Fullstack SaaS Boilerplate with AI

Built with Fastify, tRPC, and React.

Project

Demo

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Preview

fsb-chat.webm

Main Stack

Technology	Description	Stars
Drizzle	A TypeScript-first ORM for Node.js
Fastify	Fast, unopinionated, minimalist web framework for Node.js
Postgres	The world's most advanced open source database
React 19	A JavaScript library for building user interfaces
Tailwind v4	A utility-first CSS framework for rapid UI development
tRPC	End-to-end typesafe APIs made easy

Other dependencies

Technology	Description	Stars
Better Auth	Authentication library for Node.js
OpenAI	API for GPT models, embeddings, and more
Phosphor Icons	Beautifully simple & consistent icons
pnpm Workspaces	Fast, disk space efficient package manager for monorepos
Playwright	Test your web apps headlessly with a single API
React Router v7	Declarative routing for React
TypeScript	TypeScript is a typed superset of JavaScript
Vite	Next generation frontend tooling. It's fast!
Zod	TypeScript-first schema validation with static type inference

Star History

Features

• Games from fanapis.com Example of pulling data from externals REST API
• Health Check for the server (http://localhost:2022/health.trpc) and (http://localhost:2022)
• Search with Debounce Using a Custom Hook
• Chat with Server-Sent Events (SSE). SSE is easier to setup and don't require setting up a WebSocket server.

Installation

• Install pnpm if you haven't already: npm install -g pnpm
• Rename the example.env files to .env with your own credentials: server, client
• Make sure Postgres is running and create a new database called fsb

psql -U user // replace user by your postgres user
CREATE DATABASE fsb;

• Run in the terminal in the root directory:

# Install the dependencies
pnpm install

# Setup the database
pnpm run push

# Seed the database
pnpm run seed

# Run the app (it will run the client and the server automatically)
pnpm run dev

Building for production

pnpm run build
pnpm run start

Printscreens

impersonateUser.webm

fsb-auth.webm

Motivation

Focusing on developer experience: simple, efficient, and fast. This modern stack uses top-tier libraries to build a full-stack web application. Unlike the T3 app (https://create.t3.gg), we opted not to use Next.js, allowing the frontend to remain as static files, easily stored in cloud object storage like AWS S3. Consequently, this stack is designed for building web apps rather than traditional websites, as it is not SEO-friendly.

End-to-end typesafe with tRPC

Video from https://trpc.io

E2E Testing

The tests should be executed while the application is running.

Running the tests in the Terminal

pnpm run test

Other recommendations

• Need a component library? Check out Chakra UI
• This project uses pnpm workspaces for fast, disk-efficient installs

Who is using FSB?

• Nachonacho.com - The world's largest marketplace for Software & Services

Create a PR if you want to add your project here.

How can you help?

This project is free and open source. If you found it useful, consider giving it a star ⭐ or sponsoring me 💖 — it really helps! I'm always open to feedback, so feel free to share suggestions to improve the stack. You’re also welcome to contribute by opening a pull request 🚀.