Justin Tadlock

Hybrid Hook Widgets is a plugin that creates new widget areas for the <a href="http://themehybrid.com/themes/hybrid" rel="nofollow ugc">Hybrid theme</a> and attaches them to the theme’s action hooks. Basically, it allows you to add widgets pretty much anywhere.
Typically, to add extra stuff to the theme, you must use one of Hybrid’s action hooks. This can be quite confusing to some users. This plugin was created mainly for those users without much XHTML and PHP knowledge. It allows them to take advantage of Hybrid’s advanced hook system without the need to understand how it works. Of course, even advanced users can take advantage of this, especially when dealing with client work.
This plugin is for WordPress 2.8+ only.
You must have the <a href="http://themehybrid.com/themes/hybrid" rel="nofollow ugc">Hybrid theme</a> installed to use it.
Full instructions for use can be found in the plugin’s <code>readme.html</code> file, which is included with the plugin download.

Hybrid Hook Widgets

Adds 11 new widget areas to the Hybrid WordPress theme framework using its action hooks.

Travis Smith

rafaltomal

Genesis Hooks automatically displays Genesis structual hook names in the browser for all pages. It also allows you to add any hooks that you may have added to various pages like templates or the home page.
IMPORTANT: 
You must have <a href="http://wpsmith.net/get-genesis" title="Learn more about Genesis" rel="nofollow ugc">Genesis</a> installed. Click <a href="http://wpsmith.net/get-genesis" title="Learn more about Genesis" rel="nofollow ugc">here</a> to learn more about <a href="http://wpsmith.net/get-genesis" title="Learn more about Genesis" rel="nofollow ugc">Genesis</a>
<h3>Special Thanks</h3>
I owe a huge debt of gratitude to all the folks at <a href="http://wpsmith.net/go/studiopress" title="StudioPress" rel="nofollow ugc">StudioPress</a>, their <a href="http://wpsmith.net/go/spthemes" title="StudioPress Themes" rel="nofollow ugc">themes</a> make life easier.
And thanks to the various individuals who helped me through the beta testing.

Genesis Hooks

Automatically displays Genesis structual hook names in the browser for all pages.

Hybrid Hook Widgets vs Genesis Hooks