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What is 3SL Cradle?

You have the ability to oversee your needs, epics, and user stories through a series of sprints. Each sprint can incorporate your preferred methods for requirements management, model-based systems engineering (MBSE), and test management. Additionally, you have the option to implement formal change control, configuration management, and change tracking. Cradle®, our comprehensive requirements management and systems engineering software, seamlessly integrates your entire project lifecycle into one highly scalable, multiuser solution. Whether your projects are large or small, Cradle is equipped to meet all your requirements management, model-driven, defect tracking, and test management needs. With its unmatched features, flexibility, user-friendliness, and affordability, Cradle stands out as an ideal choice for those who are new to agile methodologies, systems engineering, or requirements management. Its robust capabilities ensure that you can efficiently navigate project complexities while maintaining a streamlined workflow.

What is Astah SysML?

Astah SysML is a desktop SysML v1 modeling application from Change Vision, Inc. for organizations adopting model-based systems engineering (MBSE). It gives engineering teams the core SysML diagrams, including requirement, block, parametric, and behavior diagrams, in a tool that new users can learn quickly. Because designs are stored as models, an update made in one place carries through to every related diagram, which keeps system documentation consistent as a project evolves. Existing models can be exchanged through XMI and with Cameo Systems Modeler. Version 11.0 includes AI Chat Copilot, which runs on your organization's own API key for OpenAI, Azure OpenAI, Claude, or Gemini, or for an OpenAI-compatible service, and local MCP server integration for connecting AI agents. Licensing is available as a 1-year license ($140) or a 1-year floating license ($270). Astah SysML runs on Windows and macOS, and a 20-day free trial is available.

Media

Media

Integrations Supported

Microsoft Excel
Microsoft Project
Microsoft Visio
Microsoft Word

Integrations Supported

Azure OpenAI Service
Cameo Systems Modeler
Claude
Gemini
OpenAI

API Availability

Has API

API Availability

Has API

Pricing Information

$470.00/one-time/user
RM Desktop - $470
RM Pro - $545
SE Desktop - $625
SE Pro - $700
Free Trial Offered?

Pricing Information

$140/year
1-year license: $140. 1-year floating license: $270. 20-day free trial.
Free Trial Offered?

Supported Platforms

SaaS
Windows
Linux

Supported Platforms

Windows
Mac
On-Prem

Customer Service / Support

Standard Support
Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub

Company Facts

Organization Name

3SL

Date Founded

1987

Company Location

United Kingdom

Company Website

www.threesl.com

Company Facts

Organization Name

Change Vision, Inc.

Date Founded

2006

Company Location

Tokyo, Japan

Company Website

astah.net/products/astah-sysml/

Categories and Features

Application Lifecycle Management

Defect Tracking
Project Management
Release Management
Requirements Review
Task Management
Test Case Tracking
Version Control

Requirements Management

Automated Test Generation
Change Management
Collaboration
History Tracking
Prioritization
Reporting
Status Reporting
Status Tracking
Summary Reports
Task Management
To-Do List
Traceability
User Defined Attributes

Risk Management

Alerts/Notifications
Dashboard
IT Risk Management
Response Management
Risk Assessment

Test Management

Automation Integration
Pass/Fail Results Tabulation
Reporting / Analytics
Requirements Management
Test Scheduling
Test Tracking

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