This new version of Sirius Web improves the moments that shape everyday modeling work: finding the right view, triggering the right tool quickly, keeping diagrams readable, and giving specifiers more control over the experience they deliver. The result is a 2026.3 release that feels faster, cleaner, and more adaptable, for both end users and teams building modeling applications on top of Sirius Web. A New Views Panel Keyboard Shortcuts for Faster Actions Diagrams That Stay Readable More Flexible Selection Dialogs An Improved Diagram Editing Experience A Stronger View DSL Get the full overview in our blog post....

Sirius Web: What’s Up, Doc? Watch the replay of this webinar held on March 19, 2026.   If you’ve been wondering what’s up in the world of web-based modeling, Sirius Web is here for you. It’s an open-source platform that lets you build and use custom modeling tools directly in the browser, bringing the power of domain-specific modeling to modern, collaborative environments.Sirius Web has been growing fast, almost as fast as a family of rabbits, with new features and improvements multiplying every release. The latest updates bring smoother diagram editing, faster rendering, richer customization, better scalability, and new APIs for extending and integrating Sirius Web.We’ll also take a look ahead at upcoming capabilities like collaborative modeling and broader ecosystem integration. Join us for a fun and insightful tour of what’s new, and don’t come alone! After all, things grow faster when the bunnies team up. That’s all folks! ***  Presented by: Mélanie BatsObeo Mé...

Sirius Web 2025.12: Another Step Toward a Smoother Experience   Here’s what’s new in this version: Better Diagrams, One Iteration at a Time A More Modern Navigation and Search Experience Sirius Web Now Speaks Multiple Languages Progress on Project Management   Discover the full blog post....

Refining the experience, fixing glitches, improving interactions, and giving you more control     Here’s what’s new in this version: Define your edge style Appearance customization extended to edges and all node types Better label management Improved feedback when dropping a node Selection rework for smoother navigation Workbench views, more flexible layouts   Discover the full blog post: https://blog.obeosoft.com/sirius-web-2025-10...

Discover the new features and improvements!   This update introduces groundbreaking features designed to give you more control, better collaboration, and enhanced customization: Capabilities for Fine-Grained UI Control Enhanced Edge Connection Sirius Web Now Available as a Docker Image Experimental Server for Diagram Exports (SVG/PNG) Workbench Sharing Advanced Customization for Diagram Elements Read more about this new release....

Watch the Replay of Sirius Web Webinar - Thursday, June 19, 2025   Beyond Diagrams: Unlocking the Power of Tables in Sirius Web   While graphical views are at the core of Sirius Web, some information is better understood in a structured, tabular format. This format can also be very convenient for editing a large number of similar objects. Discover how table representations can enrich your modeling experience by providing clarity, flexibility, and a new perspective on your data. Join us to learn how to seamlessly integrate tables into your Sirius Web-based modeling tools.   ***  Presented by: Stéphane Bégaudeau Web Development and Modeling Consultant at Obeo at Obeo Stéphane Bégaudeau is a web development and modeling consultant at Obeo, where he works mainly on Sirius Web. He graduated from the University of Sciences and Technologies in Nantes.  ...

Let's see what are the new features and improvements in Sirius Web 2025.4   The latest Sirius Web 2025.4 release brings significant improvements to enhance user experience and expand customization capabilities: Library Support: Reuse and Share Models Across Projects Explorer: Duplicate Elements Easily Diagram Enhancements: Smarter Edges, Exports, and Actions Table: Interactive Custom Widgets Project Browser: Smarter Filtering Learn more about these updates and how they can optimize your modeling experience in our latest blog post: Read the full article...

Let's see what are the new features and improvements in Sirius Web 2025.2   The latest Sirius Web 2025.2 release brings significant improvements to enhance user experience and expand customization capabilities. This update introduces new features, including advanced layout configurations for Form representations, improved interactivity in Table representations, and further refinements to Explorer functionalities. Learn more about these updates and how they can optimize your modeling experience in our latest blog post: Read the full article...

Replay of Sirius Webinar - January 30th 2025 Unleash the Potential of Gantt, Deck, and Portal Creation with Sirius Web!   Discover how to design your own custom Gantt charts, Decks, and Portals using Sirius Web!Sirius Web is an open-source project that simplifies the development of web-based graphical modeling applications. It empowers users to create, edit, and visualize data through custom views tailored to their specific needs.With Sirius Web, you can craft a variety of views to represent your data: forms, diagrams, text, Gantt charts, maps, and more.In this webinar, we’ll focus on the Gantt, Deck, and Portal representations, significantly enhanced in recent releases.Join us for a guided exploration of this Sirius Web capability!   Agenda For Studio Creators: Learn how to specify custom views such as Gantt charts, Decks, and Portals with Sirius Web. For End Users: Discover how to use the studio to create and edit these repre...

The 27th International Conference on Model Driven Engineering Languages and Systems (MODELS)    Obeo is proud to be a sponsor of the MODELS 24 International Conference! Cédric Brun presents his talk "Advancing Web-Based Modeling Tools with Sirius Web: An Illustration with SysON" on September 24, 2024, for insights into the future of web-based modeling solutions and their practical application with SysON.        We are also proud to sponsor FAME, the 1st International School on Foundations and Advances of Model-Based Engineering, a major event for students: https://fame-school.github.io/...

