Nextacular
Nextacular is an open source starter kit designed to expedite the development of full-stack, multi-tenant SaaS applications. Built with modern technologies such as Next.js, Tailwind CSS, and Prisma, it offers a suite of out-of-the-box features to streamline the development process. These features include authentication via magic links and social logins through NextAuth, database integration with relational databases like PostgreSQL and MySQL, and multi-tenancy support to serve multiple customers across different subdomains or custom domains using a single unified codebase. Nextacular also provides teams and workspaces functionality, allowing users to invite team members to collaborate within workspaces. The platform includes a customizable landing page, billing and subscription management through Stripe integration, and simple design components built with Tailwind CSS that can be configured according to your design system.
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SaaS Forge
SaaS Forge is an open-source boilerplate designed to expedite the development of SaaS applications by providing a modular, ready-to-use codebase. It utilizes Python for the backend and ReactJS for the front end, incorporating JWT authentication, a RESTful API, and a database ORM integrated with PostgreSQL. The front end features a responsive design based on Bootstrap 4, with pre-built components such as login, registration, email confirmation pages, a single-page application dashboard, profile views, and a collapsible tree menu. The boilerplate includes automated imports of API endpoints, initialization of services and extensions, predefined database models with automatic updates, and customizable themes. Advanced functionalities encompass Stripe payment integration, a user administration dashboard, and social login options like Google authentication. SaaS Forge is compatible with deployment platforms such as Heroku and AWS Elastic Beanstalk.
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Advantch
Advantch's Starter Kit is a comprehensive solution designed to expedite the development and deployment of SaaS, AI, or internal products. Built with Django and React, it offers a fully featured codebase that includes user authentication, multi-tenancy support, payment processing via Stripe, and AI capabilities such as OpenAI assistants and built-in Retrieval-Augmented Generation (RAG) and chat features. The platform provides a centralized control panel for managing users, authentication, billing, and reports, and allows customization for various user bases, including teams, businesses, or individuals. Developers benefit from an optimized setup and customization process, featuring Command-Line Interface (CLI) tools, detailed documentation, guides, and examples to enhance the development experience. Build with flexibility in mind. Customize your app for teams, businesses or individuals.
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Open SaaS
Open SaaS is a fully open source, full-stack SaaS starter kit built on the Wasp framework (React + Node.js + Prisma). It comes pre-integrated with core SaaS features, including user authentication (email, Google, GitHub), payment/subscription workflows via Stripe or Lemon Squeezy, file upload support (AWS S3), analytics dashboards (Plausible or Google Analytics), and an example AI-enabled app leveraging the OpenAI API for rapid prototyping. The template emphasises end-to-end type-safety, job scheduling, background tasks, and one-command deployment (e.g., wasp deploy) across hosting platforms like Fly.io, Railway, or custom providers. The codebase is organised vertically by feature (auth, payments, client UI, server logic, e2e tests) and includes guides for SEO, testing (via Playwright), deployment, updating, and customization. The project is MIT-licensed, free to use and distribute, and designed to eliminate boilerplate so developers can focus on building product logic.
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