.OEX File Extension
File TypeOpera Extension
This file is saved in a binary format, which requires a specific program to read its contents.
What is a OEX file?
Extension file used by the Opera Web browser; contains data that adds new functionality to the application; can be used for user interface widgets, such as buttons and search bars, or for running hidden functions in the background.
NOTE: OEX files were introduced with Opera 11. The file format is based on the W3C Widget specification.