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.

NerdCow

It shows nice pop up encouraging to upgrade or change current browser to get better performance while surfing the Internet. Template is easily configurable if someone doesn’t like the default one 🙂
GET BYE IE PRO PLUGIN COMPATIBLE WITH THE LATEST WORDPRESS 4.0+ VERSION HERE https://nerdcow.co.uk/downloads/bye-ie-pro/

Bye IE

Plugin allows you to disable access to your website in chosen Internet Explorer versions.

Taro Browser Happy vs Bye IE