Paul Gregory

Adds three widgets – “Text/List”, “Text/List (If Logged In)” and “Text/List (Not Logged In)”. These can be used much like the normal Text widget, except two of them only display if the condition is met.
Potential Uses: 
* Add a link to a Register page, along with some text promoting registration (for example on a site with the bbPress plugin) 
* Display adverts to users who are not logged in 
* Display useful links to users who are logged in. 
* Display a nice list to everyone.
Because the widgets are separate, you can have the logged-in widget in a different place to a logged-out widget. You don’t even have to have pairs of widgets.
Unlike the normal Text widget which just has a toggle for paragraph on/off, this widget has four display options:
<ul>
<li>No formatting</li>
<li>Add paragraphs</li>
<li>Bullet list (ul)</li>
<li>Numbered list (ol)</li>
</ul>
The list options are useful if you are adding a number of links – simply add each one on a new line and they’ll be turned into a bullet. Please note that this plugin adds no CSS. Often themes style the lists within a widget to make menus look nice, so your theme may (for example) prevent numbers from showing. See FAQ.
You may find that the Text/List widget is useful even without the logged-in / logged-out conditional.

Logged In Conditional Text Widget

Adds text/list widgets - one only shows if user is logged in, and the other only shows if a user is not logged in. A third shows regardless.

Scott (@scottsweb)

mobble provides mobile related conditional functions for your site. e.g. <a href="https://wordpress.org/extend/plugins/mobble/faq/" title="More examples" rel="ugc">is_iphone(), is_mobile() and is_tablet()</a>.
CSS media queries are great for creating responsive web designs but they do not always provide enough control. There are times when not all of the content, JavaScript or CSS on a page is relevant for a particular device. With the mobble functions you can make these kind of tweaks to your theme.
mobble can also add device information to the body class of your theme allowing you to easily target your CSS for different gadgets.
<a href="http://scott.ee/" title="Freelance WordPress web design Farnham, Surrey" rel="nofollow ugc">a plugin by Scott Evans</a>

mobble

Plugin is very simple and works very well. Great example of the plugin that does one job and does it well. Very appreciated!

Great plugin

Helper plugin that provides conditional functions for detecting a variety of mobile devices & tablets. Perfect accompaniment to CSS Media Queries.

Logged In Conditional Text Widget vs mobble