

In Summary, CodeSandbox is a development environment with live preview and collaboration features, while Storybook is a component explorer emphasizing component isolation, documentation, and UI composition.