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

Rakesh Raja

This plugin do wonderful thing. For a developer like me its big problem to make website perfect for all browsers and for that I need to detect browser and write specific CSS for that.
This plugin will give you 3 things
[1] Browser Version
[2] Browser Name
[3] Operating System of user!
For example you will see following 3 classes in you body class.
“chrome 37 windows” this way you can use all these 3 classes together or separate!
Please let me know if you find any bug. Help me make this plugin better!
<h3>Arbitrary section</h3>

WPG Detect Browser

This will add CSS classes in default WordPress body class. You can get browser version, OS and name.

Dave’s Outdated Browser Warning vs WPG Detect Browser