The primary use of Epicor ERP is to manage the stock.

I am currently a customer and have been in the past.  I have also provided consulting services for nearly a decade and have worked with many customers using Vantage/Vista 8, Epicor ERP 9.x, Epicor ERP 10.x, and Epicor Express.

We use Epicor ERP for our total business operation.

The primary use cases are always in manufacturing, although it's pretty extensive. We use it in a couple of trading and distribution situations, however, its core strength has always been in manufacturing.

We use Epicor ERP we use it for our financials and our project organization.

We do the customization part in Epicor ERP for our clients.

Used Epicor 9.05 as a full suite ERP, although the CRM is not as robust as required. Extensive customization was done to suite the business. We have multi-sites users who function well.