Wheelmap is a free online map of wheelchair accessible places around the world. On the map, the accessibility of locations is designed through a traffic light system: green for full accessibility, orange for partial accessibility, and red for inaccessibility. Visitors can use the Search bar to find and check the accessibility of nearby locations or filter the search for specific kinds of places (e.g., Transport, Education, Toilets) and degree of accessibility. Wheelmap can be used in web browsers or installed as an app on both Apple and Android phones. Wheelmap is a "participatory mapping and crowd-sourcing project," which means users worldwide can contribute by marking public places for wheelchair accessibility. On the map, locations that need to be marked are designated in gray. Visitors can click "Get involved" in the menu to find out how to participate in mapping, report elevator breakdowns, and help with outreach about this and other accessibility issues and projects. Wheelmap is a project of Sozialhelden, an organization dedicated to tackling social issues like accessibility for individuals with disabilities. It is funded through grants, prizes, and donations, and supported by the efforts of volunteers. To keep up to date, follow @wheelmap on Twitter, Facebook, and Instagram.