hi, im developer of Jet Pro Tool and i have built this tool 1year ago, and it is being used by many merchants with satisfaction, this tool is very light-weight standalone application and very user friendly, easy to use.
with this tool you can manage your whole jet store in it like managing products, orders, returns, settlements and many more.
with this tool i provide a auto order acknowledger which runs on my server and acknowledge your order in every 5 minutes and notify you via email and also deduct your inventory on jet.
i also provide 1 year support and updates and one on one training on TeamViewer whenever required.
in this tool i have also developed plugins which help you to manage your shopify store, also you can send your order to amazon fba and get fulfilled by it.