OpenStreetMap

OpenStreetMap (OSM) is a map database maintained by a community of volunteers via open collaboration. Contributors collect data from surveys, trace from aerial photo imagery or satellite imagery, and import from other freely licensed geodata sources. OpenStreetMap is freely licensed under the Open Database License and is commonly used to make electronic maps, inform turn-by-turn navigation, and assist in humanitarian aid and data visualisation. OpenStreetMap uses its own data model to store geographical features which can then be exported into other GIS file formats. The OpenStreetMap website

thumb|The end of the 100-hour-long edit-a-thon (recognized by the Guinness World Records) that took place in [[Warsaw in September 2023]] thumb|An editathon for university students in Germany An edit-a-thon (sometimes written editathon) is an event where some editors of online communities such as Wikipedia, OpenStreetMap (also known as a "mapathon"), and LocalWiki edit and improve a specific topic or type of content. The events typically include basic editing training for new editors and may be combined with a more general social meetup. The word is a portmanteau of "edit" and "marathon". An e

free and copyleft license meant for data; it is incompatible with the GNU GPL

JOSM () (Java OpenStreetMap editor) is a free software desktop editing tool for OpenStreetMap geodata created in Java, originally developed by Immanuel Scholz and currently maintained by Dirk Stöcker. The editing tool contains advanced features that are not present in OSM's default online editor, iD.

OsmAnd (; OpenStreetMap Automated Navigation Directions) is a free and open-source map and navigation app for Android and iOS. It uses the OpenStreetMap (OSM) map database for its primary displays, but is an independent app not endorsed by the OpenStreetMap Foundation. It is available in both free and paid versions; the latter unlocks the download limit for offline maps and provides access to Wikipedia points of interest (POIs) and their descriptions from within the app. Map data can be stored on the device for offline use. Using the device's GPS capabilities, OsmAnd offers routing, with visua

free and open-source map navigation app, designed to function without internet connectivity

Wplace is a collaborative pixel art website developed by Brazilian developer Murilo Matsubara and launched on 21 July 2025, in which users can edit the canvas by changing the color of pixels on the world map. The website is based on r/place, a collaborative project that was hosted on Reddit.

CoMaps is a community-driven, free and open-source, offline navigation app that uses map data from OpenStreetMap (OSM). The app is designed to function without internet connectivity by downloading maps for offline use. CoMaps emphasizes privacy, transparency, and community collaboration, aiming to provide a navigation solution that is not only easy to use, but also respects user data and fosters open participation.

Maps.me is a mobile app for Android, iOS and BlackBerry that provides offline maps using OpenStreetMap data. It was formerly known as MapsWithMe. In November 2014, it was acquired by Mail.Ru Group and became part of its My.com brand. In September 2015, the app was open sourced and a free and open-source software version was additionally made available on F-droid until the application was sold to the payment processor Daegu Limited, part of Parity.com, which changed the application user interface and content, leading original MapsWithMe founders Alexander Borsuk and Viktor Govako to release an

non-profit foundation aiming to support and enable the development of freely reusable geospatial data

web-based OpenStreetMap editor

Wheelmap.org is an online, worldwide map for finding and marking wheelchair accessible places, developed by the German nonprofit organisation Sozialhelden e.V. Anyone can find and add public places to the map and rate them according to a simple traffic light system. The map, which is based on OpenStreetMap, was created in 2010 by a team around social entrepreneur Raul Krauthausen to help people who use wheelchairs or wheeled walkers to plan their days more easily. Parents pushing a baby carriage can also benefit from the Wheelmap information. Currently almost 600,000 public places worldwide ca

Ushahidi is an open source software application that collates and maps data using user-generated reports. It uses the concept of crowdsourcing serving as an initial model for what has been coined as "activist mapping" – the combination of social activism, citizen journalism and geographic information. Ushahidi allows local observers to submit reports using their mobile phones or the Internet, creating an archive of events with geographic and time-date information.

editor for OpenStreetMap data

Mapnik is an open-source mapping toolkit for desktop and server based map rendering, written in C++. Artem Pavlenko, the original developer of Mapnik, set out with the explicit goal of creating beautiful maps by employing the sub-pixel anti-aliasing of the Anti-Grain Geometry (AGG) library. Mapnik now also has a Cairo rendering backend. For handling common software tasks such as memory management, file system access, regular expressions, and XML parsing, Mapnik utilizes the Boost C++ libraries. An XML file can be used to define a collection of mapping objects that determine the appearance of a

Panoramax is a project to collect and display street-level imagery. The project is implemented as free/open source software and allows the crowdsourcing of images, which are then openly licensed. The project was started in 2022 by the French National Geographic Institute (''Institut national de l'information géographique et forestière'', IGN) and the French OpenStreetMap (OSM) chapter. It was designed and developed by a state-owned start-up and is updated and maintained by a community of volunteers and IGN staff. As a free & open source alternative to Google Street View, Panoramax is a federat

StreetComplete is an easy-to-use OpenStreetMap editor that can be used without prior knowledge about OpenStreetMap. The app prompts users to answer questions like "What are the opening hours here?" or "Is this still here?" about places and objects in their surrounding. Answering these questions helps to keep the OpenStreetMap database complete and up to date.

OpenHistoricalMap (also spelled Open Historical Map and abbreviated OHM) is an online collaborative mapping project developing a historical map of the world using OpenStreetMap technology and processes. Whereas OpenStreetMap only includes data about the present day and deletes data as it becomes outdated, OpenHistoricalMap welcomes historical data and preserves multiple copies of a feature as it changes over time. The OpenStreetMap community views OpenHistoricalMap as an outlet for keeping outdated names out of OpenStreetMap, where they could cause misunderstanding.

Mapy.com (until May 2025 Mapy.cz) is a map portal and mobile app that covers the entire world. It is available in multiple languages.

Geochicas is a collective of feminists linked to OpenStreetMap, originally Spanish-speaking, who work for female empowerment and reducing the gender gap in the OpenStreetMap communities and communities associated with the world of free software and open data. Geochicas today has users on at least 3 continents.