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Astah, formerly known as JUDE (Java and UML Developers' Environment, pronounced Jūdo (ジュード)), is a UML modeling tool created by Japanese company Change Vision. JUDE received the "Software Product Of The Year 2006" prize, established by Information-Technology Promotion Agency in Japan.[1]



The Community edition (formerly known as Take (, "Bamboo") edition for prior to version 1.4) is free to use and offers the following functionality:[2]


JUDE/Professional is the product version of JUDE with all the features of JUDE/Community plus enhancements. It has features such as input-output and diagram creation guidance. It is suitable for business use, large-sized models, and document creation.[3] A 20-day free trial is available by obtaining an Evaluation License.

  • Merge JUDE Projects
  • UseCase Descriptions
  • UseCase Description Templates
  • Process Diagram
  • Model Input-Output function from/to XML
  • Mindmaps
  • ER diagram
  • JUDE at ComponentSource

JUDE/Professional began to support the part of diagrams' expressions of UML2.0 from version 3.0.

  • Frame
  • Navigable Association (Class Diagram, UseCase Diagram, Deployment Diagram)
  • Required Interface (Class Diagram) (from version 3.1)
  • Provided Interface (Class Diagram)
  • CombinedFragment (Sequence Diagram)
  • InteractionUse (Sequence Diagram)
  • FoundMessage (Sequence Diagram)
  • LostMessage (Sequence Diagram)
  • StateInvariant (Sequence Diagram)
  • Vertical and Horizontal Partitions (Activity Diagram)
  • Component Diagram (from version 3.1)
  • Composite Structure Diagram (from version 3.1)

JUDE/Professional supports also ER diagram from version 3.2.


JUDE development was started by Kenji Hiranabe, CEO of Change Vision, Inc., in 1996; around the time that UML, Java, and some design patterns began appearing. He sensed that a radical UML tool for Object-Oriented Development was going to be in demand in the future and this idea spurred him to start creating JUDE. He gathered volunteer engineers in Eiwa System Management Inc., for whom he was working at the time and they developed it in their free time as a non-money making venture; JUDE was originally named JOMT.

JUDE was provided as a free software in 1999. Five years later JUDE started selling in the Japanese market. This decision came about because some UML modeling tools existed overseas but they were a bit high priced; and the company would get feedback from Japanese users and could evolve more if JUDE was released on the market.[4]

The number of JUDE users was 120,000 as of October 30, 2006. In September 2009, JUDE was renamed to Astah after receiving concerns from German users who pointed out the product name was similar to the German word Jude, which refers to a male Jew.[5]

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