supastarter
Commercial TypeScript SaaS kit, sold per framework as a one-time license
- Best for
- A solo founder or small team building a multi-tenant B2B SaaS in TypeScript who wants orgs, billing, and i18n working on day one and will build inside the kit's architecture, not around it.
- Skip if
- You want to read the source before paying, or you might switch frameworks later - the repo is private until purchase and each license covers exactly one framework version.
supastarter is a paid, closed-source starter from Jonathan Wilke that ships a Turborepo monorepo with a marketing site and a SaaS app side by side. The SaaS half covers auth via better-auth (email/password, magic link, OAuth, roles, super-admin), organizations with role-based invites, and billing wired to five different providers — Stripe, Lemon Squeezy, Polar, Creem, and Dodo. Underneath sits a Hono + oRPC API layer with TanStack Query and OpenAPI generation, Prisma or Drizzle against Postgres/MySQL/SQLite, S3-compatible storage with presigned uploads, React Email templates, and background jobs through trigger.dev, QStash, or BullMQ. It's currently sold per framework — Next.js, Nuxt, or TanStack Start — as a one-time license starting at $299 for a single developer; a SvelteKit version is documented but was not offered in the purchase flow as of this review.
Pros
- Multi-tenancy is in the box, not bolted on: organizations, owner/member roles, and invite flows ship as first-class parts of the app, which is where most cheaper kits leave you writing the hard part yourself.
- Five payment providers are supported rather than one, so you aren't locked to Stripe if you need a merchant of record for VAT handling — Lemon Squeezy, Polar, Creem, and Dodo are all wired up with subscriptions, one-time purchases, paywall components, and webhooks.
- Internationalization is real and not aspirational: next-intl wired through the marketing site, the app, and mail templates, with English, German, Spanish, and French shipping as supported locales by default.
- It's built for people using AI coding agents — the repo ships AGENTS.md and Agent Skills specs, and the docs are downloadable as markdown or a zip so you can feed them to Claude Code or Cursor.
Cons
- The per-framework license is the sharpest edge. $299 buys one developer, one framework. A five-person team on two stacks is looking at two $799 purchases, and there's no upgrade path between framework versions.
- You buy blind. There's no public repository, so no stars, no commit history, no way to judge code quality or how alive the project actually is before you pay — you're going on the live demo, the docs, and the vendor's own changelog.
- The breadth cuts both ways. A Turborepo monorepo fronted by an oRPC/Hono abstraction layer is a lot of structure to absorb, and the small amount of independent commentary that exists as of this review (Aug 2026) repeatedly flags it as slow to learn and opinionated to bend once you step off the defaults.
- There's almost nothing independent written about it. As of Aug 2026 we found no substantive Reddit or Hacker News discussion, nothing on G2 or Capterra, and a small handful of Product Hunt reviews leaning positive — most of what turns up is either the maker's own build-in-public posts or affiliate directory pages recycling the same superlatives. Treat the positive signal as unproven, not as consensus.
Features
Auth and access
- Auth included
- Social login
- Magic link
- Passkeys
- Two-factor
- RBAC / roles
- Multi-tenant
- Teams / orgs
- Invitations
- Impersonation
Payments and billing
- Payments included
- Subscriptions
- One-time payments
- Usage-based billing
- Customer portal
- Paywall
AI capability
- AI chat
- Model-agnostic
AI-friendliness
- AGENTS.md
- llms.txt
- Typed end-to-end
What's in the box
- Landing page
- Admin dashboard
- User dashboard
- Blog / CMS
- Docs site
- Pricing page
- Changelog
- Onboarding flow
- Email templates
- File uploads
- API routes
Data and infra
- Background jobs
- Cron scheduling
- File storage
- Migrations
Growth and ops
- SEO-optimized
- Sitemap generation
- i18n
- Dark mode
- Analytics integrated
- Error monitoring
Quality and DX
- ESLint + Prettier
- Monorepo
- Written docs
- Discord community
Licensing and commercial
- Source-available
- One-time license
- Unlimited projects
- Lifetime updates
- Team license
- Resale prohibited
Alternatives
IndieKit
Next.js 16 SaaS starter with a free MIT tier and closed-source paid Pro
from $79
Carrot Seed
Multi-platform starter for web, mobile, and desktop apps
ShipFast
Closed-source Next.js SaaS kit from indie hacker Marc Lou