rob1n

This plugin does two things to your dashboard:
<ul>
<li>The WordPress News and Other WordPress News sections are removed. You don’t even load them. Why? So you won’t have to bother 
with the AJAX call for the news. Also, it looks neater.</li>
<li>The sidebar (with incoming links, recent posts, etc.) is made more horizontal, with four columns instead of the default one. 
This makes it so you can see all the information at one glance, rather than having to scroll down.</li>
</ul>

Cleaner Dashboard

Removes the WordPress news sections and reorganizes the sidebar for maximum screen usage. See the screenshots for more details.

rohitpoonia

RP cleaner allows you to clean up your dashboard and add a welcome message for you with some custom text and let you do a clean work in wordpress.
We’ll keep updating this plugin in regular basis and gives you a good control in your wordpress dashboard.

RP Cleaner

RP cleaner is a kind of plugin which gives user to beautify his / her dashboard as per his / her needs.

Cleaner Dashboard vs RP Cleaner