In Pictures: 13 useful add-ons for Microsoft Excel...
Gliffy Diagrams for Word 2013
If you don’t have Visio, here’s an alternative. This toolset lets you design flowcharts, mind maps, organizational charts, and other diagrams. Paid options are available offering extras like larger storage space in the cloud, and more shape libraries. But you can still use the app for free to create an unlimited number of graphics.
In Pictures: 13 useful add-ons for Microsoft Excel and Word 2013