Jonathan Desrosiers

Linchpin

Aaron Ware

<blockquote>
Similar functionality has been developed for the <a href="https://developer.wordpress.org/themes/advanced-topics/customizer-api/" title="Theme Customizer API" rel="nofollow ugc">Theme Customizer API</a> and was <a href="https://make.wordpress.org/core/2016/01/28/previewing-site-responsiveness-in-the-customizer/" rel="nofollow ugc">merged into WordPress core as of version 4.5</a>. This plugin will automatically deactivate when you install WordPress 4.5.
</blockquote>
When viewing the front end of the site, a “Responsive” button is added to the WordPress Toolbar. Clicking that will toggle an overlay with your website presented in various sizes for easy responsive design testing.
This can be useful both during theme development, and when writing content to verify it will be presented properly.
This plugin is a heavily modified version of <a href="http://mattkersley.com/" title="Matt Kersley's" rel="nofollow ugc">Matt Kersley’s</a> <a href="http://github.com/mattkersley/Responsive-Design-Testing" title="Responsive Design Testing" rel="nofollow ugc">Responsive Design Testing</a>.

Responsive Page Tester

Gives users with content creating permissions the ability to preview their site in a responsive testbed.

David Gwyer

wpgoplugins

Displays a list of all the admin pages accessed in your sites admin area. This is updated every time a page in the admin area is accessed. Information displayed includes: admin page accessed, user, and time of access.
This is very useful if more than one person maintains your Blog, so you can see exactly who is accessing the admin pages, what they are doing, and when!
The Plugin has been completely re-written to be fully compliant with WordPress 3.x and address some security issues. In particular the Plugin doesn’t store admin log information in a plain text file any more. It now uses the WordPress options database. There is also a 200 line log limit to prevent the log getting too big.
Other new options allow you clear the admin log, and also prevent the admin log Plugin page from being logged. This helps to prevent the log from being inflated everytime you visit the Plugin options page.
See our <a href="https://wordpress.org/extend/plugins/profile/dgwyer">other Plugins here</a>.

Admin Log

All log entries in one wp_options row... Bad logic

Need to see who is accessing what admin pages? This Plugin logs admin activity, and shows: admin page accessed, user information, and time of access.

Responsive Page Tester vs Admin Log