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Average Ratings 0 Ratings

Total
ease
features
design
support

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Write a Review

Description

Astah SysML helps systems engineers capture requirements, structure, and behavior in SysML v1 without the weight of a large enterprise suite. Block definition and internal block diagrams, requirement diagrams and tables, parametric diagrams, and use case, state machine, activity, and sequence diagrams are all included, along with mind maps for early concept work. Each diagram is a view of one shared model, so updating a requirement or block keeps every related diagram in step. Assist functions such as double-click creation, creating multiple elements from text, and alignment guides reduce drawing time. Models can be exchanged through XMI and with Cameo Systems Modeler, and profiles let teams extend the language. For AI-assisted work, AI Chat Copilot connects to OpenAI, Azure OpenAI, Claude, Gemini, or any OpenAI-compatible endpoint through your own API key, and a local MCP server lets external AI agents read and work with your models. Astah SysML runs locally on Windows and macOS. It does not include simulation. Developer: Change Vision, Inc. Current version: 11.0 (March 2026).

Description

The software is fully compatible with the UML 2.X standard metamodel, accommodating a variety of diagrams including class, object, use case, component, deployment, composite structure, sequence, communication, statechart, activity, timing, interaction overflow, information flow, and profile diagrams. In addition to UML, it also facilitates modeling with SysML diagrams such as requirement, block definition, internal block, and parametric diagrams. It is optimized for Retina (High-DPI) displays, ensuring that all diagrams, text, and icons appear exceptionally sharp and can be easily exported as High-DPI images in formats like PNG and JPEG. Users can effortlessly discover and install numerous third-party extensions, many of which are open source and available on GitHub. The tool also incorporates a range of shorthands in the Quick Edit feature, allowing for the swift creation of elements and relationships simultaneously, including sub-classes and supporting interfaces, thus enhancing overall productivity. Additionally, this versatility makes it an invaluable resource for professionals seeking comprehensive modeling capabilities.

API Access

Has API Yes 

API Access

Has API No 

Screenshots View All

Screenshots View All

Integrations

Azure OpenAI Service Yes 
Cameo Systems Modeler Yes 
Claude Yes 
Gemini Yes 
OpenAI Yes 

Integrations

Azure OpenAI Service No 
Cameo Systems Modeler No 
Claude No 
Gemini No 
OpenAI No 

Pricing Details

$140/year
1-year license: $140. 1-year floating license: $270. 20-day free trial.
Free Trial Yes 
Free Version No 

Pricing Details

$99 per user
Free Trial No 
Free Version No 

Deployment

Web-Based No 
On-Premises Yes 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux No 
Chromebook No 

Deployment

Web-Based No 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Change Vision, Inc.

Founded

2006

Country

Tokyo, Japan

Website

astah.net/products/astah-sysml/

Vendor Details

Company Name

StarUML

Website

staruml.io

Product Features

Product Features

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