mitcho (Michael Yoshitaka Erlewine)

Over the course of the development of a custom theme or application, custom page templates can start to build up. This plugin adds a “template inventory” tool which lets you see which templates are actually used.
Development of this plugin was supported by <a href="http://arts.mit.edu" rel="nofollow ugc">Arts at MIT</a>.

Page Template Inventory

Over the course of the development of a custom theme or application, custom page templates can start to build up. This plugin adds a "template in …

Mike Schinkel

NewClarity

This plugin does what it names says; it omits page templates from the parent theme from the template dropdown when you are editing a “Page” in the WordPress admin.

Omit Parent Theme Page Templates

Omits Parent Page Templates from the "Page" edit screen in the WordPress admin.

Page Template Inventory vs Omit Parent Theme Page Templates