Notes about the VPWORKSPACE file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The VPWORKSPACE file type is primarily associated with 'Visual Paradigm for UML' by Visual Paradigm. VP-UML is a UML CASE tool that combines professional UML modeling, advanced code engineering and excellent interoperability into a single development platform. The full folder name is %HOME_DIRECTORY%\.VPWORKSPACE so it's not exactly a file extension but a folder extension with no rootname.