On the linked odoo.com/de_DE/page/download page you can download the versions Odoo Community and Odoo Enterprise. You have the choice between Odoo 10, Odoo 11 and Odoo 12, as well as between the operating systems: Windows, Ubuntu - Debian, RPM and Sources. Before you can download Odoo, you must fill out the form with the following information: company name, name, telephone number, e-mail address, interest in and company size. On the right side you will also find the installation guide.
You need a Odoo Demo?
Odoo.com gives you three ways to test Odoo ERP. We have written an article for you showing the three possibilities. To the article: Odoo Demo