BuilderKit

BuilderKit is a production-ready Next.js boilerplate and AI starter kit designed to accelerate the development of AI-powered SaaS applications. It provides a highly modular, deployable codebase that integrates with modern backend services, authentication systems, payment gateways, and multiple AI models. The kit includes 14 pre-built AI applications that cover common use cases such as text generation, image creation, audio transcription, video analysis, and document summarization. These apps are built using tools like OpenAI, Deepgram, Astria, Claude, Mistral, Pinecone, and Stable Diffusion, allowing developers to quickly prototype and ship AI features without building from scratch. The boilerplate includes a complete authentication system with sign-up, login, and session management, along with role-based access control and user profile management. It also integrates Stripe for subscription billing, invoicing, and payment handling, enabling monetization out of the box. Email notifications are handled through services like Resend or SendGrid, with templates for welcome emails, password resets, and transactional messages. BuilderKit offers a landing page builder with pre-designed sections for features, pricing, FAQs, testimonials, and waitlist sign-ups. The waitlist module captures user interest before launch and sends automated drip emails. The codebase is written in TypeScript and uses Tailwind CSS for styling, ensuring type safety and rapid UI development. It is optimized for deployment on Vercel and includes environment configuration for Supabase, which provides PostgreSQL database, real-time subscriptions, and storage. Developers can extend the boilerplate by adding custom AI workflows. The modular architecture separates concerns into distinct directories for API rou