alexhal

The Shop Ajax tags dropdown allows customers to sort products based on tags instead of variations. For example: 
Show all products with tag “Tshirt” or show all products with tag “Jumper” and “Jersey”.
This plugin still needs some development, but if you just need a basic AJAX tag widget it will do. 
We hope to release and updated version in a couple of weeks which works better.
This plugin is compatible with WordPress 4.0 and WooCommerce 2.2.0-bleeding.

Shop Ajax Tags Dropdown

This plugin adds an AJAX tag Dropdown widget to your WooCommerce shop.

Ryan Hellyer

This plugin was designed to offer improved support for Internet Explorer 6. Since that browser is now irrelevant for modern websites, this is the last version of this plugin which will be released. It will stay here for archival purposes and for anyone who may need to cater for ancient browsers, but it is unlikely to be of use to anyone attempting to create a modern website.
This plugin loads a suckerfish script for providing support for older browsers such as Internet Explorer 6. Must be used with an unordered list with a class of .sf-menu.
For help with creating the CSS necessary for a dropdown menu, please try our <a href="https://geek.hellyer.kiwi/suckerfish_css/" rel="nofollow ugc">Suckerfish Dropdown CSS Generator page</a>.

Suckerfish Dropdown Menu

Description: This plugin loads a suckerfish script for providing support for older browsers such as Internet Explorer 6.

Shop Ajax Tags Dropdown vs Suckerfish Dropdown Menu