Office Closure Notice on April 17, 2026

Please note that our office will be closed on Friday, April 17, 2026, due to an internal event.
Support services will resume on Monday, April 20.

On June 16, 2025, Change Vision, Inc. hosted a one-day tutorial on Enterprise Architecture Modeling with UAF, led by Dr. James Martin (The Aerospace Corporation / INCOSE Fellow).
Forty participants from diverse industries and academia joined, engaging in lively discussions. A networking reception followed, offering a valuable opportunity to deepen understanding of UAF.

🚀 The ChangeVision Members Site has been renewed!
As of March 8, 2025, our exclusive platform for Astah product support and license management has been fully upgraded! Enjoy a modern UI, Google Sign-in, and smarter license management for a smoother experience.

Change Vision, Inc. proudly sponsors TSEC2024, held in Bangkok from August 6-9, 2024. Join us for this inaugural event to explore systems engineering innovations. Register by July 15 and enjoy a special 6-month free license for Astah products exclusively for attendees!

Change Vision, Inc. proudly announces our partnership with Collaboration Systems, a leading provider of systems engineering and product management solutions.

Join us as we unveil the latest suite of updates to Astah Professional, Astah UML, Astah SysML, and Astah System Safety—each designed to significantly enhance your modeling capabilities and efficiency.

by kenjihiranabe
Posted on October 11, 2023October 12, 2023
API

This is an introduction to our new modeling framework that makes high level requirements for safety, high reliability and availability of the system align with machine learning pipelines consistently. We will be featuring a clear […]

We have released Astah version 9.1 with new features and over bug-fixes on June 28th, 2023.

Dark mode became available for Astah System Safety since version 8.0. We provide not only tons of dark themes, but also plenty of light themes.
So you can choose one that fits your personal taste from various themes to make it more relaxing to work with Astah.