Offline-first POS, inventory and booking for small businesses, with 56 real businesses signed up
63+ businesses
My product
- Role
- Founder, Product Designer & Full-stack Developer
- Year
- 2026
- Status
- Live
- Links
- Live site

A production-ready business management platform for cafés, restaurants, salons and retail stores featuring an offline-first POS, inventory management, cash drawer reconciliation, expense tracking, customer accounts, analytics and role-based access control.
The problem
Many small businesses still rely on paper receipts, spreadsheets or expensive enterprise POS systems that are difficult to learn and stop working when the internet goes down. Owners need one affordable platform that handles daily operations without unnecessary complexity.
Approach
I designed SageBizet as an offline-first SaaS platform where speed and reliability come before feature bloat. Every workflow—from taking orders and managing inventory to closing the cash drawer—was optimized around how businesses actually operate during busy hours. The application automatically synchronizes local data when connectivity returns, allowing businesses to continue selling without interruption.
Architecture
Built with Next.js and NestJS using a PostgreSQL database accessed through Prisma ORM. Redis improves application performance while Docker provides consistent deployments. The platform follows a modular architecture separating POS, inventory, finance, customer management and administration into independent domains that communicate through typed APIs.
Features
- Offline-first POS with automatic background synchronization
- Complete inventory management with stock tracking and low-stock alerts
- Cash drawer opening, reconciliation and end-of-day balancing
- Expense tracking with real-time profit calculations
- Customer credit accounts with running balances and payment history
- Role-based access control with customizable permissions
- Business analytics dashboard showing revenue, profit and sales trends
- Responsive interface optimized for tablets, desktops and mobile devices
- Modular architecture designed for future feature expansion
Stack
Next.js, NestJS, TypeScript, PostgreSQL, Prisma, Redis, Docker, Tailwind CSS, React Query, MinIO
Results
- 56 real businesses have signed up
- In production at sagebizet.com, free during early access
- POS, inventory, cash drawer, expenses, customer accounts and bookings in one record
- Keeps selling through internet outages with offline-first sync
“Building a real SaaS product reinforced the importance of domain-driven architecture and designing for real business workflows rather than isolated features. Investing early in offline synchronization, modular services and a scalable database model made the platform significantly easier to expand as new modules were added.”