Fumiki Takahashi

TAROSKY INC.

This plugin will show notification for old browser, Internet Explorer.
Go to “Setting” > “Reading” and customize the message, URL, and labels.
To check the look and feel in your modern browsers, add query parameter to the URL <code>ie=true</code> e.g. <code>https://example.com/?ie=true</code>

Taro Browser Happy

A WordPress plugin to display notice to old browsers.

Zach Schnackel

A handy utility plugin that provides support for media queries and emulating CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8. Uses <a href="https://github.com/keithclark/selectivizr" rel="nofollow ugc">Selectivizr</a> and <a href="https://github.com/scottjehl/Respond" rel="nofollow ugc">Respond.js</a>.
Uses conditional statements to only load these libraries in IE8 or older.

WP Fossil

Provides support for media queries and emulating CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8.

Taro Browser Happy vs WP Fossil