A sales platform extensions for Dolibarr ERP / CRM is now online. It is based on the Open-Source PrestaShop software.
There are still some developments to make possible for third-party publishers to modify the products they have submitted.
The first modules were sold this weekend (2 immediate sales few minutes after site is online without any communication, it is a promising start).
This is the link to this marketplace: http://www.dolistore.com