Open Source · Fully Sovereign

Sovereign Data Platform

A demo platform showcasing what a fully sovereign, open-source data warehouse for municipalities can look like. Explore the complete stack — from citizen letter intake to geospatial analysis — with zero cloud lock-in.

Explore the Platform See Demo Walkthrough
About the Platform

Built for Data Sovereignty

This is a demonstration platform showcasing what is possible with fully open-source tooling. Every component runs on your own infrastructure — no vendor lock-in, no cloud dependencies, full control over your data.

Ingestion

Multi-Channel Ingestion

Ingest data from phone calls, website forms, and handwritten letters — processed by an open-source vision LLM for address extraction.

Geospatial

Geospatial Analysis

Self-hosted geocoding with Nominatim, spatial analysis via GeoServer and PostGIS, and a GeoNode data catalog.

Observability

Full Observability

Five pre-built Grafana dashboards monitor API performance, geocoding success rates, LLM extraction metrics, and pipeline health.

Why This Platform

A Complete Data Stack You Can Explore

This platform demonstrates that municipalities and organizations can build a complete, production-grade data warehouse using only open-source, self-hosted components.

What This Showcases

A fully functional data platform demo covering the entire lifecycle: citizen letter intake via drag-and-drop upload, AI-powered address extraction using an open-source vision LLM, self-hosted geocoding, a bronze-silver-gold data warehouse in ClickHouse, and geospatial analysis with GeoServer and PostGIS. Every component runs in Docker containers with zero cloud dependencies.

Why It Was Built

To prove that sovereign, open-source alternatives to commercial cloud platforms are not just viable — they are production-ready. This demo shows how municipalities can process citizen requests, run spatial analysis, and serve analytics dashboards without sending a single byte to a third-party cloud provider. Full control, full transparency, full sovereignty.

What You Can Explore

Browse the Tech Stack to understand the 17+ components and how they connect. Follow the Demo Walkthrough for a step-by-step tour from letter upload to geospatial output. Or explore the Components page to open any live service interface directly.

Explore the Platform

17+ Open-Source Components

From ingestion to geospatial analysis — explore the full architecture or jump straight into the live service interfaces.

Architecture & Tech Stack

Interactive diagram showing how all 13 layers connect — from data sources through the warehouse to GIS and reporting.

View Architecture →

Live Service UIs

Open any of the 15+ running services directly — ClickHouse, Grafana, GeoServer, Prefect, and more.

Browse Components →