Beehexa is an experienced agency, they delivered a lot of Magento integration project successfully.
They developed their own Magento RMS Integration Integration which help to synchronize RMS catalog, stock, product images to Magento via API and download orders, customers from Magento to RMS easily. The application is very easy to install and it costs some hours for putting all data online. It has slack notification for latest transaction update too, very cool.
