The closed-source SaaS starter kit.
Auth, multi-tenancy, billing across three providers, email, observability, audit, and the marketing chrome — everything you need to ship a new SaaS product without rebuilding plumbing.
Eight modules, one PR each.
Auth
BetterAuth: email + pw, social, magic link, 2FA TOTP.
Multi-tenant
Path-based `/[orgSlug]/...` + ALS context + lint-enforced isolation.
Billing — 3 providers
Polar (recurring), PayPal + Sepay (one-time, USD/VND).
UI library
20 primitives + 7 composites + 7 layouts on Tailwind v4 + Radix.
Email + notifications
Resend + React Email + in-app bell with ETag-cached polling.
Observability
Pino + Sentry + PostHog, env-gated for clean local dev.
Audit + admin
Transactional audit trail + super-admin console with impersonation.
Content + SEO
Velite blog/changelog/legal + Fumadocs + dynamic OG + Lighthouse CI.
Built onNext 16React 19Drizzle + Postgres 18Turborepopnpm 10TypeScript strictTailwind v4Vitest 4
Frequently asked
Ship the next SaaS, not the plumbing.
Start free. Upgrade per organization when you need more.