Open Tree Map is a collaborative platform for crowdsourced tree inventory, ecosystem services calculations, urban forestry analysis, and community engagement. Open Tree Map relies on crowdsourcing and cloud computing to map urban forests and display the ecosystem benefits of street trees in American cities. It was developed as open source software by Azavea, a software company based in Philadelphia, PA. The tree map is available over the internet, as well as on tablets and mobile devices (iPhones or Android phones). Systems can be customized, and maps can be either public or private. The mobile application allows users to:

• Add individual street or private trees to a map, or bulk upload tree datasets;
• Add green infrastructure features;
• Log stewardship activities;
• Search trees by species, location, stewardship activities, diameter, and other tree characteristics;
• Export data to perform in-depth analyses;
• Add photos and share photos through social media;
• Automatically calculate the ecosystem benefits generated by the urban forest mapped each time a tree is added.

Modular pricing for Open Tree Map starts at $79 per month for the Base Plan. The Base Plan allows unlimited users to map up to 25,000 trees, access Android and iOS applications, and share photos and activities on social media.

Among other features, Open Tree Map automatically calculates the economic benefits and environmental impacts of trees in the map being produces using the i-Tree Streets software developed by the USDA Forest Service. The calculations are based on the tree species and diameter. Forestry modeling and prioritization features are also currently under development for Open Tree Map. Upcoming features will include heat maps of optimal planting locations, estimates of the economic impact of trees over a 30-year period, and controls to adjust elements of air quality, stormwater management, health data and more to create heat maps.