Sells online with your own E-Commerce platform or use the embedded E-Commerce CMS.
If you use an external eCommerce solution
If you have an online shop / eCommerce platform, you can synchronize it with Dolibarr ERP CM using external synchronisation modules. You may find external modules developed by third parties on www.dolistore.com for most major Open Source E-Commerce solution.
Most eCommerce solution are fully or partially supported, like Prestashop, Magento, OsCommerce, OpenCart, etc.
Or use the embedded eCommerce solution
In a future, Dolibarr will provide its own eCommerce module so you won't need to install synchronisation services between your ERP and your eCommerce. The integration will be ready on the box. Date of availability is end of 2018.