Supastarter

Overview

supastarter is a premium Next.js SaaS starter kit that ships authentication, billing, organizations, i18n, a typed API, AI workflows and a marketing site already wired together. It is sold as a one-time purchase with lifetime access, in Solo, Startup and Agency plans, and the site says it is used by more than 1,500 developers.

The codebase is a Turborepo monorepo with separate apps for marketing, the SaaS app, docs and mail previews, plus shared packages for auth, database, payments, storage, mail, i18n and UI. It follows the AGENTS.md and Agent Skills specifications so coding agents such as Cursor, Claude Code and Codex can extend it. The UI is shadcn/ui compatible, built on Tailwind CSS and Base UI.

Features

• Authentication: better-auth with password, passkeys, magic links, OAuth, 2FA, roles, super admin and impersonation.
• Payments: Stripe, Lemon Squeezy, Polar, Creem and Dodo Payments, with subscription, one-time, usage-based and seat-based billing.
• Organizations: Multi-tenant orgs with invites and member roles that can be required, hidden or removed.
• Typed backend: Prisma or Drizzle, a Hono and oRPC API with permissions, OpenAPI specs and TanStack Query client.
• AI workflows: Multiple AI adapters and an included chatbot example.
• Marketing and content: Landing page, MDX blog, Fumadocs-powered docs, legal pages, SEO with sitemap, and a contact form.
• Operations: Background jobs via trigger.dev and QStash, Sentry monitoring, Playwright E2E tests and a Docker Compose offline setup.
• i18n and mail: Translations, a language switcher and translatable transactional email templates.

Tech stack

• Next.js 16, React, TypeScript, Turborepo, pnpm
• Tailwind CSS, Base UI, shadcn/ui compatible components
• better-auth, Prisma or Drizzle, Hono, oRPC, TanStack Query