Looking for any good inventory software

Hey guys!

I have a client that’s looking to replace their current inventory management software (advance pro).

I was wondering based on anyone’s experience if they know of any software programs comparable? Or perhaps plugins.

It’s got to be far more robust than woo commerce standard post types and tags.

Essentially all their data (flat files) has got to be uploaded into this system and displayed via our WordPress theme web site we are going to build for them. It’d be nice too if all transactional data could be updated actively too.