PropelKit

Launch SaaS products faster with a production-ready Next.js boilerplate that includes authentication, payments, billing, multi-tenancy, and AI-assisted product planning. This SaaS starter kit is built for founders, developers, agencies, and product teams who want to skip repetitive setup work and focus on building product features.

Build SaaS Products Without Rebuilding the Foundation

Instead of assembling authentication, billing, subscriptions, user management, and infrastructure for every new project, start with a complete SaaS foundation. Describe your product idea in plain English, generate a structured implementation roadmap, and begin development with the core application architecture already in place.

Whether you're launching an MVP, building a client project, or creating an internal business application, the boilerplate provides the essential components needed to ship faster.

Key Features

AI Product Planning

Turn product ideas into structured development roadmaps.

Describe your application in plain English and receive:

• Feature planning
• Development phases
• Build roadmap
• Implementation milestones
• Approval workflow

before development begins.

Next.js SaaS Foundation

Start with a modern, production-ready application stack.

Built using:

• Next.js 15
• TypeScript
• Modern project structure
• Scalable architecture
• Production-ready configuration

to accelerate SaaS development.

Stripe Payments & Billing

Launch subscription-based products with built-in payment infrastructure.

Included features support:

• Stripe Checkout
• Subscription billing
• Webhook handling
• Payment workflows
• Automated PDF invoices

without additional setup.

Authentication & User Management

Deploy secure authentication from day one.

The platform includes:

• Supabase Authentication
• Email and password login
• OAuth providers
• Magic links
• Phone OTP
• Organisation management
• Role-based access control (RBAC)

for secure user access.

Multi-Tenant Architecture

Build applications that support multiple organisations.

Manage:

• Teams
• Organisations
• Shared workspaces
• User permissions
• Tenant isolation

using a pre-configured multi-tenant setup.

Usage-Based Credits

Support metered billing and AI-powered applications.

Included capabilities include:

• Credit management
• Usage tracking
• Automatic credit refills
• Metered consumption
• Flexible billing models

for subscription and usage-based products.

Background Jobs & Automation

Handle asynchronous tasks with built-in infrastructure.

Manage:

• Background jobs
• Scheduled cron tasks
• Retry logic
• Queue processing
• Automated workflows

without configuring additional services.

Email Templates

Speed up customer communication with pre-built email workflows.

Templates support:

• Account verification
• Password recovery
• Billing notifications
• User onboarding
• Transactional emails

ready for customisation.

UI Integration Workflow

Connect generated interfaces with your backend more efficiently.

The boilerplate includes:

• Lovable integration
• Automatic UI wiring
• Backend connection workflow
• Faster interface integration
• Streamlined development

for quicker project delivery.

Production-Tested Codebase

Build with greater confidence using a verified foundation.

The starter kit includes:

• Extensive automated tests
• Verified execution phases
• Production-ready components
• Stable architecture
• Quality assurance coverage

to reduce implementation risk.

Built for SaaS Development

This boilerplate combines AI product planning, Next.js, Stripe payments, Supabase authentication, multi-tenancy, usage-based billing, workflow automation, and production-ready infrastructure into one complete SaaS starter framework.

Key benefits include:

• SaaS boilerplate
• Next.js starter kit
• SaaS development framework
• Subscription billing starter
• AI SaaS template

Built For

• Startup Founders
• SaaS Developers
• Freelance Developers
• Software Agencies
• Product Teams
• Technical Entrepreneurs

Common Use Cases

• Building SaaS MVPs
• Launching subscription products
• Developing AI applications
• Creating client portals
• Building internal business tools
• Shipping multi-tenant platforms

Why It Matters

Launching a SaaS application often means repeatedly integrating authentication, payments, subscriptions, invoicing, user management, and operational infrastructure before meaningful product development can begin. This boilerplate eliminates that repetitive work by providing a production-ready foundation with modern technologies, AI-assisted product planning, built-in billing, secure authentication, multi-tenancy, usage-based credits, workflow automation, and comprehensive testing. Developers can move from idea to implementation more quickly while relying on a proven architecture that reduces setup time and technical overhead.

Launch SaaS Products Faster With a Production-Ready Boilerplate

Describe your application idea in plain English, generate an AI-powered product roadmap, build on a Next.js and TypeScript foundation, integrate Stripe subscriptions and invoicing, manage users with Supabase authentication, support multi-tenant organisations, implement usage-based billing, automate background jobs, and ship production-ready SaaS applications with significantly less setup work.