An eco file extension is related to the ECCO Pro software. An eco file stores database.
ECO file extension - ECCO database
What is eco file? How to open eco files?
File type specification:
The eco file extension is related to now discontinued ECCO and ECCO Pro programs from NetManage, which were used for personal information management.
The eco file is a database that was used by ECCO.
This eco file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.