FileInfo.com - The File Extensions Resource

.E00 File Extension

File Type	ArcInfo Coverage Export File
File Format	File
Common?	No
File Description	Contains Geographic Information Systems (GIS) mapping data exported by ArcGIS software; includes Desktop GIS, Server GIS, Hosted GIS, Mobile GIS, and ArcGIS Online programs.
Program(s) that open e00 files	Windows: ESRI ArcGIS software

Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/e00