programphases

Allows one or more blocks of html code to be inserted into a WordPress post or page. This plugin should work with WordPress 2.5.0 or greater. I have only tested it on my site running WordPress 2.6.3.
<h3>Additional Notes</h3>
Enter blocks of html in the InsertHTMLHere settings page. Use shortcode notation to display the blocks of html in a post or page. Eg. [insert-html-here 1]

Insert HTML Here

Allows one or more blocks of html code to be inserted into a Wordpress post or page.

iSoftware

Blocks lets you create your own reusable blocks of content where you can use shortcodes to insert code snippets, HTML including forms, iframes, etc and control formatting.
You can insert Blocks into pages, posts, widgets or directly into php content.
It is ideal for inserting reusable objects into your content that you can use side by side or as an alternative to standard posts.
It is fully compatible with WPML for content translation and WP Views for content filtering.
Configurable Features:
<ul>
<li>The “Output Mode” setting to control whether block content is rendered adding paragraphs and line breaks (wpautop) or not.</li>
<li>The “Sort Order” setting to control sort ordering when quering for a list of blocks.</li>
<li>The “Block Widget” that allows you put a block in any widget area on your site.</li>
<li>The “Multilingual Block Widget” that extends the normal “Block Widget” to work in a multilingual context with WPML (requires WPML plugin and Block Type Translation enabled).</li>
<li>The “isw-block” shortcode enables a block to be embedded in any post on your site.</li>
</ul>

iSoftware Blocks

This plugin lets you create your own reusable blocks of content.

Insert HTML Here vs iSoftware Blocks