OpenStreetMap (OSM) is an open source mapping platform that allows users to view, edit, and use geographical data in a collaborative way. It is a web-based application that provides a worldwide map and geographic information which can be used in a wide range of activities such as route planning, land use planning, and even disaster relief. OSM is a volunteer-driven project that has been built by millions of contributors all over the world. It is an open source platform that allows users to add, delete, and modify map data. It also supports advanced features such as satellite imagery and street view. OpenStreetMap is used for a variety of purposes such as tracking the spread of diseases, analyzing urban development, and even locating roads and trails in remote areas. It is a great resource for anyone looking for detailed and accurate geographical information.
Both are a combination of map database and map rendering, with the ability to use multi-source data, although they use different approaches to moderating multi-source data.