I have tried 5 different apps for synching Shopify with Etsy and at first, for a few days, was working the best of them. But it didn't last. Does not import all products, most exports to Etsy fail and images for variants are not synched. Support was helpful at the start but has completely ignored me since - they have acknowledged some bugs but apparently can't fix them. Also, apparently it no longer supports Ebay.
Arabian Shopping Zone
I installed the app, but discovered that it doesn't support Wish as it claims. Didn't bother to continue to test other markets. For medium plans, I would suggest reconsidering the price, as I don't see it very competitive.
Great service and fast support.. for value nice solution.. good lucl in project guys....5 stars ......
Vintage Poster Art Shop
Excellent app and first class support. A must add if you want to sell on multiple channels. Before trying expensive alternatives, try this app.