Gliffy is software for diagramming via a HTML5 cloud-based app. It is used to create UML diagrams, floor plans, Venn diagrams, flowcharts and various other kinds of diagrams online. Developed by Gliffy, Inc.
License: Freemium
Gliffy offers a user-friendly interface and strong integration with Atlassian products, making it ideal for teams already using those tools. In contrast, draw.io is a robust, free, and open-source alternative that supports a wider range of diagram types and offers more customization options.