OpenStreetMap US

Powering community-led tools

Our Charter Project program provides a long-term home for notable OpenStreetMap tools, programs, and services. We provide projects with a stable legal and fiscal framework, so developers and organizers can focus on what they do best: building things.

The OpenStreetMap US Charter Projects program supports projects that align with our mission to support OpenStreetMap in the United States through education, fostering awareness, ensuring broad availability of data, continuous quality improvement, and an active community. With the OSM US Charter program, OpenStreetMap US actively encourages the development of tools, programs and services that contribute to the growth and sustainability of the OpenStreetMap platform in the United States, and beyond.

The Charter Project program provides a framework for long term stewardship and is loosely based on the fiscal sponsorship model for governance of non-profit organizations. Projects are given a home and the ability to fundraise through the OpenStreetMap US organization, a 501(c)(3) charity incorporated in Washington, DC.

Apply to become a Charter Project

Applications are now open on a rolling basis. If you think your initiative may be a good fit to become an official OSM US Charter Project, we would love to learn more and get to know you! A great way to get started is by reading the Guidelines and the Template Agreement. OpenStreetMap US is looking to build strong, long term relationships with our Charters, so expect the process to take up to 3 months once you submit your application to hear a decision.

Charter Project Application

Meet our Charter Projects


MapRoulette breaks up OpenStreetMap work into snack-sized “challenges.” Earn points by fixing validation issues, turning nodes into areas, adding missing tags, and through countless other little tasks that contribute to a healthier map.


What are people mapping? OSMCha is an advanced (yet easy-to-use) tool to analyze bundles of OpenStreetMap edits, called changesets. Advanced filters, vandalism detection, and on-map visualization help you find and verify the changesets you care about.


OpenStreetMap for Roman roads? Middle Kingdom cities? 1890s railways? OpenHistoricalMap is aiming to create the most comprehensive, most out-of-date map of everything that’s existed from Then through Now.


MapRoulette welcomes TomTom as a financial backer!

Nov 20, 2023 · MapRoulette Advisory Board

MapRoulette has come a long way since starting over a decade ago as a simple tool to fix road imports in the United States. Since its inception, we completely overhauled the design,...

MapRoulette joins OSM US as a Charter Project

Mar 9, 2023 · OpenStreetMap US Staff

We are excited to announce that MapRoulette is now part of the growing network of Charter Projects supported by OpenStreetMap US. MapRoulette is an open, collaborative and cooperative microtasking platform for improving...

Welcoming OSMCha as an OSM US Charter Project

Feb 17, 2023 · OpenStreetMap US Staff

OpenStreetMap US is excited to announce our latest Charter Project - OSMCha! OSMCha is an open-source software project started in 2015 focusing on reporting, inspecting, and validating changes to OpenStreetMap. Its mission...

OpenHistoricalMap Welcomed As An OSM US Charter Project

May 26, 2021 · Maggie Cawley

OpenStreetMap US is excited to announce our latest Charter Project - OpenHistoricalMap! As a project, OpenHistoricalMap has existed in some form since 2012 and is well-known in the OSM ecosystem. We had...

OpenStreetMap US Charter Project Program

Oct 28, 2020 · Maggie Cawley, Martijn van Exel, and Steven Johnson

OpenStreetMap US is excited to announce a new way in which we support projects and programs that align with our mission to support the OpenStreetMap project in the United States through education,...