Developers Guide

This portal will explain how to create a patch, modify the core JOSM application or existing plugins.

At least basic Java programming skills are necessary. Please consult Portals how could you improve JOSM without Java skills.

User-level and source code topics

Not directly relevant to development:

Development process


JOSM core

JOSM plugins


JOSM Help System



Dirk Stöcker is currently the lead maintainer of JOSM. Developers of JOSM with SVN commit privileges active in the past several months include:

Trac usernameName
akks Alexei Kasatkin
bastiK Paul Hartmann
Don-vip Vincent Privat
simon04 Simon Legner
stoecker Dirk Stöcker
wiktorn Wiktor Niesiobędzki

Immanuel Scholz was the original creator of JOSM, and previous maintainers include Frederik Ramm.

Previous developers include Frederik Ramm and Jiri Klement.

Many others have contributed through bug reports, patches, translations, and documentation work.

Last modified 2 months ago Last modified on 2016-08-23T12:53:39+02:00