ViewToo is a cloud-based screen sharing and online meeting tool that allows users to easily hold meetings, share screens, files and annotations with multiple attendees via a single meeting link. It has no sign up or registration required, supports file sharing from various cloud services, and works across Android, iOS and other devices. The document provides examples of how a consulting company, university professor and international lawyer have used ViewToo to simplify online meetings and collaboration by letting them invite others and access files from anywhere.