Esri (Environmental Systems Research Institute) is an international supplier of geographic information system (GIS) software, web GIS and geodatabase management applications. The company is headquartered in Redlands, California. The company was founded as Environmental Systems Research Institute in 1969 as a land-use consulting firm. Esri products (particularly ArcGIS Desktop) have 40.7% of the global market share. In 2014, Esri had approximately a 43 percent share of the GIS software market worldwide, more than any other vendor.