Better-tstack is an open-source CLI tool that allows developers to instantly scaffold TypeScript projects with their choice of frontend and backend frameworks. The tool offers both command-line prompts and a visual web builder interface where users can select technologies like Next.js, databases, authentication systems, and deployment options. It automatically generates a complete project structure with proper configurations, dependencies, and even includes features like documentation setup with Fumadoc, code formatting with Ultralight, and monorepo support with Turbo Repo.