Nick Quinlan

<p>Easily export your WordPress blog to a Tumblr blog.</p>
<h3>Known Issues</h3>
<ul>
<li>Images are not exported</li>
<li>Shortcodes are not processed</li>
</ul>


Tumblr Export for WordPress

jeffikus

<p>Create a tumblr style blog using this plugin. Simply install the plugin, add the easy to use tags to your theme, and your blog will be transformed into a Tumblr-style blog.  Create posts direct from the WordPress dashboard, your iPhone, or the familiar WordPress interface.</p>


WooTumblog

Create a tumblr style blog using this plugin.

Tumblr Export for WordPress vs WooTumblog