Posts are usually listed in reverse chronological order as they are often used for posting regular time-orientated content. 
postMash lets you customise the order your posts are listed in using it’s simple Ajax drag-and-drop administrative interface. Plus it gives quick access to toggle posts between draft and published states. Particularly useful if you’re using WordPress as a CMS. 
It now no longer requires any modifications to your template code. If you disable postMash your post will go back to your usual ordering.
Feedback: http://joelstarnes.co.uk/contact
<h3>Localization</h3>
Currently only available in english.

postMash – custom post order

Customise the order your posts are display in using this simple drag-and-drop Ajax interface.

Babu Kolassery

You can use the Custom Reorder Manager ( CRO ) plugin to take full control of your WordPress post’s sort order.
Add reorder on demand. Our CRO settings allow you to add Re-order sub menu under WP custom/default post-types with just a click of the button!
Add them any type. Reorder manager can be added to all public post-types such as post, page, media and custom post-types!
Add them any taxonomy. Reorder manager can be added to all taxonomies such as categories, tags and custom taxonomies!
Show them everywhere. Load and display your posts in CRO order using any theme template file with our hassle free and developer friendly functions!
Made for developers. Use functions like: cro_posts(string post_type, array $args = null) and cro_posts_by_taxonomy(array $cro_params, array $args = null) to build powerful templates fast.
<h4>Features</h4>
<ul>
<li>Simple & Intuitive</li>
<li>Powerful functions</li>
<li>User friendly drag & drop sorting</li>
<li>Taxonomy & custom post-type based sorting</li>
</ul>

Custom Reorder Manager

Reorder WordPress posts with drag & drop mechanism.

postMash – custom post order vs Custom Reorder Manager