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.

Sergio Scabuzzo

When running a an audit on a website (yours, a competiror, or client), you can often find yourself going to around ten or more websites to run tests (Inquiries). 
At each of these you then paste the same URL and run it’s test and repeat for each one. Most of these services use the GET HTTP request method. You see these as the ?q= part in <a href="https://duckduckgo.com/?q=ecotechie" rel="nofollow ugc">https://duckduckgo.com/?q=ecotechie</a>.
I decided to write this plugin so I could input a URL once and run all of these tests more easily. No need to hunt down the website addressses or even leave the WordPress admin dashboard!
Features:
<ul>
<li>Use any valid URL for testing, it doesn’t have to be the current site the plugin is installed on.</li>
<li>Add or remove websites to use for tests (Inquirers).</li>
<li>Sortable by filter types like SEO, Speed, Security, etc. Or create your own tags…</li>
</ul>

Inquirer

Run queries of an arbitrary URL on websites that can take these as query parameters.

mobble vs Inquirer