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 more robust feature set with strong collaboration tools and user-friendly design, making it suitable for professional environments, while Diagramo is a free, open-source tool that is lightweight and easy to use for basic diagramming needs.