ECI File

What are ECI files and how to open them

Are you having problems opening an ECI file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is an ECI file?

ECI files have multiple uses, and CODESYS ECI Data is one of them. Read more about the other uses further down the page.


We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open ECI files

Important: Different programs may use files with the ECI file extension for different purposes, so unless you are sure which format your ECI file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested two different ECI openers which you will find listed below.

Last updated: June 29, 2022

More file formats using the ECI extension

Through our research of ECI files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • ThunderByte Antivirus Exact Id/Cleaning Info

Various apps that use files with this extension

These apps are known to open certain types of ECI files. Remember, different programs may use ECI files for different purposes, so you may need to try out a few of them to be able to open your specific file.

SLSLUser submitted
Nexus INvolveNexus INvolveUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about ECI file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.