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.

Pierre-André Boissinot

Semio Design

This plugin detects if a visitor is using some old version of Internet Explorer and suggests to upgrade to a recent browser. 
The versions to block can be configured in an admin panel. 
Works for blocking IE6, IE7 and IE8. 
Localisation of the plugin into french.

Stop Oldies

This plugin detects if a visitor is using some old version of Internet Explorer and suggests to upgrade to a recent browser.

Taro Browser Happy vs Stop Oldies