Dana Ross

This plugin displays a message at the top of the screen for visitors running outdated versions of the most popular browsers:
<ul>
<li>Internet Explorer 6 SP2 or less</li>
<li>FireFox 2 or less</li>
<li>Safari 2 or less</li>
</ul>
It is designed to be unobtrusive. The message disappears after a few seconds, and it only displays the first time the visitor comes to your WordPress blog/site.
The warning reads: It appears that you are using an outdated version of your browser. Please upgrade your browser for better sercurity and an improved experience.
The message also includes a link where the newest version of the browser can be downloaded.

Dave’s Outdated Browser Warning

Gourav RR

This plugin do best role to detect browser/platform. For wordpress developer its been complicated to detect browser/platform, this plugin will add browser/platform name as class in body tag of webpage, so as a developer you can easily detect browser/platform and write some CSS or JS stuff according to your requirements.
The plugin will do the following
<ol>
<li>
Browser
</li>
<li>
Web server
</li>
<li>
Device
</li>
<li>
Operating system
</li>
</ol>
For example, if you are using ipad, then this plugin will add ipad, osx, and safari classes in body tag.
<h3>Additional enhancements in version 2.0.0</h3>
<ol>
<li>
Detected browsers 
‣ Chrome 
‣ Safari 
‣ Netscape 
‣ Opera 
‣ Opera Mini 
‣ Opera Mobi 
‣ Mac Internet Explorer 
‣ Windows Internet Explorer 
‣ FireFox 
‣ Internet Explorer 
‣ Microsoft Edge Browser 
‣ Lynx Browser
</li>
<li>
Detected Web servers 
‣ Apache HTTP Server 
‣ Microsoft IIS 7 
‣ Microsoft IIS 
‣ Nginx Web Server
</li>
<li>
Detected Devices 
‣ iPad 
‣ iPod 
‣ iPhone 
‣ Android 
‣ Silk 
‣ Kindle 
‣ BlackBerry 
‣ Mobile
</li>
<li>
Detected Operating systems 
‣ Windows 10 
‣ Windows 8.1 
‣ Windows 8 
‣ Windows 7 
‣ Windows Vista 
‣ Windows XP 
‣ Windows 2000 
‣ Windows ME 
‣ Windows 98 
‣ Windows 95 
‣ Windows 3.11 
‣ Mac OS 10 
‣ Mac OS 9 
‣ Linux 
‣ Ubuntu 
‣ Mobile Web OS
</li>
</ol>
<h3>Arbitrary section</h3>

WP Browser/Platform Detection

For wordpress developer its been complicated to detect browser/platform, this plugin will add browser/platform name as class in body tag of webpage, so as a developer you can easily detect browser/platform and write some CSS or JS stuff according to your requirements.

Enjoy guys... :)

Detect Device Plugin, build for Developers

This plugin will append CSS classes in default WordPress body class. You can get browser name, Operating System and actual device name.

Dave’s Outdated Browser Warning vs WP Browser/Platform Detection