Bullet Train

Bullet Train Overview

Bullet Train is a web SaaS boilerplate built with Rails. It is written in Ruby and uses PostgreSQL for data storage. Payments and subscriptions are handled through Stripe. Priced at free, Bullet Train helps developers skip weeks of boilerplate work — authentication, billing, database setup, and deployment configuration are ready out of the box, so you can focus on the features that make your SaaS unique.

Bullet Train is a comprehensive Ruby on Rails SaaS framework created by Andrew Culver, offering a complete foundation for building modern web applications. This MIT-licensed solution integrates seamlessly with Stripe for payments, features full authentication systems, and includes advanced team management capabilities, allowing developers to focus on building unique features rather than reinventing common functionality.

Since 2017, Bullet Train has empowered developers and entrepreneurs to reduce development time by months. The framework maintains complete test coverage through automated system tests and features a modern CI/CD pipeline with CircleCI integration. Regular updates are delivered through Ruby gems, ensuring your application stays current with the latest features and security patches.

Ideal for entrepreneurs and development teams looking to launch SaaS products quickly, Bullet Train excels in scenarios requiring robust user management, subscription handling, and scalable infrastructure. Its Super Scaffolding system generates production-ready views and controllers, while the integrated REST API supports seamless third-party integrations.

Technical benefits include blazing-fast asset compilation with esbuild and PostCSS, built-in reactivity through ActionCable, and comprehensive internationalization support. The framework's modular architecture allows for easy customization while maintaining a solid foundation of best practices and security measures.