OpenStreetMap US

The ultimate OpenStreetMap validator

What are people mapping? OSMCha is an advanced (yet easy-to-use) tool to analyze bundles of OpenStreetMap edits, called changesets. Advanced filters, vandalism detection, and on-map visualization help you find and verify the changesets you care about.

Meet the team

News and talks

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OpenStreetMap US Wrapped: A Year in Review for 2024

Dec 19, 2024 · OpenStreetMap US Staff

2024 was a year of exciting growth for both OpenStreetMap and the OpenStreetMap US team. Let’s celebrate some of the highlights! The Team Grew OSM US welcomed Jake Low, Software Engineer, and...
Join OSM US in Welcoming Jake Low to the Team!

Aug 12, 2024 · Maggie Cawley

Please join us in welcoming Jake Low to the OpenStreetMap US team! Jake is a software developer and will be working primarily on MapRoulette and OSMCha, both of which are OpenStreetMap US...
Not just a pipe dream: scaling up OpenStreetMap validation

Jun 8, 2024 · Marc Farra and Wille Marcel

This talk introduces the new OpenStreetMap data pipeline that has been built for OSMCha and has now been migrated to the OSM US organization. We will talk about real-changesets, one of the...
OSMCha has a new home at OpenStreetMap US

Mar 12, 2024 · Wille Marcel

At the beginning of 2023 we announced OSMCha as a charter project of OpenStreetMap US. After almost 10 years of being generously hosted by Mapbox, OSMCha moved to a new home at...
The state of OSMCha

Jun 10, 2023 · Wille Marcel

OSMCha is one of the main validation tools for OSM. It was created as an open-source software project in the spare time of a single developer. Then Mapbox supported its development and...