yoav.aner

<a href="http://blog.gingerlime.com/ajaxizing/" title="WordPress plugin that allows you to ajaxize almost any php function on your site" rel="nofollow ugc">Ajaxize</a> will allow you to ajaxize almost any php function on your site. 
It can be a plugin, a function you wrote, or even a core wordpress function.
1.4 : Removed deprecated split function 
 Added an option to remove Ajax referer protection (not recommended, but helpful in some rare cases) 
 Tested for compatibility with WordPress 4.x
1.3 : Updated to work within 404 templates (thanks to ovidiubica for reporting)
1.2 : Small security improvements (added nonce to the javascript) and tested with WordPress 3.2.1
New in 1.1: Context Awareness. Ajaxize is now setting the correct context for functions automatically. Special thanks to <a href="http://digitalnature.eu/" rel="nofollow ugc">One Trick Pony</a> for helping set the hook in the right place.

Ajaxize

Ajaxize will allow you to ajaxize almost any php function on your site.

jcollings

JC Submenu plugin allows you to automatically populate your navigation menus with custom post_types, taxonomies, or child pages. An easy to use plugin created to be a lightweight menu extension.
Also output a selected section of your dynamic menu through our advanced submenu widget.

JC Submenu

JC Submenu plugin allows you to automatically populate your navigation menus with custom post_types, taxonomies, or child pages.

Ajaxize vs JC Submenu