Start using Sirius with Obeo Designer Community edition, a ready-to-use package including only Open Source technologies.
Download Obeo Designer for another platform
Note for installation on Mac OS
As Obeo Designer application is not signed yet, it can be considered as damaged by Mac OS
Here are three workarounds to install the product on this platform:
Obeo Designer Team edition allows you to store your models and representations (diagrams, tables, trees) in a shared repository to facilitate collaboration with your other team members.