Gliffy is a Web-based tool that allows you to quickly create diagrams and turn complex information into easily understood images. Users are able to share diagrams or invite others to collaborate on one. The Revision Control feature automatically keeps a copy every time a document is saved, so you can track changes or revert to an earlier version. An extensive shape library is available to complement most any diagram.
[Top 10] Use the tool offline
You can use the app to draw diagram without internet connection. It also support code generated to embed on Websites and blogs.
Tips for using the product
If you want to export the diagram as a image file, you need to register a monthly plan.