BrickPacker is a site that can be used to manage your store inventory for stores that sell LEGO on various websites, development of the website has just started.
Order sync service
At the moment this website is used to pair up lots where the same item is listed for sale on two websites. This information is used to provide an order sync service so that inventory in those stores is kept in sync when orders are placed. After the lots are paired up and the setup is completed this order sync is completely automatic as long as newly listed items are paired.