.SUBLIME-SESSION File Extension
File TypeSublime Text Session File
What is a SUBLIME-SESSION file?
Session file used by Sublime Text, an application used to edit source code; stores session data for workspaces; includes the workspace layout, content, and any other settings of your session.
For Windows users, session files are located in the following directory:
C:\[username]\AppData\Roaming\Sublime Text [version]\Settings
For OS X users, session files are located in the following directory:
~/Library/Application Support/Sublime Text [version]/Settings
Auto Save Session.sublime_session - The file stores the data from your auto saved session. It is deleted when the application is quit.