Odoo is the world's easiest all-in-one management software. It includes hundreds of business apps:
CRM | e-Commerce | Accounting | Inventory | PoS | Project management | MRP | etc.
I want to know if it is possible to build a website like odoo.com where users can register and do all thier managment online using one single installation and subdomain or subfolder for each account like in odoo.com and Freshbooks and Quickbooks and bill them acording to the number of users and used modules.
If yes then how to configure odoo 8.0 to do that and remove the combobox to select a database? or wich module used by odoo.com that responsible for pricing here: https://www.odoo.com/pricing ?
You may want to study this: http://de.slideshare.net/openobject/launching-your-odoo-saas-offer. Odoo offers different SaaS versions as branches on github, ie https://github.com/odoo/odoo/tree/saas-5. Version 5 corresponds to OpenERP 7.4. However, you should read this thread https://www.odoo.com/forum/help-1/question/where-is-odoo-saas-most-stable-repositories-60675 as a caveat. Stephen Mack does not recommend to use the SaaS branches, but the stable releases. For that reason you might want to consider PragTech's odoo SaasKit.