PMO System is a private project-management tool used by a single project manager. It prepares project status reports, tracks tasks, risks and decisions, and sends notifications to its owner.
It is not a public service. There is no sign-up, and no other users can access it.
It connects to the owner's own Google account (Drive, Sheets, Docs, Slides and Calendar) only to read and update the owner's project files inside a single project folder.