Open source

Built.

Some tools I have built outside client work. Free and open source.

AI skills for Open GIS

A set of AI skills for open-source GIS tools, so an AI assistant can do real geospatial work instead of guessing at it.

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Practical demos

Two quick uses of the skills, built from public data in Tartu.

Map of Tartu with residential buildings shaded by how many everyday services are reachable within a 15-minute walk

Tartu — 15-minute city

Every residential building in Tartu, scored by how many everyday services are within a 15-minute walk.

Open demo
fig. 002 · ETAK (Maa- ja Ruumiamet, CC-BY 4.0) · Overture Maps · OpenStreetMap (ODbL) · routing: Valhalla
Map of Tartu showing three proposed tram lines, stop catchments and demand layers

Tartu tramline — route analysis

A quick feasibility look at three tram lines, including stop catchments, demand and elevation.

Open demo
fig. 003 · OpenStreetMap (ODbL) · Maa-amet WMTS · analysis: Turf.js

Merit Aktiva AI (and SDK)

An open SDK and agent interface for popular Merit Aktiva accounting software, letting AI assistants work directly with Estonian accounting data.

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trifold - Discrete Global Grid System

A global grid system for indexing anything with a location. The land/sea lookup built on it runs 3–30× faster than BigQuery, PostGIS and DuckDB Spatial on the same workload.

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Globe visualisation of the trifold hierarchical triangular grid at several levels of subdivision

Start here

Bring your AI ideas. Leave with a decision you can fund.

The first step is a free 30-minute discovery call to decide whether the Teardown, the Sprint or neither is the right next move.