FounderKit is a production-ready Next.js 16 boilerplate with everything you need to ship a SaaS fast. → Auth with Clerk (OAuth, magic links) → Stripe subscriptions + webhooks → Admin panel with MRR stats → React Email templates (4 transactional emails) → MDX Blog → Dynamic OG images → Waitlist mode → Demo mode $99 one-time. Full source code. 30 min setup. Built as a better, cheaper alternative to ShipFast ($199).