Scott Lee

For all those times when you need to quickly, nay, swiftly edit the post or page you’re viewing. Also helpful for sites that have the Admin bar hidden when signed in.
Features:
<ul>
<li>If you are already signed in, you’ll be taken to the edit screen of the post or page.</li>
<li>If you are not signed in, you’ll be taken to the login screen and then forwarded to the edit screen upon successful login.</li>
</ul>
Usage:
<ol>
<li>Install and activate the plugin as normal.</li>
<li>Append <code>?se</code> to any post or page URL to be taken the the edit screen.</li>
</ol>

WP Swift Edit

Swiftly navigate to the edit screen of any post, page, etc. by appending ?se to the URL.

Chad Hovell

Select extra layouts from the post editor Screen Options menu. 
There are now 24 variations to choose from!

Three Column Screen Layout

Three, four and five column screen layouts for the post editor.

WP Swift Edit vs Three Column Screen Layout