Maybe someone like me uses Brightpearl (aff link) app for Shopify inventory. Have you ever noticed that BP sometimes loses orders? We occasionally witness such unpleasant situation. So I decided to double check all orders that come to our Shopify store with a simple process in Corezoid app. Here's a post I wrote about it: http://99rabbits.com/shopify-to-brightpearl-order-download-issue/ Anyone can create such a process and never lose orders again :)
P.S. Hope moderators won't delete this post. It's meant to be helpful :)
You can also check out SynCommerce (https://syncommerceapp.com) for keeping track of your orders and fulfilling them with services such as ShippingEasy.
We also allow pushing your orders from other channels such as eBay, Etsy, and Amazon to your Shopify store so you can process and fulfil them right from your Shopify store.