Storybook
Storybook is an open-source tool for building UI components and pages in isolation. It allows developers to develop, test, and document UI components independently from the main application, providing a sandbox environment for visual testing and collaboration. It integrates with popular frontend frameworks like React, Vue, and Angular to streamline UI development workflows.
Developers should use Storybook when building complex user interfaces with reusable components, as it enables rapid iteration and visual testing without running the full app. It's particularly valuable in large teams for documenting component libraries, ensuring consistency, and facilitating design-system development, making it essential for projects with extensive UI requirements or design systems.