CaseFox offers tight integration with various Google services.  You may login to CaseFox using your Google credentials.  Tasks created in CaseFox are seamlessly copied to your Google Tasks.  Calendar entries /events created in CaseFox are seamlessly copied to your Google Calendar.  Events created in Google Calendar may be copied to your CaseFox case calendars.  You may also use your Google Drive seamlessly from CaseFox to store case documents.