Full Stack Kit vs NextJet

When choosing between Full Stack Kit and NextJet, it's essential to understand the key differences that make each boilerplate unique. Both are excellent choices for building SaaS applications, but they cater to different needs and development approaches.

What is Full Stack Kit?

Full‑Stack Kit is a paid full‑stack boilerplate / template for modern web apps, built around Next.js (version 15), TypeScript, Prisma (with PostgreSQL by default, but supporting other databases), and Tailwind CSS (or comparable styling). The template aims to provide a ready‑to‑go foundation so developers don’t have to implement common boilerplate features from scratch. Full‑Stack Kit bundles typical “standard web application infrastructure”: authentication (email/password, OAuth, magic‑link), role‑based authorization, a built-in admin panel for user and content/announcement management, billing/subscriptions via Stripe (with subscription management, invoices), multi-language support (internationalization), landing‑pages/templates, user dashboards, and a set of UI/layout components for marketing pages, dashboards, and more. It’s positioned as a “launch‑fast” boilerplate: you get a structured, clean, extendable codebase with authentication, billing, UI scaffolding, admin & user management, which lets you focus on crafting the unique parts of your product rather than reinventing the foundation.

Developed by Full Stack Kit, Full Stack Kit has become a popular choice among developers looking for a reliable starting point for their SaaS projects.

What is NextJet?

NextJet is a full‑stack SaaS boilerplate built with Next.js, TypeScript and modern web‑app tooling, made to give developers a solid, production‑ready foundation when building subscription‑based or SaaS‑style applications. Out of the box it handles core infrastructure: user authentication + authorization (including OAuth and magic‑link support), payment/subscription logic via Stripe or Lemon Squeezy, and pre‑built user dashboards + admin panel. It also includes content‑management and marketing‑side features: a blog and documentation system using MDX, a customizable landing/marketing site, email templates, and onboarding flows. The project follows a modular, maintainable architecture (monorepo via Turborepo, clean folder structure, typesafety via TypeScript), which helps keep code organized, useful if you plan to grow or scale the app over time. Because much of the “plumbing” is already configured, you can skip repetitive setup and get to building your product‑specific logic faster. At the same time, using NextJet means trusting its built‑in architecture, tech stack and conventions. If your project needs a very different stack, unusual backend/data requirements or a minimal footprint, you might need to refactor or drop parts of what comes with the boilerplate.

Created by Renas Hassan, NextJet offers a robust foundation for building scalable SaaS applications.

When building a SaaS application, choosing the right payment integration is crucial for monetization success. Let's compare the payment options available in Full Stack Kit and NextJet.

Both Full Stack Kit and NextJet are excellent choices for building SaaS applications. Your decision should be based on your specific requirements, budget, and technical preferences.

Full Stack Kit is ideal if you're looking for a more affordable option with built-in authentication.

NextJet stands out for its comprehensive feature set and is perfect for developers who need authentication.

Ultimately, both boilerplates will help you launch your SaaS product faster and more efficiently. Review the detailed comparison above, consider your project requirements, and choose the one that aligns best with your goals.