Odoo (known as Odoo Community Edition, formerly OpenERP / TinyERP), developed by the Belgium based Odoo S.A., is a free ERP program which is extendable through modules (apps). Over the years it grew in scope and usability. Today, apart from the core ERP features like: Accounting, Warehouse, Sales, Purchase, etc., it also has modules that add: CRM, Website publishing and eCommerce, Project Management and other features accessable through a web based user interface. Odoo is licensed under LGPLv3 which allows for both free and nonfree modules to coexist and be used together. Odoo's extensibilty and permisive license created a diverse ecosystem with thousands of modules from different authors including a separate set of modules named Odoo Enterprise which are released by Odoo S.A under a proprietary license. One of the biggest contributors to the free and open-source Odoo ecosystem is the Odoo Community Association (OCA). It's members and contributors collaboratevly work on projects that..