Open MET File
MET extension files can represent various formats, some of them as follows:
Presentation Manager
As the acronym for the extension indicates, the MET file is a Metafile originally created by IBM's Presentation Manager, an OS/2 program used to create presentations.
Presentation Manager is the graphical user interface designed and introduced by IBM and Microsoft during version 1.1 of their OS / 2 operating system in 1988.
That said, the MET file can contain both raster and vector graphics, and is used by Presentation Manager as well as other industry applications as a common metafile format.
Although MET files were more popular in the 1990s, they are now obsolete.
eMule
In this section, the MET is a file used by eMule, a peer-to-peer online file sharing program.
eMule is an open source peer-to-peer or peer-to-peer file sharing client that allows you to connect with millions of users to download and share files between them.
eMule is a completely free program.
Thus, the MET file contains links to download resources and their servers.
These resources, used by eMule through the MET file, can include ed2k server addresses, file names, file sizes, hash sets, and statistics.
MET files are used to back up and store lists and histories of download locations so that downloads can continue at a later time.