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.

Thad Allender

GPP Base Hook Widgets is a plugin that creates new widget areas for the <a href="http://graphpaperpress.com/themes/base/" rel="nofollow ugc">Base theme</a> by <a href="http://graphpaperpress.com" rel="nofollow ugc">Graph Paper Press</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 Base’s action hooks. This can be quite confusing to some users. This plugin was created mainly for those users without much PHP knowledge. It allows them to take advantage of Base’s 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 3.0+ only.
You must have the <a href="http://graphpaperpress.com/themes/base/" rel="nofollow ugc">Base theme</a> installed to use it.

GPP Base Hook Widgets

Adds 12 new widget areas to the Base WordPress theme framework using its action hooks.

Hybrid Hook Widgets vs GPP Base Hook Widgets