Web apps in pure Python, Built in a few minutes!

Build anything, faster

Create your whole app in a single language. Don't worry about writing APIs to connect your frontend and backend

Any use case

With Reflex you can build anything from internal tools and data apps to complex multi-page apps

It's just Python

The app state is just a class. State updates are methods in the class. And the UI is a reflection of the state

Write your entire app in Python [Frontend]

No more switching between languages and frameworks. Use one language for your whole stack

• 60+ built-in UI Components

  Reflex comes with a large library of UI components ranging from simple buttons to complex graphs and tables.

  Check out the full library

• Custom Components

  Create your own components in a few lines of code. Simply wrap the React component of your choice.

  Wrapping React Guide

• Completely customizable

  All Reflex components are fully customizable. Change the colors, fonts, and styles to match your project

  Styling Guide

• Now everyone can work across the full-stack

  With Reflex every engineer can work across the whole stack allowing for a more efficient and productive workflow

Skip the boilerplate and get started faster [Backend]

Reflex comes with a powerful backend built with FastAPI and SQLAlchemy

• Batteries included

  Skip the boilerplate and get started faster. Reflex integrates the frontend and backend so there is no need to write API endpoints

  State docs

• Seamlessly integrate with any Python library

  Never get locked into a framework that doesn't support your existing tech stack

• Built in database ORM

  Integrate with existing databases with a single line of code. Or use our built in SQLite database

  Database docs

What makes this work on Railway?

• Custom build plan: nixpacks.toml

  • Runs all the necessary commands to setup, initialize, export, and install Caddy
  • Starts the Reflex backend and Caddy server using parallel to avoid having to run two separate services in the project

• The Caddy Server/Proxy: Caddyfile

  • Serves the exported frontend Reflex app
  • Proxies all requests to /backend/* through to the Reflex backend server

• The api_url variable: rxconfig.py

  • Makes sure the frontend build utilizes the correct backend api url

Relevant Caddy documentation:

• The Caddyfile
• Caddyfile Directives
• reverse_proxy
• handle_errors