Daniel Nice

This plugin creates a button inside of every rich text editor within WordPress which allows the user to insert pre-built Bootstrap compatible code into the editor. This plugin includes the ability to add Buttons, Wells, Labels & Badges of different sizes and styles easily into your WordPress pages or posts. It also allows you to include the default Bootstrap CSS for these objects in your WordPress editor and your template if you wish.
In addition if you want to you can modify the “display.css” to customize the look of the bootstrap elements.
This is a great plugin if you use a bootstrap theme such as the Roots theme.

Bootstrap MCE Elements

Creates button within WP TinyMCE which inserts Bootstrap Buttons, Wells, Labels & Badges of different sizes and styles into your post/page.

Progressus

Abdalsalaam Halawa

Richard Perdaan

Edie Lemoine

PostNL

With this extension, you can register shipments with PostNL and print the shipping labels with one push of a button. Moreover, your customers choose how they want to receive the order. 
Online Manual (in Dutch): https://postnl.github.io/woocommerce/new-manual
<h4>Main features</h4>
<ul>
<li>Submit shipments easily with PostNL, single orders or in a batch.</li>
<li>Easily print shipping labels.</li>
<li>Your customers can choose whether they want to receive the parcel at home or collect it from a PostNL point nearby.</li>
<li>Use PostNL’s various shipping methods (mailbox parcel, insured shipping, etc.).</li>
<li>Easily send your parcels to Belgium, Europe and the rest of the world.</li>
<li>Follow orders via Track & Trace.</li>
<li>Create multiple shipments for the same order.</li>
<li>Modify the PostNL shipping options per order before exporting</li>
<li>NEW! Free address validation for addresses in the Netherlands.</li>
<li>NEW! Easily share the return label with your customers.</li>
<li>NEW! Merchants based in Belgium can make use of this plug-in as well.</li>
</ul>
A PostNL API account is required for this plugin! Check out your API key in the Mijn PostNL business portal or contact your account manager.

PostNL for WooCommerce

The official PostNL plugin allows you to automate your e-commerce order process. Covering shipping services from PostNL Netherlands and Belgium.

Bootstrap MCE Elements vs PostNL for WooCommerce