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OpenTreeMap 2


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Or, try our Gitter channel: Join the chat at


For full installation instructions, see the Github wiki.

Alternatively, you can also use the otm-vagrant project to get started. While not recommended for production, otm-vagrant greatly simplifies getting a development environment for testing and contributing to OTM locally.

Environment variables

This project requires several environment variables, to provide API keys for several services.


ROLLBAR_SERVER_SIDE_ACCESS_TOKEN is a token for Rollbar. GOOGLE_MAPS_KEY is a browser key for the Google Maps Javascript API, which can be obtained here.

Other Repositories

This repository (ie, otm-core) is but one of a few separate repositories that together compose the OpenTreeMap project. Others include:

Additional Documentation

The REST API that provides data for the native mobile apps is documented in

Deprecated Repositories

OpenTreeMap has a long history. These repositories still exist, but are deprecated and no development is happening here moving forward.

  • OpenTreeMap - Otherwise known as "OTM1", this is previous generation codebase of OpenTreeMap. It has been entirely superceded by this repository and the others listed above. However, there are some live tree map sites still running on the old OTM1 code, and so we have left it up for archival purposes.

Developer documentation


This application includes code based on django-url-tools, Copyright (c) 2013 Monwara LLC.

USDA Grant

Portions of OpenTreeMap are based upon work supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture, under Agreement No. 2010-33610-20937, 2011-33610-30511, 2011-33610-30862 and 2012-33610-19997 of the Small Business Innovation Research Grants Program. Any opinions, findings, and conclusions, or recommendations expressed on the OpenTreeMap website are those of Azavea and do not necessarily reflect the view of the U.S. Department of Agriculture.


OpenTreeMap is a collaborative platform for crowdsourced tree inventory, ecosystem services calculations, urban forestry analysis, and community engagement.







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