GitBook is a tool for building elegant documentation. It provides a range of features, including multilingual support, team collaboration, and version control. GitBook stands out for its simple and user-friendly interface and strong extensibility. In terms of pricing, GitBook offers both free and paid versions, with the paid version providing more advanced features and customization options. GitBook is suitable for various writing scenarios, including technical documents, user manuals, and tutorials. Tags: Documentation, Writing, Team Collaboration.