TinaCMS is an open-source, Git-backed content management system designed for developers looking to create custom editing experiences. It allows content to be stored directly in a Git repository, facilitating version control and collaborative workflows. This headless CMS supports various hosting options, including self-hosting and TinaCloud, making it versatile for different project needs.

Key features include local development setup, enabling developers to run TinaCMS on their local filesystem. It also supports third-party media storage solutions, allowing users to store media assets in their repository or connect to external services like S3 or Cloudinary. The real-time visual editing feature enhances the user experience by allowing immediate feedback on content changes during the editing process.