WhizKins

WPSimpleInsert is a plugin to insert custom code in your blog posts. It includes options to either add the code above 
or below post content.
Features:
<ul>
<li>Add custom HTML/PHP/JavaScript to your posts.</li>
<li>Ability to add custom code above or below post content.</li>
<li>Options to hide the code from certain pages like the home page and category and archives pages.</li>
</ul>

WP Simple Insert

A plugin to insert custom HTML or PHP code in your posts. Includes options to insert before or after post content.

David Frank

Faster Image Insert aims to do one thing right:
Moves built-in Media Manager down in a meta-box, right next to main editing panel, so you have full control of the manager: opens it, makes it collapse or hidden from the interface completely.
Best of all, is now you can insert image(s) much faster, and precisely where you want them to be.
<ul>
<li>No thickbox, using metabox with zero interface blocking, quite similar to the uploader in WordPress 1.5</li>
<li>No hacking, default upload interface is not affected, only enhanced.</li>
<li>Insert multiple images in gallery & library mode, without using shortcode; can also insert images in reversed order, and even control spacing between images.</li>
<li>Mass info editing, change title/captions in one-shot.</li>
<li>Smart switches: set default uploader, disable captions.</li>
</ul>
This plugin is designed for:
<ul>
<li>Screenshot lover – movie, game or anime review etc.</li>
<li>Howto guru – cooking guide, hardware DIY guide etc.</li>
<li>Photo logger – author can comment below each photo.</li>
<li>Blogger that has been shouting “run, thickbox, RUN!” to the loading screens.</li>
</ul>
<h3>Notes</h3>
Translations:
<ul>
<li>Chinese – by <a href="http://bitinn.net/" rel="nofollow ugc">DF</a></li>
<li>French – by <a href="http://www.li-an.fr/" rel="nofollow ugc">Li-An</a></li>
<li>Danish – by <a href="http://wordpress.blogos.dk/" rel="nofollow ugc">Georg</a></li>
<li>Japanese – by <a href="http://ilovechibi.net/" rel="nofollow ugc">Chibi</a></li>
<li>Russian – by <a href="http://www.fatcow.com/" rel="nofollow ugc">FatCow</a></li>
<li>Romanian – by <a href="http://webhostinggeeks.com/" rel="nofollow ugc">Alexander</a></li>
<li>German – by <a href="http://www.professionaltranslation.com/" rel="nofollow ugc">Jenny</a></li>
<li>Dutch – by <a href="http://wpwebshop.com" rel="nofollow ugc">Rene</a></li>
<li>Spanish – by <a href="http://twitter.com/adrianramiro/" rel="nofollow ugc">Adrian</a></li>
</ul>
Plugin License:
<ul>
<li><a href="http://en.wikipedia.org/wiki/MIT_License" rel="nofollow ugc">MIT License</a></li>
</ul>

Faster Image Insert

Fully integrates media manager into editing interface, avoid reloading thickbox pop-up, with enhanced features like multi-insert & mass-editing.

WP Simple Insert vs Faster Image Insert