Keel - AI SaaS Starter Kit - Next.js SaaS Starter Kit Template

A production-ready starter kit for building AI SaaS products. Keel ships the boring 80% - marketing landing, pricing, full auth (login, signup, forgot/reset), a 3-step onboarding wizard, a gated app shell with sidebar and workspace switcher, a dashboard with charts and AI insights, settings, billing, team management, and notifications - so you can build the part that matters. AI is woven in, not bolted on: a full-page streaming assistant, a global 'Ask AI' slide-over, a Cmd+K command bar, dashboard insight cards, and an interactive hero demo, all driven by a keyless mock engine that streams token-by-token and swaps to Claude via the Vercel AI SDK behind a single documented seam. The 'Gilt' design system - warm gold on near-black with an editorial fold structure, Bricolage Grotesque display type, and a film-grain texture - reskins from two CSS variables. Session and billing logic are pure, unit-tested reducers; all screen data comes from a typed mock-data layer you swap for your API. Flash-free light and dark mode, fully responsive, strict TypeScript, zero backend required to run.