Magento

Svea Checkout
Includes integrated admin functionality that corresponds with Svea´s servers, current functions are delivering, confirming, canceling and crediting orders
Invoice fee
Ajax cart on checkout page
Google Analytics & Adwords
Cross sell-block on checkout page
Subscribe to newsletter
nShift & Pacsoft support (via Nordic Web Teams freight module)

Documentation

Nordic Web Team has first line support for all the modules listed above.