美国环境系统研究所公司（Environmental Systems Research Institute, Inc. 简称ESRI公司） www.esri.com
美国环境系统研究所公司（Environmental Systems Research Institute, Inc. 简称ESRI公司）成立于1969年，总部设在美国加州RedLands市，是世界最大的地理信息系统(GIS)技术提供商。
多年来，ESRI公司始终将GIS视为一门科学，并坚持运用独特的科学思维和方法，紧跟IT主流技术，致力于为全球各行业的用户提供先进的GIS技术和全面的GIS解决方案，开发出了丰富而完整的产品线。目前，ESRI公司的ArcGIS系列软件已成为中国用户群体最大，应用领域最广的GIS技术平台。 
ESRI中国（北京）有限公司作为ESRI在中国大陆的唯一分支机构，禀承ESRI公司一贯的探索精神和独树一帜的管理风格，以开放、合作、以人为本和对社会负责为立身之本，并结合多年来为中国用户技术支持与集成的经验，为广大中国用户提供满足今天需要的服务，更为其将来的发展奠定坚实的基础的先进的技术构架。ESRI中国（北京）有限公司同时还为中国用户提供遥感图像处理解决方案和eYaImage影像压缩工具的销售和技术支持服务。
When we began this company back in 1969, we felt an almost limitless enthusiasm for the possibilities of geographic information systems (GIS). We understood even then that this new geographic information system technology could bring about a better future.
Our confidence in GIS is built on the belief that geography matters. It fundamentally influences and connects our many cultures and societies. As you explore our Web site, you will find abundant evidence that GIS technology is improving our quality of life by supporting more analytical decision making.
ESRI GIS and Mapping Software [PDF] 
ESRI: Creating GIS for a Better World
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Our technology helps fight forest fires, determine new national boundaries during peace negotiations, find promising sites for new facilities, support optimal land-use planning, route emergency vehicles, monitor climate change, contain oil spills, and perform countless other vital tasks.
GIS technology must constantly evolve to meet the changing needs of business, industry, government, and education. We are ready for these changes. Today, ESRI has thousands of skilled employees who work closely with hundreds of business partners and international distributors and tens of thousands of users. Each one makes a unique contribution to this remarkable technology. Each one makes a difference.