Astah Professional

Change VisionSoftware Design Tools
Version v12.0 (Jul 15, 2026)(5)

Create UML, ER, and process diagrams for software design.

  • Create UML diagrams to visualize software architecture and system behavior.
  • Model data structures with ER diagrams and database reverse engineering.
  • Produce flowcharts, data flow diagrams, requirement diagrams, and mind maps.
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Astah ProfessionalLoading
UML class diagram built with AI Chat Copilot in Astah, which connects to a supported AI service using your own API key. Describe your design in plain language and Copilot creates and updates the model.
Astah Professional is a modeling environment for designing and documenting software systems using multiple diagram types. It supports UML (Unified Modeling Language) diagrams as well as ER diagrams, data flow diagrams, flowcharts, requirement diagrams, and mind maps. Developers can visualize system structures, model processes, and maintain project documentation within a unified diagramming workspace.
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Comprehensive UML Diagram Modeling

Astah Professional enables developers to create a wide range of diagrams based on the Unified Modeling Language (UML). Supported diagram types include class, use case, sequence, component, deployment, activity, timing, and statemachine diagrams used to model software structures and interactions.

Entity Relationship Diagram Data Modeling

The environment supports entity relationship diagrams for database design and documentation. Developers can create ER diagrams manually or generate them by importing tables from an existing database. Logical and physical data models can be represented visually.

Data Flow Diagram Process Representation

Astah Professional allows developers to build data flow diagrams that illustrate how information moves through a system or process. These diagrams help analyze inputs, outputs, and data processing relationships within software or information systems.

Flowchart And Process Modeling

Flowchart diagrams can be used to describe operational processes and workflows. These diagrams represent sequences of steps and decisions within a system, providing a visual way to document logic and operational procedures.

Requirement Diagram And Requirement Table Support

Astah Professional supports requirement diagrams and requirement tables used to define and organize system requirements. These diagrams help structure requirement hierarchies and maintain relationships between requirements and other modeling elements.

Mind Map Based Requirement Exploration

Mind maps allow teams to capture ideas and organize user requirements visually. Elements from a mind map can be converted into UML model elements such as actors or use cases, supporting the transition from brainstorming to structured system modeling.

Model Relationships And Traceability Across Diagrams

Astah Professional enables links between models across different diagrams, allowing teams to track relationships between requirements, components, and processes. These connections support traceability when managing complex system designs.

Code Generation And Reverse Engineering

The environment includes capabilities for generating source code from models and for reverse engineering existing code into diagrams. Reverse engineering supports languages such as Java, C#, and C++, allowing developers to generate class and sequence diagrams from code.

Customization Through API And Plug Ins

Astah Professional provides an application programming interface that allows developers to access model data, create diagrams, and modify models programmatically. A library of plug-ins and integrations enables further customization of the modeling environment.

Diagram Export And Documentation Integration

Diagrams created in Astah Professional can be exported in formats such as JPEG, PNG, and SVG. Diagrams can also be copied into Microsoft Office documents, printed, or included in documentation used to communicate system design.

Product Compatibility

Review the details below to ensure this product is supported within your environment.

Operating System

  • Windows Desktop
  • macOS
  • Linux

Linux Variant

  • Kernel
  • Ubuntu

Windows Desktop Version

  • Windows 11
  • Windows 10