We currently use software that pulls orders from our shopify and exports to UPS worldship, it also syncs our orders with our quickbooks. Problem is there support is terrible and our plan is about to run out and they have increased the price significally. Was interested in how other shopify users sync with quickbooks and ship through UPS worldship. I've searched through the app store and don't really see anything pertaining to what we are looking for. Any info is greatly appreciated.
Few years late to the party, but now with the Excelify App in the Shopify, you can export your Orders to the UPS WorldShip XML format, that you can then import in the UPS WorldShip software to print the label and ship the items with the UPS WorldShip.
More info about it you can read in our tutorial - https://excelify.io/2019/05/13/export-orders-from-shopify-to-ups-worldship/
Excelify is a great app that you can use to export orders into Worldship. You can export the orders in exact format as expected by Worldship. However, i was wondering, if you have a real need to stick with Worldship as you can already perform complete UPS fulfilment without having to go out of Shopify. This can be achieved using Multi carrier shipping label app.