Overview
Fast Unicorn is a Next.js boilerplate designed to help you launch your startup quickly.
It includes the foundational systems most products need from the beginning, so you can spend less time wiring infrastructure and more time building your core product.
Why Fast Unicorn?
Most startups do not fail because the idea is weak. They fail because shipping takes too long. Fast Unicorn removes weeks of setup work by packaging the systems that almost every serious product needs.
Key features
Everything you need to launch your SaaS product in days instead of months.
Authentication
Complete auth foundations with credentials, OAuth providers, magic links, and session management.
Payments
Stripe-ready flows for subscriptions, one-time payments, customer portal access, and webhook handling.
UI Components
Accessible interface primitives and reusable sections designed to help you ship polished product surfaces faster.
SEO and i18n
Localized routing, metadata foundations, and a structure prepared for search visibility and international products.
Email System
Transactional email support with provider-ready configuration and a structure that fits product notifications.
Performance
A modern Next.js architecture with strong defaults for loading, caching, and overall user experience.
Built-in integrations
Fast Unicorn already includes a set of integrations that cover the most common startup needs.
- NextAuth.js: for secure authentication with multiple providers.
- Stripe: for payment processing, subscriptions, and billing flows.
- Prisma with PostgreSQL: for a type-safe database layer and migrations.
- Resend and React Email: for transactional email delivery.
- next-intl: for localized routes and multi-language messaging.
- Analytics-ready foundations: for monitoring and iteration after launch.
What is configurable
The template is structured so most customization can happen without rewriting route code directly.
- Brand identity: in src/config/site.ts.
- Marketing content: in content/landing/*.json (one per locale).
- i18n messages: in messages/<locale>/*.json.
- Dashboard UI: in src/features/dashboard/.
- Environment validation: in src/env.js.
A practical rule
Start by changing config, copy, and assets before editing route components. That keeps the architecture cleaner and reduces duplicate work.
Ready to continue?
Follow these guides to move through setup in the right order.
Installation
Clone the repository, install dependencies, and get the project running on your machine.
Environment setup
Configure the required variables so auth, email, payments, and app defaults can work correctly.
Project structure
Understand how the codebase is organized before you start editing deeper parts of the app.
First customization
Apply your branding, content, and assets so the template already feels like your product.
Useful links: