JOSM – Java OpenStreetMap Editor

JOSM webpage is currently under heavy stress by distributed site scraping which is hard to filter. This may result in temporary failed connects when accessing the site.

Stable version: 19369 Development version: 19394

JOSM needs help with translations and the online help. Please help in the JOSM I18n contest.

Getting Started

• Download some existing data from OSM using Download data on the File menu or the download button . If you have questions during your very first edit, the Introduction page will assist you.

Getting Help

• Online help: Help on the Help menu or press F1 as required to get context sensitive help. Open Help now.
• Join the ​forum or ask at ​help.openstreetmap.org

News

• 2025-04-27 weeklyOSM: The weekly round-up of OSM news, issue ​#770, is now available.
• 2025-03-30 (stable version 19369)
  • Languages Greek and Danish now completely translated. Esperanto has been added. Only minor progress for other incomplete languages.
• 2025-03-01 (stable version 19342)
  • New language variant Canadian English added and Australian English and Norwegian completed. Some progress for other languages.
• 2025-02-04 (stable version 19307)
  • Languages Italian, French, Arabic, Brazilian Portuguese and Swedish are now (again) fully translated.
• 2025-01-03 (stable version 19277)
  • Added new language Welsh and readded Turkish
• More news ...

Contributing to JOSM

• Help translating JOSM into your language! Currently 99% of program texts are done.

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Remember the golden rules of OpenStreetMap:

• Don't copy from other maps
• Have fun!