Gliffy is a web-based diagramming tool that allows users to create a variety of visual representations, such as flowcharts, organizational charts, and wireframes. It is designed for both individual and collaborative use, making it easy for teams to work together on projects in real-time. The platform features a user-friendly interface with drag-and-drop functionality, enabling users to quickly add shapes, lines, and text to their diagrams. Gliffy integrates with other applications like Atlassian's Confluence and Jira, enhancing its utility for project management and documentation purposes.