NEW FEATURES FOR VERSION 1.1.0
Now as well as allowing you to filter out the public template list by add-on, you can now also filter out the Admin Templates by add-on:
I have also implemented Search for Admin Templates. The Admin CP search does an ok job at finding some Admin Template titles, but now you can search on titles AND admin template content (AND add-on of course
As well as the above new features, the add-on filter list now also contains "XenForo" which will list only those templates that do not have an actual add-on assigned to them. (Such as default XenForo templates and templates where the add-on drop down has been left blank).
Also, once you've selected an add-on, you can return back to the unfiltered list by clicking on the "Clear Add-on Filter":