Files with langz file extension can be found as language data files from DigiChat program.
LANGZ file extension - DigiChat language data
What is langz file? How to open langz files?
File type specification:
The langz file extension was in the past used in DigiChat program for one of its default language data files. These files contain localized data. Seems like the program is discontinued.
This langz 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.