Capella for SysON

Towards the Next Generation of Capella

Capella for SysON is an open-source initiative bringing the Arcadia methodology to SysML v2 and web-based modeling.
It lays the foundations for the next generation of Capella, combining a proven engineering approach with modern modeling technologies.

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Preparing the Next Generation of Capella

Web-Based Modeling

Build on a modern web-based platform to facilitate deployment and adoption.

SysML v2 Compatibility

Rely on the SysML v2 standard to define your system architectures.

Arcadia at Its Core

Keep using a field-proven methodology to design complex systems.

When the Arcadia Method Meets SysML v2

Capella for SysON brings the concepts and modeling approach of Arcadia to SysON, an open-source, web-based modeling environment built for SysML v2.

Designed as an extesnion to SysON, it extends this SysML v2 native tool with capabilities dedicated to Arcadia.

At its core, the project relies on a SysML v2 library for Arcadia, extending SysML v2 concepts, so that systems can be modeled according to the Arcadia method. By extending SysML v2 with Arcadia concepts and introducing Capella-inspired graphical representations, the project aims to combine the benefits of a standard modeling language with the methodological guidance of Arcadia.

This approach enables engineers to work with SysML v2 models while following the structured engineering activities they already know from Capella.

 

Capella for SysON diagram

Building the Future of Capella, Step by Step

Developed by Obeo, in collaboration with Thales, Capella for SysON builds on three complementary open-source components:

  • Arcadia SysML v2 Library: Formalizes Arcadia concepts using SysML v2.
  • Capella SysML v2 Bridge: Enables the transformation of existing Capella models into SysML v2.
  • Capella-inspired tooling: Provides Arcadia-specific modeling capabilities and Capella-inspired graphical representations within SysON.

Project Roadmap

  1. 2026. Open-Source Foundations
    • Development of the Arcadia library, the Capella-to-SysML v2 bridge, and the first Capella-inspired modeling capabilities in SysON.
  2. 2027. First MVP
    • A first integrated environment for evaluating Capella for SysON on concrete Arcadia use cases and gathering feedback.
  3. Beyond 2027. Progressive Expansion
    • Broader Arcadia coverage, additional Capella capabilities, improved interoperability, and migration support for existing Capella projects.

What about Capella Desktop?

Capella Desktop remains the mature solution for operational Arcadia projects. Capella for SysON is a progressive initiative, designed to provide a future evolution path without disrupting existing engineering investments.

Join the Initiative

Capella for SysON is developed through an Open Innovation approach.
We welcome organizations and contributors interested in shaping the future of Arcadia-based MBSE with SysML v2.

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