We need a plug-in to handle costs from our courier company. They have a plug-in for wordpress, OS Commerce,
They have plug-ins for Joomla VirtueMart, Wordpress WooCommerce and Magento, but not for opencart. However, their API allows for easy integration into most systems.
You can take a look at the API documentation here: [url removed, login to view]
We have an example client in php here: [url removed, login to view]
There has been a new class created that will allow easy integration into most systems as all the functions are there and there is caching available. Please see [url removed, login to view]
While testing, please use the demo account, as all Colliveries created with this account will be ignored on our system, however, it provides the exact same functionality as a normal user.
Contact me for the login details.