Gliffy is the most widely relied upon online diagramming app. It operates on HTML5 editor, which is more than twice as fast as Flash so you can create and edit even very large diagrams with no wasted time. Use drag-and-drop shapes from a vast library and point-and-click during the design process. No expertise is required to design and create professional drawings. You can protect and track changes, instantly collaborate with anyone, and publish and share your diagrams with a read-only URL provided by Gliffy. There are options to customize your themes and templates, and Gliffy integrates with Google Drive.
Gliffy lets users bring their ideas and inspirations to life and quickly draw professional diagrams using an intuitive interface requiring essentially no learning curve. Collaboration is also possible without buying expensive desktop software so you can work with anyone who has access to a web browser.