Welcome to osmcode.org
Open Source Software for Working with OpenStreetMap Data

The OpenStreetMap project has collected a huge amount of data about our planet. All this data is freely available to everybody. The tools on this site help you work with that data in many different ways. They are intended for developers and cartographers who want to use OSM data in their own projects.


Osmium Library

A fast and flexible C++ library for working with OSM data. It contains building blocks for many typical OSM data handling tasks, such as reading and writing OSM files, or creating geometries from nodes, ways, and multipolygon relations, and much more. It is the basis for most of the software on this site.

Node Osmium

The Node.js bindings to Osmium Library bring its power to the Javascript developer.


With PyOsmium you can use the functionality of the Osmium Library from Python.


Osmium Tool

A multipurpose command line tool based on the Osmium Library. It can convert OSM files from one format to another, merge and apply change files and more.


Extracts coastline data from OpenStreetMap planet file.

Osmium Contrib

Various programs showing what you can do with the Osmium Library. These programs can be quite useful in their own right and they are a great starting point for developers who want to explore Osmium.

See the projects page for a complete list of projects on this site.