Files with cex extension are used for ThumbsPlus application. They contain image data.
There are 2 other file types using
the CEX file extension!
.cex - CLAN output
.cex - SolidWorks Enterprise PDM vault export data
Detailed description
Software that open cex file
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What is cex file? How to open cex files?
The cex file extension is associated with ThumbsPlus program developed by Cerious Software company. The cex extension file format is used for images in JPEG compression to work with them.
The default software associated to open cex file:

ThumbsPlus 
Company or developer:
Cerious Software, Inc.
ThumbsPlus is a highly customizable image database with thumbnails and batch editing. It makes it easy to catalog, organize, locate and maintain all of your graphics, multimedia and font files.
Help how to open:
This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.
How to convert:
As far as we know, this .cex file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.
List of software applications associated to the .cex file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open cex file, edit cex file, convert cex file, view cex file, play cex file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting cex files.
Programs that can create cex file - ThumbsPlus image file
Programs supporting the exension cex on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about ThumbsPlus for create cex file action.
Unspecified and all other actions for computer programs working with cex file - ThumbsPlus image file
Click on the software link for more information about ThumbsPlus. ThumbsPlus uses cex file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
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