Announcing Astah Professional and Astah UML Version 12

by Satomi Joba
Posted on July 15, 2026
Announcement

Astah Professional and Astah UML Version 12 are here — our biggest update yet, with a smarter, steadier AI Chat Copilot, cleaner sequence-diagram auto-layout, reworked reference-project management, and a faster, snappier experience. Update from the download page, or try v12 free with a 20-day trial license.

by Kaori Kitamura
Posted on June 28, 2023July 10, 2023
Releases

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

by Satomi Joba
Posted on March 22, 2012February 8, 2015
Releases

We are pleased to announce that Astah 6.6 is now available! As my previous post shows, a lot of implementations on 6.6 will increase the flexibility, productivity and customizability on your modeling. A lot of […]