.KGB File

File extension kgb is used for highly compressed archives created with open source program KGB Archiver. These files may also be encoded using AES-256 encryption, but usually have a kge file extension instead.

A .kgb file is a standard archive created with KGB archiver.

Seems that the official website is no longer available and the program is not further developed. It is however still available on its SourceForge website.

This kgb 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.

Files with kgb extension are mainly compressed archives created using KGB Archiver. Looks like the program is no longer developed but still available on its SourceForge website.

How to open:

KGB Archiver can open and extract .kgb files.

How to convert:

KGB archiver also supports common ZIP compression, so you can extract the contents of .kgb files with the program and compress them to ZIP if needed.