can someone recommend some software for creating and maintaining org charts in SharePoint foundation 2013.
ideally should be free :) easy to edit, and allow picture images to be inserted.
You can use Free JQuery plugin to create Organization charts...
All you need to do is pull data from Lists using JSOM or Rest API and Represent the same using Plugin.
You could use one of this plugin and best part is that it is customizable as per your requirement.
Demo for the same is available on this link: