Michael

Provides a new dashboard widget to display all registered dashboard widgets and enables to remove the other dashboard widgets individually 
for all or selected roles (i.e. even from the screen options) in order to avoid irritation of your clients or other site contributors. 
When checked indiviually, widgets will be highlighted for identification of unknown widget names. 
The intention is to avoid confusion how to handle the screen options to not show or how to interpret unknown or uninteresting dashboard widget content. 
This plugin is self explanatory and can be accessed through the admin dashboard.

Dashboard Widgets Control

Displays all registered dashboard widgets and enables to remove them individually for all or for selected roles (clients or other site contributors).

qstudio

Easily include browser specific stylesheets in templates or select browser and version specific classes in CSS.
Conditional browser stylesheets are added after the main theme style.css allowing them to overrule previous rules – you only need to add the CSS rules that should change.
This plugin uses up-to-date WordPress top level functions, sanitizes all input data and is fully internationalized.
For feature request and bug reports, <a href="https://qstudio.us/support/categories/conditional-stylesheets-and-body-classes" rel="nofollow ugc">please use the Q Support Website</a>.
Please do not use the WordPress.org forum to report bugs, as we no longer monitor or respond to questions there.
<h4>Features</h4>
<ul>
<li>Checks for and adds browser and version specific stylesheets – such as “browsers-windows-firefox.css”.</li>
<li>Add browser and version specific body classes to all pages – such as body.browsers-msie-10</li>
<li>Includes the Mobile Detect class and adds mobile & touch body classes.</li>
<li>Adds a post type body class, for example: “posttype-page”.</li>
<li>Inserts handy HTML comments in the HTML footer of template files to tell you which CSS files could be used and which were found.</li>
</ul>

Conditional Stylesheets and Body Classes

Add conditional browser stylesheets and body class declarations

Dashboard Widgets Control vs Conditional Stylesheets and Body Classes