The open-source POS you deserve
A complete point-of-sale system with fiscal integration, built by developers, for everyone. Free, transparent, and community-driven.
Most small businesses can't afford expensive POS systems with fiscal compliance. The few open-source alternatives are outdated, poorly maintained, and lack real tax and invoice integration. We're changing that.
Tech Stack
Built with the best tools for the job
PGLite
Embedded PostgreSQL via WASM. No database server to install. Clone, run, develop.
Next.js 16
The latest React framework with Server Components, Turbopack, and the new proxy architecture.
Drizzle ORM
Type-safe SQL that feels like writing queries. Zero overhead, maximum developer experience.
Tailwind CSS 4
Utility-first CSS rebuilt from the ground up. Lightning-fast, incredibly powerful.
tRPC
End-to-end type-safe APIs. No code generation, no schemas to maintain.
Better Auth
Modern authentication that just works. Email/password, sessions, and more.
Features
Everything you need to run a business
Point of Sale
Fast, intuitive checkout. Works offline with PGLite. Supports multiple payment methods.
$ Payment: PIX
✓ Sale completed
Fiscal Integration
Complete tax document and invoice support. Government API communication, digital certificates, document generation.
// status: 100 - Autorizada
Multi-Tenancy
One installation, multiple businesses. Each with isolated data and configurations.
Zero-Setup Database
Powered by PGLite — embedded PostgreSQL via WASM. No database server to install or configure. Just run and go.
Analytics Dashboard
Sales reports, revenue charts, customer insights. All in real-time with beautiful visualizations.
Internationalization
Built-in support for multiple languages. Currently English and Portuguese (Brazil).
Join 3 developers building the future of open-source POS
Quick Start
Up and running in under a minute
Ready to contribute?
FinOpenPOS is open-source and community-driven. Every contribution counts.