VelocityKit

VelocityKit is a production-ready SaaS starter kit built for AI-native founders who want to ship fast without cutting corners. It comes with auth, billing, analytics, and AI integrations already wired together the way experienced teams actually build — no glue code, no guesswork. Built on Next.js 16, Supabase, Stripe, PostHog, Tailwind 4, and the Vercel AI SDK, VelocityKit includes everything you need out of the box: Stripe Checkout and subscriptions, Supabase Auth with SSR, team roles, email via Resend, custom domains, blog and changelog with MDX, dark mode, 8 theme variants, E2E testing with Playwright, and 20+ SaaS prompts for Claude Code, Cursor, and Copilot. A single onboarding script configures your brand, environment variables, and product documentation in under 5 minutes. Stop rebuilding infrastructure on every project — start shipping.