netbiel

The plugin has its own admin options page (settings page) where you can:
<ul>
<li>add user-friendly horizontal menu and dashboard metaboxes</li>
<li>completely remove blogging plarform widgets</li>
<li>change logo and link of the login page</li>
<li>customize admin bar menu</li>
<li>add custom content to the admin footer</li>
<li>hide notices (core update notice, plugin update notice and theme update notice)</li>
<li>hide screen options and help tag</li>
<li>change basic site settings e.g. hide site generator and feed links</li>
</ul>
It gives your clients a better experience of their new website.
Support for translation!
<ul>
<li>Polish translation</li>
<li>Dutch translation by Jos Wolbers</li>
</ul>
Plugin is ready for WordPress 3.6

CMS admin area

Useful and easy way to customize your WordPress admin area and the login page.

attitude_sk

When you have a lot of metaboxes in the post/page edit screen, you end up scrolling which is confusing. Metaboxes 
represent a group of fields like Address, or Ingredients, etc. Imagine you are creating a deep CV for a person. 
Suddently you have <code>Addresses</code>, <code>Contacts</code>, <code>Profile</code>, <code>Education</code>, <code>Skills</code>, <code>Languages</code>, etc. But as you can see 
 Addresses, <code>Contacts</code>, <code>Profile</code> can be categorized as `Personal Data.
This plugin lets you group metaboxes by anything, just name each metabox as <code>Tab / Box name</code>. So the 
 Addresses metabox should be named as <code>Personal Data / Addresses</code> and it will be grouped with <code>Personal Data / Contact</code> 
under <code>Personal Data</code> tab.
Notes:
<ul>
<li>Both <code>Tab / Box name</code> and <code>Tab/Box name</code> or <code>Tab/ Box name</code> work</li>
<li>Built-in metaboxes are ignored (they usually sit in the sidebar and are needed all the time)</li>
<li>Although tested on 3.2, it should work since 2.5</li>
<li>Javascript enabled is required</li>
</ul>

Post Metaboxes Tabs

Groups mataboxes when editing post/page in administration backend to tabs according to metabox name pattern Tab/Metabox.

CMS admin area vs Post Metaboxes Tabs