OpenStreetMap is a free editable map of the world created collaboratively by volunteers. The OpenStreetMap Foundation is a non-profit organization that supports the project by encouraging growth of open geospatial data. Contributors can map various locations and points of interest by adding "tags" with key-value pairs to describe attributes without strict standards.

1. OpenStreetMap.org OSM for short

2. The Project OpenStreetMap is a free editable map of the whole world. It is made by people like you. OpenStreetMap allows you to view, edit and use geographical data in a collaborative way from anywhere on Earth.

3. The Foundation The OpenStreetMap Foundation is an international non-profit organisation supporting but not controlling the project. It is dedicated to encouraging the growth, development and distribution of free geospatial data and to providing geospatial data for anybody to use and share.

15. LET'S GO MAPPING

20. key = value pairs have structure but no standard. Tag as you see it! Examples highway = motorway amenity = school access = private horse = yes TAGS

22. ODbL

27. Wiki

30. OpenStreetMap.org Andy “blackadder” Robinson TM