Replay Capella Webinar - June 18th 2024 Unlock the Power of Diagram Creation with Sirius Web   Discover How to Specify Your Own Diagram Editors with Sirius Web!Sirius Web is an open-source project that streamlines the development of web-based graphical modeling applications. It empowers users to create, edit, and visualize their data in customized views.With Sirius Web, you can create various types of views depending on how you need to represent data: forms, diagrams, text, Gantt charts, cards, etc...During this webinar, we focus on a diagrams - a view where data is represented with nodes and edges - which has seen numerous improvements in recent releases.Join us for a guided tour of this Sirius Web feature. Agenda The core principles of Sirius Web Recent changes in Sirius Web following the adoption of ReactFlow As a studio-maker, how to specify a custom node-based view with Sirius Web? As an end-user, how to use the s...

Replay Sirius webinar - February 29th, 2024 What's New and What's Next? Sirius Latest Technological Advancements and Roadmap   A new year has begun! It's time to take a look back at 2023 and make plans for 2024! In this webinar, Mélanie Bats presents the major events of 2023, the roadmap for 2024, and the main features included in the latest version of Sirius, including major improvements in the Web version: - the adoption of React Flow for our diagram rendering,- Gantt, Deck, and Portal new kinds of representation,- reference widgets, custom widgets, and pages in the Form representation,- filters on tree-based representations,- domain definition reusability,- and much more!   Presented by: Mélanie Bats - CTO at Obeo In my daily work, I am mainly focused on managing the R&D team, creating products based on our own open source technologies. I am used to work in the development of modeling tools with Sirius like UML Designer. I am committer for the EEF ...

Let's meet at EclipseCon 2023! Obeo team members will present several talks during this amazing event, EclipseCon 2023. You will learn a lot about modeling with Sirius and Sirius Web!   Tuesday, October 17th 09:00 AM to 12:00 PM CET | Wilhelm-Krämer-Zimmer Let's Practice Sirius Web: Building Web-based Modeling Tools by Melanie Bats (OBEO), Pierre-Charles David (OBEO), Axel RICHARD (OBEO) 4:50 PM to 5:25 PM CET | Bürgersaal 2 (Sirius + Papyrus) × Web: a new Era for Collaborative Engineering tools by Cedric Brun (OBEO)and Sebastien Gerard (CEA LIST) Wednesday, October 18th 3:15 PM to 3:50 PM CET | Schubartsaal Shape me Up before you go go! A journey transforming how we build products by Melanie Bats (OBEO)     The leading conference for developers, architects, and open s...

Press Release Paris and Nantes, France - October 10, 2023                  Shaping the Future of Model-Based Engineering   CEA-List and Obeo have initiated a collaboration to share their extensive, long-term experience in developing model-based software to serve a long-term vision for the web-based engineering tools of the future. The outcome will be multi-enterprise collaborative solutions, offering an augmented user experience and supporting emerging standards, like SysMLv2.   In many industrial sectors, customers are requesting increasingly connected products. They also have rising expectations concerning safety, sustainability, and cost-effectiveness. Meeting these demands necessitates an exceptionally modular and multidisciplinary approach, resulting in high complexity. For many years, model-based engineering, which leverages abstraction, computation and visualization, has demonstrated its ability to address this com...

Watch the replay of the webinar (Thursday, June 29th, 2023)   Sirius Web Product Tour: The Low-Code Solution for Creating Web-based Graphical Modeling Applications Sirius Web is an open-source project that simplifies the development of web-based graphical modeling applications. It empowers users to create, edit, and visualize their own data in customized views.Sirius Web supports node-based, form-based, and textual views, making it suitable for various applications such as software architecture modeling, model-based systems engineering, safety analysis, database management, and more...Join us on this webinar for a guided tour of the Sirius Web project:- What are the core principles of Sirius Web?- What does an application created with Sirius Web look like for end-users?- Where can you integrate your Sirius Web applications with other web-based applications?   Mélanie BATS - CTO at Obeo Mélanie Bats works as CTO at Obeo. In my daily work, I am mainly focused on managin...

The event is over, but don't worry, you can catch up our talks thanks to the replay on Youtube!   Sirius Web 101: Create a Modeler With No Code presented by Mélanie BATS (OBEO)   NabLab from Eclipse to VSCode thanks to LSP & Sirius Web presented by Axel RICHARD (OBEO) and Benoit LELANDAIS (CEA)   Langium + Sirius Web = Heart presented by Axel RICHARD (OBEO) and Théo GIRAUDET (OBEO)   Meet us at EclipseCon to learn everything about Sirius Web! Sirius Web is an open-source low-code platform to define custom web applications supporting your specific visual languages.Join us at this event, our team will be there to present 3 talks about Sirius Web and will be at our booth to answer your questions and show demos. Tuesday, October 25th 11:45 AM to 12:20 PM CET | Bürgersaal 2 Sirius Web 101 : Create a Modeler With No Code by ...