JOSM

JOSM is an open-source software publisher whose sole product is a feature-rich desktop editor for OpenStreetMap, the collaborative world-mapping project. Written in Java and requiring Java 17 or newer, the JOSM application targets cartographers, GIS professionals, logistics planners, humanitarian responders, and enthusiastic mappers who need to create, modify, or validate street networks, buildings, land-use polygons, and countless other geospatial features. Its plugin architecture supports hundreds of community-developed extensions that add turn-restriction tools, 3-D building mapping, aerial imagery alignment, quality-assurance checks, and integration with external databases, making it equally suitable for quick typo fixes and large-scale import projects. Advanced users leverage its filtering and search expressions to manage dense datasets, while beginners appreciate the step-by-step wizards for common tasks such as tracing roads or adding points of interest. Because it operates offline after an initial data download, field teams can map remote regions without reliable connectivity and upload changes later, a workflow widely adopted by disaster-relief mappers and local government agencies. The publisher’s software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always installing the latest version and allowing batch installation alongside other applications.