SysON

Edit SysML v2 models with SysON, an open-source and web-based MBSE modeling tool. It provides graphical, form-based, and tabular editors accessible via a web browser, eliminating the need for desktop installations. SysON is compliant with the OMG’s SysMLv2 specification, including language concepts, REST API, and textual interoperability format. Hosted within the Eclipse community, SysON aims to foster industrial collaboration and accelerate innovation.

SysON was presented at the MBSE Workshop during the INCOSE International Workshop 2025. The tool is actively developed with an agile 8-week release cycle. Key features include a General View for displaying models as graphs, an Interconnection View showing part interactions, native support for Model Libraries for reuse, and Textual Import/Export for human-readable model exchange. It also aims for Capella Interoperability.

SysON is designed for flexibility, allowing for customization and integration. It supports SysML v2 libraries for domain-specific extensions, provides standard APIs for interoperability with other tools, and is built on a low-code platform for creating custom graphical editors. Obeo offers professional services for integration, customization, and a cloud-based SaaS solution.

The roadmap focuses on achieving maturity for teaching and experimentation, expanding industrial collaborations through an Early Adopter Program, and ensuring full SysMLv2 compliance with REST API and textual format interoperability. The goal is to prepare SysON for professional, operational, and large-scale deployment by 2025.