ATLAS

Professional mapping without the licensing maze. Draw, measure, manage layers and chart 60 years of open economic data for any country you pan to — all in one file that runs entirely on your device.

1HTML FILE

~240 KBTOTAL SIZE

0API KEYS

MITLICENSE

FIELD TOOLS

Crosshair drawing

Fingers aren't pixel-precise — so ATLAS inverts the model. Pan the map under a fixed crosshair and drop vertices with one thumb. Points, lines and polygons with survey-grade placement.

Live measurement

Distance and area computed on the spheroid — haversine and spherical excess, not flat-earth math — updating with every vertex. Metric or imperial.

Layers & GeoJSON

Style, toggle and reshape features with draggable vertices. Import and export GeoJSON per layer or as a whole project. Attributes, notes and colours included.

Three-phase search

Your own features match instantly, offline. Repeated queries replay from cache. Worldwide geocoding streams in behind — stale keystrokes are cancelled mid-flight.

GPS field mode

Live position with accuracy rings and one-tap save fix to the active layer. Built for site walks, surveys and field notes.

Yours, on-device

Projects autosave to IndexedDB on your device — no account, no server, no telemetry. Saved views jump you back to any framing.

LOCATION INSIGHTS

Pan anywhere. Chart six decades.

ATLAS detects the country at your map centre and lazy-loads 20 indicators from World Bank Open Data — population, migration, GDP, inflation, cost of living, trade demand & supply, real-estate proxies and crime — each with a full historical chart and 10-year trend delta. Series cache on-device for 7 days, so repeat views are instant and work offline.

Bring your own data too: upload a year/value CSV, or connect any JSON API — the shape-agnostic parser charts it beside the official series.

THE OPEN STACK

Leaflet BSD-2OpenStreetMap ODbLNominatim geocodingWorld Bank Open Data CC BY 4.0OpenTopoMap · HOT · CARTO basemapsATLAS MIT

DRAW

New features land on the active layer. Pan the map and drop vertices at the crosshair for precision, or tap the map directly.

MEASURE

Live readout while you place vertices. Nothing is saved to a layer.

PROJECT

Saved views

Data

Settings

Units

About

ATLAS is a single-file, open GIS workbench. Everything stays on this device (IndexedDB) — no accounts, no telemetry, no license keys.

Built on Leaflet (BSD-2-Clause). Map data © OpenStreetMap contributors (ODbL); tile styles by OSM, HOT, OpenTopoMap and CARTO under their published free-use policies. Geocoding by Nominatim. App code MIT.

INSIGHTS

My data sources

Trends

Source: World Bank Open Data (CC BY 4.0) — annual, country-level series back to 1960 where published. Detected from the map centre; tap the locator to re-detect after panning. Series cache on-device for 7 days, so repeat views are instant and work offline. City-level housing and rent indices aren't published key-free; CPI and PPP price level are the open cost-of-living trends.

ATLAS

ATLAS

Crosshair drawing

Live measurement

Layers & GeoJSON

Three-phase search

GPS field mode

Yours, on-device

Pan anywhere. Chart six decades.

LAYERS

DRAW

MEASURE

BASEMAP

PROJECT

INSIGHTS

FEATURE