Rails UI

Category

Developer Tools

Launched

January 21, 2026

Stage

Unknown

Pricing

freemium

Founder

justalever

Website

railsui.com

Rails UI is a UI component library and app kit system built specifically for Ruby on Rails applications. It provides pre built, designed screens—such as dashboards, authentication flows, billing pages, settings, and email templates—that developers can drop into their Rails apps. The library includes over 200 components (buttons, forms, tables, modals, dropdowns, alerts, pagination, etc.) built with plain ERB, Tailwind CSS, and Stimulus JavaScript. Each component is designed to work together, so every screen inherits the same look and feel. Rails UI also offers nine themed app kits (e.g., CRM, property management, AI applications, hiring platform) that serve as starting points for specific SaaS categories. The system is open source (the core gem is on GitHub with 600+ stars) and Rails native, meaning it uses patterns like ERB, Stimulus, and Hotwire.