QuickBooks Online is accounting software for small-to-medium-sized businesses.
QuickBooks Enterprise is the same software, with dozens of additional features, for large-sized businesses.
QuickBooks Desktop is also the same software, but instead of being a cloud-based accounting software for multiple users, the desktop version is locally installed and charges more per user.
You can easily do QuickBooks online inventory management on Enterprise, but it's not the optimal financial choice unless you operate a large business with more than 500 employees.
There are more QuickBooks plans available for business owners and middle-level managers, but be sure to double-check the plans, as the names of the plans are different in Europe and the USA.