Jason Judge

Allows access to custom meta fields on products through the API. 
In short, installing this plugin on your WooCommerce site, will extend the 
WooCommerce API so that custom metadata can be passed back and forth through 
that API.
See the main documentation here: https://github.com/judgej/wc-api-custom-meta

WC API Custom Meta

Awesome!

Allows access to custom meta fields on products through the API.

chester@detrack

On Aug 20, 2019, we will deprecate support for this open source WooCommerce plugin. There will be no future updates beyond version 1.6.4. If you are currently using the plugin, you should still be able to use it as per before. We recommend that if you wish to establish or continue to establish an integration between WooCommerce and Detrack, you can refer to our API documentation to build your own integration.
Want vital delivery information of all your orders at your fingertips?
Why not allow your customers to track their WooCommerce orders themselves?
Detrack is a real-time vehicle tracking and proof of delivery solution that provides both you and your customers the ability to track their orders and have full visibility of the entire delivery process.
Knowing exactly where your orders are at any time will now allow you to answer customers’ queries or resolve delivery issues both efficiently and confidently.
The Detrack plugin allows you to seamlessly integrate your WooCommerce store with your Detrack dashboard.
To use the plugin, simply set up a <a href="https://app.detrack.com/sign_up" rel="nofollow ugc">free Detrack account</a>.
Completely new to Detrack? We got you.
Check out Detrack’s key features on a <a href="https://www.detrack.com/tour/" rel="nofollow ugc">Quick Tour</a> or see how you can get started in no time with our <a href="https://www.detrack.com/quick-start-guide/" rel="nofollow ugc">Quick Start Guide</a>.
Once the plugin is successfully installed and configured, new orders on your WooCommerce store will automatically be sent to your Detrack dashboard to start facilitating deliveries.
By default, only the Delivery Address and Customer Name will be reflected on your Detrack dashboard, but you can easily opt for more information to appear by selecting the necessary options in the settings. 
View the full tutorial on how to <a href="https://www.detrack.com/tutorials/woocommerce-integration/" rel="nofollow ugc">integrate your WooCommerce store with Detrack here</a>.
<h3>Privacy Policy</h3>
This plugin sends the following data to our servers in order to function: 
– Details of new orders, for us to dispatch delivery jobs 
– The current version number of the plugin installed (to check for updates) 
No other information (such as the other posts that you and your customers make on your site) are sent to us. 
The data stored on our servers is then subject to our platform’s privacy policy, which can be viewed in full <a href="https://www.detrack.com/privacy-policy/" rel="nofollow ugc">here</a>
There is a debug log that stores non-sensitive diagnostic information about your store, but it is not sent to us automatically.

Detrack for WooCommerce

Real-time tracking and electronic proof of delivery solution that allows you and your customers to track their orders and have full visibility of the  …

WC API Custom Meta vs Detrack for WooCommerce