ESRI (pronounced either EZZ-ree or EE-ESS-AHR-EYE, its employees only call it EE-ESS-AHR-EYE, though) abbreviates the name of Environmental Systems Research Institute, Inc., an organization based in Redlands, California which produces Geographic Information System software. They are the biggest manufacturers and sellers of geographic information systems in the world with large offices in both the US and UK and smaller offices elsewhere.

Their server product targeted at Internet applications is called ArcIMS, and their main GIS is called ArcGIS . Their orginal products were the desktop product ArcView and command line product Arc/INFO , both names survive as differing levels of ArcGIS .

Jack Dangermond is the founder and president. The company remains privately held, one of the largest privately held software companies in America.

External link

• http://www.esri.com with atlas of the US
• http://www.esriuk.com for the UK office of ESRI

ESRI also refers to the Economic and Social Research Institute in Ireland .