OSMCHA

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OSMCHA short for OpenStreetMap Changeset Analyzer is a web tool to help mappers analyze and review data changes to OSM. The objective of the tool is to help detect vandalism and act on bad changes to the map data.

Development

OSMCHA was originally written by Wille Marcel in 2015 to investigate suspicious changesets on OSM. A global instance was later hosted by Mapbox as an additional data QA tool for the OSM community.