Rob Scott

Easy to use plugin that adds custom fields to posts to easily add Twitter Card metadata to your posts. This plugin requires Advanced Custom Fields by Elliot Condon.
<h3>Compatibility</h3>
This add-on will work with: 
1. Advanced Custom Fields version 4 and up 
2. WordPress version 3.8 and up

Eazy Twitter Cards For Posts

Easy to use plugin that adds custom fields to posts to add Twitter Card metadata to posts.

dylanirzi

WP Twitter Cards Shop is a WordPress plugin allowing automatic way to add twitter cards, fully compatible with WooCommerce.
Features include:
<ul>
<li>Simple, Easy to install, you can get “Twitter Cards” WooCommerce your store immediately.</li>
<li>Social, Your Twitter followers will see the information of your most detailed and easy to read product.</li>
<li>Control, you can adjust the plugin to your needs.</li>
</ul>

WP Twitter Cards Shop

The Best Way to Add Twitter Cards Metadata in WordPress Site - Support Cards Products Twitter for Woocommerce.

Eazy Twitter Cards For Posts vs WP Twitter Cards Shop