OpenMercato is an open-source (MIT), AI-native foundation platform for ERP, CRM and commerce. Omdyo co-creates its core and implements it as a certified partner — and this page explains its architecture and philosophy: why an implementation starts at 80% and ends with a system tailored to 100%.
ScrollOpenMercato (also written „Open Mercato") is an open, MIT-licensed foundation platform for building ERP, CRM and commerce systems. Instead of configuring an off-the-shelf SaaS, you get roughly 80% of the repeatable machinery — modules, permissions, multi-tenancy, events — and build the remaining 20% that sets your company apart as your own code: no fork, no per-seat fees, and full data ownership.
More: openmercato.com · GitHub (open source, MIT) · our partner profile
OpenMercato is MIT-licensed open source. The code, the data and the infrastructure sit on your side — no module fees, no per-seat fees, no black boxes. You pay for work that builds your edge, not for permission to use your own system.
Closed platforms sell a template — it is your company that has to change to fit it. OpenMercato reverses the direction: from day one the architecture assumes every process has exceptions, and gives them a home inside the system, not in a spreadsheet next to it.
Over 50 modules cover what looks alike in every company: catalog, sales, CRM, documents, permissions. So all the implementation energy goes into the 20% that sets you apart from the competition.
Every capability of the platform is a self-contained block: it has its own API, its own pages, its own data, events and permissions. Modules never reach into each other’s internals — they talk only through events and explicit contracts.
That is why each of them can be enabled, disabled, replaced or taken over — with no risk to the rest of the system. And that is why your module, the tailor-made one, is a first-class citizen in the system, not a bolted-on plugin.
Under the hood: TypeScript, Next.js and PostgreSQL, communication over an event bus, Redis for caching and full-text search. Modules are auto-discovered, and each ships its own AGENTS.md — machine-readable guardrails that keep AI-generated code aligned with the architecture.
OpenMercato ready modules: Catalog, Sales, CRM, Customer portal, Workflows, Payments, Shipping, Currencies, Staff, Communications, AI assistant, Data import, Webhooks, Permissions, Audit, Custom fields, Search, Dashboards, Notifications — plus your own module.
Modules arrange themselves in layers — from the foundation every company gets, to enterprise-grade extensions. All of them work on the same data and by the same rules.
The five OpenMercato platform layers: Foundation (permissions, company structure, custom fields, audit and undo, search); Commerce (catalog, sales and documents, payments, shipping, currencies); CRM and operations (relations and pipelines, customer portal, staff and rosters, workflows, communications); Integrations and AI (import / export, API and webhooks, PIM, supervised AI assistant); Enterprise (SSO and SCIM, MFA, record locking).
Fitting your process must not mean copying the platform — that way you lose updates and end up alone. So changes are made on three levels, from the lightest touch to full ownership.
With a single declaration in your app you replace any platform contract: an API route, a view, an event, a permission. Updates keep coming — your change stays.
You add a tab, a column, a field or your own logic to another module — without touching its code. The platform has named, stable extension points for exactly this.
You pull a module into your own application, and from that moment it is yours — down to the last line of code. An owner’s deliberate decision, not a desperate fork.
A closed SaaS ends the conversation before level one. Levels two and three don’t even have a price list.
Every change in the system announces an event: a deal won, an invoice paid, a new customer. Other modules — and your integrations — listen and react. No point-to-point glue, no brittle connectors.
Multi-tenant architecture: every query runs within the boundaries of the organisation it belongs to. The platform refuses to run a query without that context — by principle, not by convention.
Sensitive data is encrypted at the level of individual fields, with a separate key per organisation. What gets protected is configured from the admin panel — no code changes.
Access is granted per individual feature, not per broad role. Without the permission, you won’t see the page, the button, or the API behind them.
The AI assistant sees exactly what its user sees — and not a record more. Every write it proposes waits for a human “yes”.
Yes. OpenMercato is open source under the MIT license — the code, data and infrastructure stay on your side, with no module or per-seat fees. You pay for implementation work, not for the right to use your own system.
Yes. Extensions and changes live in your own layer (override, inject, eject), not in the platform core — updates keep coming and the system stays yours, down to the last line of code.
CRM and ERP-like systems, WMS, B2B portals and commerce, production workflows, and mobile apps for operational teams — usually as one coherent system integrated with your ERP, PIM or payments.
OpenMercato is built in TypeScript on Next.js and PostgreSQL, with an event bus, Redis caching and full-text search. Omdyo adds .NET services and mobile apps (React Native, .NET MAUI) where a project needs them.
For operational companies — manufacturing, distribution, B2B commerce and services — whose processes have outgrown off-the-shelf tools, and for teams that want to grow without per-seat fees or vendor lock-in.
Because it shortens the path to a working system. Omdyo is a certified OpenMercato partner agency and a core contributor, so we know the implementation happy path from the inside — from architecture and security to code review and quality.
We are not just users of this platform — we co-create its core and are a certified OpenMercato partner agency. So we implement it the way it was conceived: openly, modularly, and around your process. If that sounds like the system you are looking for — let’s talk.
