Sanam Maharjan

This is a plugin for converting lots of posts or pages to a custom post type (or vice versa). In the ‘convert from…’ select option you will get the lists of all the post types stores in your current database and in the ‘convert to…’ option you will get the list of all the current registered post types. In addition to this you can also convert from one taxonomy to another and the lists are populated just as that of post types.

Post Type Convertr

A bulk conversion utility for post types and taxonomies.

webdeveric

This plugin provides a dashboard widget that lists recently edited content for quick access.
Options (per user settings):
<ul>
<li>Number of items to show</li>
<li>Excerpt length – number of words (0 = hide)</li>
<li>Show only your edits</li>
<li>What post types to show</li>
<li>What post statuses to show</li>
</ul>

Recently Edited Content Widget

This plugin provides a dashboard widget that lists recently edited content for quick access.

Post Type Convertr vs Recently Edited Content Widget