ClearStock

I’ve found Clear Stock to be a very powerful inventory management app and easily one of the best options available on Shopify. It provides deep insights into inventory and makes it much easier to identify slow-moving or dead stock so you can take action.

There is a bit of a learning curve, but once I understood how it works, it became extremely useful.

Also, the developer is very responsive and quick to act on feature requests, which makes the experience even better.