LaunchKit – Next.js SaaS Starter

LaunchKit removes the first three months of SaaS plumbing. Sign-up to paid subscription works out of the box, and every piece is typed, tested and documented so you can focus on your product.

Key features

• Email/password, magic link and Google sign-in
• Organisations with roles, invites and seat limits
• Subscription billing with Razorpay and Stripe adapters
• Usage metering and plan-based feature flags
• Admin console with impersonation and audit log
• Marketing site, blog and docs powered by MDX
• Transactional email templates
• Playwright and Vitest test suites

Tech stack

• Next.js 15
• PostgreSQL with Prisma
• Auth.js
• Tailwind CSS + shadcn/ui

Requirements

• Node.js 20+
• PostgreSQL 15+

Installation

1. Copy .env.example to .env.local and fill in the database URL and secrets.
2. Run npm install.
3. Run npm run seed to load demo data.
4. Start with npm run dev, then deploy with the included PM2 or Docker configuration.

What's included

• Full source code with comments
• Step-by-step documentation
• Demo data and seed scripts where applicable
• 12 months of author support and all future updates