posOpen is an open, modular Point-of-Sale (POS) platform designed for small to medium businesses operating in the real world — including places with unreliable connectivity, limited budgets, and zero appetite for vendor lock-in.

This is not a monolith. This is a platform.

Modern POS systems are often:

• bloated with features nobody asked for,
• locked behind long-term licensing contracts,
• fragile in low-connectivity environments,
• hostile to developers and integrators.

posOpen takes the opposite approach.

We prioritise:

• Simplicity over feature bloat
• Interoperability over proprietary silos
• Ownership over subscriptions
• Reliability over cleverness

A POS should quietly do its job — even when the internet doesn’t.

posOpen is an API-first, offline-capable POS foundation that can be deployed as:

• Cloud-hosted
• On-premises
• Hybrid
• Offline-first (with sync and reconciliation)

The initial focus is intentionally narrow:

• Core sales transactions
• Product & pricing management
• Inventory tracking
• Cash & provider-agnostic payments
• Role-based user access
• Practical reporting (not analytics theatre)

If it can’t run a real shop on day one, it doesn’t ship.

• Open standards first
• Replaceable components
• Configuration over custom code
• API-first, UI-second
• Offline is a requirement, not a feature
• Shipping beats perfection

Everything should be swappable without rewrites.

• Small and medium merchants
• Developers who want clean integration points
• System integrators operating in emerging markets
• Anyone tired of POS systems that fight back

posOpen is under active development.

This organisation hosts:

• core platform repositories,
• reference implementations,
• architecture decisions,
• pilot tooling and deployment assets.

Expect iteration. Expect change. Expect pragmatism.

We welcome contributors who value:

• clarity over cleverness,
• boring reliability,
• documentation that explains why, not just how.

Before contributing:

• keep proposals scoped to MVP goals,
• avoid enterprise complexity creep,
• justify decisions in terms of cost, simplicity, and maintainability.

If in doubt: make it smaller.

A POS system businesses can own, developers can extend, and operators can trust — even when the lights flicker and the network drops.

Quietly powerful. Open by design. Built for reality.