Mentimeter is a cloud-based presentation software that allows users to create engaging and interactive presentations and meetings. It features tools for live polling, quizzes, word clouds, Q&As, and surveys, which can be used to gather real-time feedback and participation from audiences. It is commonly used in educational settings, corporate meetings, and events to enhance audience engagement and make presentations more interactive. Subscriptions typically offer features like collaborative editing, advanced question types, exportable results, and branding customization.