Next.js + better-auth SaaS Boilerplate
Looking for a modern Next.js + better-auth boilerplate to kickstart your SaaS or web app project? supastarter is the all-in-one starter kit that comes with full Next.js and better-auth integration — built for developers who value security, DX, and a flexible authentication flow.Next.js+better-authGet supastarter for Next.jsRead authentication docs
Authentication
Let your users sign up and login with password, magic link or oAuth.
Payments
Charge your users with subscriptions. Choose your preferred payment provider.
Internationalization
Reach more customers by making your app multilingual.
Mails
Send transactional emails to your customers.
Style
Modern, beautiful UI. Fully customizable.
API
Reusable, extensible and type-safe REST-API for your SaaS.
Database
Access your data in a type-safe way with Prisma or Drizzle.
Organizations
Let your customers create organizations, add members and share resources.
AI
Add artificial intelligence to your app and give your customers superpowers.
SaaS Blog
Multi-language, MDX-based marketing blog to keep your customers up to date with the latest news.
SaaS Analytics
Track your users and their behavior for your SaaS and marketing pages.
SaaS Landing Page
A beautiful landing page with features, pricing and newsletter signup is included.
Learn moreSaaS Onboarding
Multi-step onboarding process to help your customers get started with your app.
Learn moreSaaS Documentation
Multi-language, MDX-based documentation to help your customers get started with your app.
Learn moreContact form
Let your customers contact you.
SaaS Legal Pages
Multi-language placeholder pages for privacy policy and terms of service are included.
Fully typed codebase
From backend to frontend, we are using TypeScript for full type safety.
Cursor / Windsurf support
Cursor / Windsurf rules are included for AI code generation.
One-time purchase. Unlimited projects.
supastarter is a one-time purchase with no recurring fees. You get access to the repository and can use it for as many projects as you want.
Lifetime access
for one developer
- All features includedAuthentication, billing, user management, and more. See list of features above.
- Lifetime updatesLast update to codebase: 24 days ago
- Saves you 120+ hours
- Exclusive discord server for support
🔐 Why Use better-auth with Next.js?
better-auth is a modern, modular authentication system designed for full-stack TypeScript frameworks. It supports email/password, magic links, OAuth, and fine-grained session management — all while keeping your auth logic composable and framework-agnostic.
✅ Benefits of using better-auth with Next.js:
- Magic links and password login out of the box
- Session-based and token-based auth with fine control
- Multi-tenant ready — built for SaaS use cases
- Composable logic — works great with server actions
- First-class TypeScript support — safe, predictable APIs
When combined with Next.js, better-auth provides a secure, customizable authentication layer that integrates seamlessly with server components, API routes, and middleware.
🚀 What is supastarter?
supastarter is a production-grade boilerplate that helps you launch and scale full-stack applications using cutting-edge technologies. It's designed for speed, simplicity, and flexibility — and it's fully integrated with better-auth and Next.js out of the box.
Whether you're building a solo project or a multi-tenant SaaS, supastarter provides all the essentials — so you can focus on what matters: shipping your product.
🔧 Perfect for Modern SaaS
supastarter is built specifically for developers launching subscription-based SaaS products, internal tools, or B2B apps. Using Next.js and better-auth together gives you the ideal combination of:
- Security (modern auth patterns, session management)
- Productivity (pluggable and developer-friendly)
- Flexibility (custom providers, magic links, or passwords)
- Scalability (multi-tenant by default)
💡 Who Is This For?
- Full-stack developers who want a premium Next.js auth starter template
- SaaS founders building with magic link or email/password login
- Developers looking for a simpler alternative to Auth.js or Firebase Auth
- Anyone launching a secure, multi-tenant SaaS or internal tool
🧪 Built by Developers, for Developers
Unlike generic boilerplates, supastarter is opinionated only where it matters. You're free to bring your own database, UI system, or storage provider — or use the built-in integrations to get started fast.
With better-auth, your authentication layer is secure, flexible, and easy to extend. With Next.js, your frontend and backend live together. With supastarter, you get a complete developer platform to launch your next SaaS faster.
See what supastarter customers are building
Discover the diverse range of projects and ideas that our 800+ customers have built with supastarter.
