Looking for a business management software thats Zen compatible

Hi

We are looking for a business management platform that can handle stock control, accounts, orders, shipping etc etc but one that has integration with Zen Cart. We did look at something called 'Bright Pearl' which integrates many popular online sales channels... But the integration with Zen was very limited...

Does anyone use anything similar to this that has a decent level of Zen integration for orders, customers, stock etc etc?

From my experience I think its more important to get the features and quality you want in the management software especially if you need to use it for (country-specific) accounts as opposed to just invoicing.
Then (assuming you choose an open-source solution) consider a connector to Zen Cart, that can always be coded later or adapted from an existing connector.