Archi Tool
Hello Javier
Here you have some general information about Archimate Software





Archi is a free, open source and independent visual design language for Enterprise
Architecture; a notation for describing, analyzing and visualizing relationships amongst
business domains.
Archimate modelling is an open source software and it can be use for commercial
purposes.
This tool is available for Windows, Mac OS X and Unix systems.
Archimate models can be shared and versioned using a Git-type workflow with a
collaboration plug-in (this is for multi-user purpose)
BPMN (Business Process Model and Notation) can be used in this modelling tool.