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.

Manesh Timilsina

Plugin to extend features of Business Era Theme. This plugin registers custom post types, widgets and custom fields for the <a href="https://wordpress.org/themes/business-era" rel="ugc">Business Era</a> theme.
<h3>Credits</h3>
<ul>
<li>MIXITUP (C) 2012-2013 Patrick Kunka (https://github.com/patrickkunka/mixitup/), <a href="http://creativecommons.org/licenses/by-nd/3.0/" rel="nofollow ugc">Creative Commons Attribution</a></li>
</ul>

Business Era Extension

Plugin to extend features of Business Era Theme. This plugin registers custom post types, widgets and custom fields for the Business Era theme.

CMS admin area vs Business Era Extension