An mst file extension is used by Steam Client for some of its internal data files.
MST file extension - Steam Client data
What is mst file? How to open mst files?
The mst file extension is associated with Client for Steam, a digital distribution and social network available for Windows, Mac and Linux developed by Valve.
The mst files contain some sort of data used by Steam.
The default software associated to open mst file:
Company or developer:
Valve Corporation
Steam is digital distribution and multiplayer platform. It is used to distribution of computer games, game updates and also has chat and in-game voices features.
Company or developer:
Valve Corporation
Steam for Mac is digital distribution and multiplayer platform used for distribution of computer games, game updates and also has chat and in-game voices features. On Steam distribute many game developers, such as Electronic Arts, Activision, Bethesda Softworks, id Software etc.
Company or developer:
Valve Corporation
Steam for Linux is digital distribution and multiplayer platform used for distribution of computer games, game updates and also has chat and in-game voices features.
List of recommended software applications associated to the .mst file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open mst file, edit mst file, convert mst file, view mst file, play mst file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with mst file - Steam Client data
Click on the software link(s) for more information. Suggested software applications use mst file type for internal purposes and/or also by different way than common edit or open mst file actions.