Eclipse Capella™ is a comprehensive, extensible, and field-proven open source MBSE tool and method to successfully design systems architecture. Capella relies on Arcadia, a field-proven model-based methodology that covers each engineering phase.
Capella is based on the Arcadia methodology and implements a domain-specific language (DSL) in order to ease appropriation by all stakeholders, usually not familiar with general-purpose, generic languages such as UML or SysML.
Capella is an open-source MBSE tool to create system, software or hardware architectures.
For more information please see:

Access to this tool has been generously donated for INCOSE Members only by

Arcadia – ARChitecture Analysis and Design Integrated Approach
Arcadia is a tooled method devoted to systems & architecture engineering, supported by Capella modelling tool. Click here to learn more about the Arcadia method.
Contact Information
INCOSE Contact for Capella: Stéphane Bonnet (Sté[email protected])
Eclipse Foundation Contact for Capella: [email protected]
General SE Lab Inquiries: [email protected]
Please read carefully the INCOSE SE Lab Terms and User Agreement before using this site.
By accessing or using the INCOSE SE Lab, you agree to be bound by this agreement.

Resources
The Systems Engineering Tools Database (SETDB) offers information on the Tool & Vendor:
- SETDB Tool: Capella
- SETDB Vendor: Eclipse Foundation