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Osmosis is a command line Java application for processing Open Street Map data.

The tool consists of a series of pluggable components that can be chained together to perform a larger operation. For example, it has components for reading from database and from file, components for writing to database and to file, components for deriving and applying change sets to data sources, components for sorting data, etc. It has been written so that it is easy to add new features without re-writing common tasks such as file or database handling.

The main point of entry for documentation is the project wiki page, although some information is included below.


Osmosis is in light-maintenance mode. As of 2018 we’ve stopped active development and transitioned to periodic acceptance of pull requests with tests and minor version releases. Keep an eye on osmosis-dev list for any updates.



It is recommended to use a pre-built distribution archive rather than compile from source. The location of the latest builds are specified on the project wiki. These archives may be extracted to a location of your choice. The bin sub-directory should either be added to your PATH, or in the case of UNIX-like environments the "osmosis" script may be symlinked into an existing directory already on the PATH.


See Development for details.

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