What is .AVX file extension?
Add-on file used by ArcView, a program used for GIS data analysis and visualization; contains program code that is used to add new functionality to ArcView; may be used to add various extensions, including graphing functions, statistical analysis, and data import and export capabilities.
AVX files are stored in a plain text format.
NOTE: ArcView is included with ESRI's ArcGIS Desktop GIS software.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.