Files with the steamstart extension can be generally found as temporary data files from the Steam Client developed by Valve.
Software that open steamstart file
STEAMSTART file extension - Steam Client temporary data
What is steamstart file? How to open steamstart files?
The steamstart file extension is associated with Steam Client by Valve.
Whenever a game installed in Steam is launched a temporary steamstart file is created for some DRM or internal purposes.
The default software associated to open steamstart 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.
List of software applications associated to the .steamstart 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 steamstart file, edit steamstart file, convert steamstart file, view steamstart file, play steamstart file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting steamstart files.
Programs that can create steamstart file - Steam Client temporary data
Programs supporting the exension steamstart on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for create steamstart file action.