Sovereign data infrastructure·Apache 2.0·Built in Europe
Foundry was the question. We are the answer in the open.
Marsovius is the open-source operational platform that gives every institution — from a single online shop to a sovereign government — the same ontology, the same digital twin, the same auditable predictions, the same code.
One platform. Apache 2.0. Deployed where your sovereignty is.
Palantir proved that an operational platform can change how a ministry, a hospital, a fleet command — or a shop with twenty branches — actually works. What it has not done is open the foundations. Marsovius does.
The architecture
Five layers. One contract.
Marsovius is not a single product. It is a stack of five layers that share one semantic contract — the ontology — and operate together as a single system of truth across the institution.
V
Surfaces
The operator-facing applications. Workspaces, case files, operational HUDs, storefront surfaces. Built on the ontology so that every interaction is bound to a contract.
IV
Agents
Assisted and autonomous decision agents. They cannot operate outside the ontology — every action is typed, traced, and revocable.
III
Workflows
Long-running, versioned business processes. Each step transition is signed. Each branch is replayable. Each rule is reviewable in court.
II
Ontology
The semantic core. Objects, relationships, allowed actions. The shared contract that a thousand workers — or a single shopkeeper — agree to when they say "patient", "order", "asset".
I
Pipelines
Source-of-truth ingestion and transformation. Lineage from the raw source to the leaf field. Every transformation auditable, every dataset attributable.
Capabilities
The four capabilities of an operational platform.
Ontology is the contract. The digital twin is the live shadow of the operation. Predictions are bound by the ontology. Agents act only through it.
Capability I
Ontology
The contract of meaning.
A versioned, typed semantic model of every object the institution cares about — subject, order, asset, branch, outcome — and the actions allowed on them. Every dashboard, every workflow, every agent acts through this contract.
· versioned types
· typed actions
· lineage-aware
· reviewable as code
Capability II
Digital twin
A live shadow of the operation.
Marsovius keeps a continuous digital replica of the physical world: a warehouse, a fleet, a hospital floor, a population. The twin is queried like data, simulated like a model, and synchronised in both directions in real time.
· bidirectional sync
· scenario simulation
· what-if branches
· event-time replay
Capability III
Predictions
Forecasts bound by the ontology.
Demand, risk, capacity, throughput, mortality, congestion. Forecasts are first-class objects in the ontology — their inputs are traceable, their confidence is published, and the action they trigger is signed.
· traceable inputs
· published confidence
· human-in-the-loop
· signed actions
Capability IV
Agents
Bounded by the ontology.
Assisted and autonomous agents that cannot operate outside the ontology. Every tool call is typed. Every action is signed. Every capability is scoped by policy and revocable by the institution at any moment.
· typed tools
· capability scopes
· signed actions
· revocable in one call
The four pillars
.01
Sovereign
Deployed on your hardware, in your jurisdiction, under your law. The data and the code remain where your sovereignty does.
.02
Open
Apache 2.0, from foundation to surface. Every algorithm that governs a decision is inspectable, auditable, forkable by your engineers.
.03
Operational
Not a dashboard. Ontology, pipelines, workflows, agents, twin. The architecture that makes everyone act on the same truth.
.04
European
Designed in Europe, hardened against the standards that govern hospitals, ministries, and defense procurement on this continent.
For whom
From a single online shop to a sovereign government.
The same architecture serves a shop with one branch and a state with sixty ministries. The licence does not change. The ontology grows. The code is the same.
01
Online commerce
A single shop.
A storefront unifies its catalogue, its orders, its inventory and its customer support into one ontology. Predictions of demand drive replenishment. A digital twin of the warehouse keeps stock honest.
02
Small & mid-market
A growing company.
A manufacturer, a logistics operator, a regional retailer with twenty branches. Marsovius replaces the patchwork of spreadsheets, ERPs and BI tools with one operational layer that each branch reads from the same definitions.
03
Public health
A hospital network.
A regional health authority unifies six EHRs, two registries, and a clinical-trial pipeline. Outcomes are read by every clinician from the same definition of "patient". The forecast model is auditable by the chief medical officer.
04
Ministry & administration
A national institution.
A tax authority replaces three legacy intake systems with one workflow layer. Each decision is bound to a versioned rule and reviewable in court. The digital twin of the population is held inside the national perimeter.
05
Defense & sovereign
A force command.
A defense organisation runs Marsovius on a sovereign cloud, air-gapped where required. Source is held in an EU repository. The audit chair holds the keys. The operational truth never leaves the perimeter.
What we replace
The category is right. The form of delivery is not.
Vendor
Source model
Deployment
Ontology layer
Sovereignty
○Palantir Foundry
Closed
SaaS / on-prem
Yes
US-controlled
○Snowflake / Databricks
Closed
SaaS
No
US-controlled
○dbt · Airflow · Dagster
Open
Self-hosted
No
Variable
●Marsovius
Apache 2.0
Self-hosted
Yes
EU / customer
Marsovius is the only entrant that combines the operational-platform category with an open-source licence and a European sovereignty commitment.
Editions
One codebase. Three postures.
The same source under Apache 2.0 — community, professional, or sovereign. The code is identical. What changes is the relationship the house enters into.
01 · free
Community
Apache 2.0 · self-hosted
The full platform. No license cost. No registration. Used by a single online shop or a research lab the same way it is used by a hospital network in production.
Production hardening, professional support, named SLAs, security review, deployment workshops. For organisations that want a counterpart in the house but do not require the Pact of Sovereignty.
The most binding posture the house offers. Dedicated team, air-gap-capable, source in EU registries, audit-grant access to the customer’s designated supervisory authority.
The same operational truth for the smallest shop and the largest state. The same code. The same audit. The same right to leave with everything.
We do not publish prices. We accept audiences.
— III —
Inspect the source. Or request an audience.
Marsovius is free to inspect, fork, and self-host under Apache 2.0 — by any organisation, of any size, in any jurisdiction. For institutional deployment, support, and the Pact of Sovereignty, the desks below answer within three working days.