Next SaaS StartervsOpen SaaS

Next SaaS Starter (free, by Lee Robinson of Vercel) and Open SaaS (free, by Wasp) are two of the most popular free open source SaaS starters in 2026, but they're built on entirely different philosophies. Next SaaS Starter is a minimal Next.js + Drizzle + NextAuth template optimized for Vercel deployment. Open SaaS uses the Wasp framework — a declarative full-stack language built on top of React and Node.js — with Stripe, OpenAI integration, and a full admin dashboard pre-wired.

The architectural difference is dramatic. Next SaaS Starter is conventional: Next.js App Router, Drizzle ORM over PostgreSQL, NextAuth for authentication. You know how it works because you know how Next.js works. Open SaaS adds an abstraction layer — Wasp defines your full-stack app declaratively (routes, auth, database operations) in `.wasp` files, then generates the React + Node.js code underneath. Wasp's promise is less boilerplate: authentication, database access, and API routes are declared in a few lines rather than wired up manually. The tradeoff is that Wasp is a non-standard tool — there are fewer community resources, Stack Overflow answers, and examples compared to the Next.js ecosystem.

Feature parity heavily favors Open SaaS. Next SaaS Starter is intentionally minimal — authentication, Stripe subscriptions, a basic dashboard, and a landing page. It's a solid foundation that leaves most product features to you. Open SaaS includes Stripe subscriptions AND one-time payments, an admin dashboard with user management, OpenAI integration (GPT-4 ready), email with Mailgun/SendGrid, file upload support, blog, and a guest blog post mode. For a developer who wants to start with the most features already wired, Open SaaS delivers significantly more value despite being free.

The Vercel integration in Next SaaS Starter is seamless — it's built by Lee Robinson, who works at Vercel, and it deploys to Vercel's infrastructure with a single click. Open SaaS deploys to Fly.io with a Docker-based workflow, which is more flexible but slightly more manual. For developers who want the simplest possible Vercel deployment, Next SaaS Starter wins.

Choose Next SaaS Starter if you want the most conventional Next.js foundation with the easiest Vercel deployment and a minimal codebase you can understand completely in an afternoon. Choose Open SaaS if you want the most feature-complete free SaaS starter available — Wasp's abstractions are worth learning for the amount of functionality you get pre-wired, and OpenAI integration out of the box is a genuine differentiator in 2026.