Free SaaS Template With Next.js, Node.js and MongoDB

Building a SaaS product from scratch means solving many foundational pieces before reaching the main feature: authentication, users, protected routes, database structure, backend architecture and a usable admin panel.

SG SaaS Starter Lite is a free starter kit developed by Santiago Gretter Software Studio to accelerate that first stage.

It is designed for developers, freelancers and entrepreneurs who want to build SaaS products, admin dashboards, MVPs, CRMs, internal portals or management tools with a modern and adaptable foundation.

What SG SaaS Starter Lite includes

The project uses a fullstack structure with separate frontend and backend applications.

Frontend

The frontend includes:

• Next.js.
• React.
• TypeScript.
• TailwindCSS.
• Responsive admin layout.
• Reusable UI components.
• Basic dashboard.
• User management.
• Search, filters and pagination.
• Modals, tables, badges, empty states and toasts.

Backend

The backend includes:

• Node.js.
• Express.
• TypeScript.
• MongoDB.
• Mongoose.
• JWT authentication.
• Protected routes.
• User management.
• Basic dashboard.
• Demo seed data.

Authentication

SG SaaS Starter Lite includes a JWT authentication foundation for:

• User registration.
• Login.
• Protected routes.
• Session validation.
• Frontend logout.

This gives you a working authentication flow without having to build everything from scratch.

User management

The Lite edition includes an administrative foundation for managing users.

Available features include:

• Create users.
• Edit users.
• Delete users.
• Activate or deactivate accounts.
• Search users.
• Filter users.
• Paginate results.

The included roles are:

• admin.
• member.

Administrators can manage users, while the architecture can be extended later with additional permissions when required.

Dashboard

The included dashboard is intentionally simple.

It provides basic metrics such as:

• Total users.
• Active users.
• Inactive users.
• Quick actions.

The goal is to provide a clean starting point that developers can extend with product-specific metrics.

Demo data

The project includes a seed script to load demo users into MongoDB.

It also includes a demo administrator account:

Email:

admin@example.com

Password:

123456

These credentials are intended only for local development and testing.

Environment variables

SG SaaS Starter Lite includes example environment files for frontend and backend configuration.

Backend variables include:

• Port.
• MongoDB connection.
• JWT secret.

The frontend configures the API URL.

Real environment files and private credentials are not included in the download.

What the Lite edition does not include

SG SaaS Starter Lite is designed to remain lightweight and easy to understand.

For that reason, it does not include advanced features such as:

• Multi-tenant organizations.
• Workspace isolation.
• Advanced roles.
• Advanced permissions.
• Realtime notifications.
• Socket.IO.
• Activity logs.
• Advanced analytics.
• Charts.
• Workspace branding.
• Advanced organization settings.

These capabilities are reserved for more complete editions such as SG SaaS Starter Pro.

Good use cases

SG SaaS Starter Lite can be used as a foundation for:

• Micro SaaS products.
• MVPs.
• Admin dashboards.
• Early-stage CRMs.
• Backoffice tools.
• Client portals.
• Internal tools.
• Management systems.
• Admin panels.
• User-based digital products.

The main advantage is that you do not start from an empty project.

Authentication, user management, backend structure, database integration, dashboard and administrative UI components are already available as a base.

Main technologies

The project uses:

• Next.js.
• React.
• TypeScript.
• TailwindCSS.
• Node.js.
• Express.
• MongoDB.
• Mongoose.
• JWT.

These technologies are widely used and make the starter easy to extend according to each project's requirements.

Free download

SG SaaS Starter Lite is available for free from SG Hub Market.

You can download the source code, install it locally, modify it and use it as a foundation for personal or commercial projects according to the included license.

Recommended resource

Download SG SaaS Starter Lite from SG Hub Market:

SG SaaS Starter Lite

The download includes:

• Complete source code.
• Separate frontend and backend.
• Documentation.
• .env.example files.
• Demo seed.
• License.
• Ready-to-download ZIP package.

This resource was developed by Santiago Gretter Software Studio.