astah Community Edition Alternatives

Lucidchart

Lucidchart is an online diagram and flowchart software that supports Microsoft Office Visio import and can work on any operating system. The easiest way to draw flowcharts, wireframes, UML diagrams, network diagrams, mind maps, iPhone mockups, site maps and more.

Features:

• Real time collaboration
• Team Collaboration
• Charts
• Flow chart
• General-purpose diagramming
• UI Design
• Prototyping
• Real time collaboration
• Export to PDF
• Scalable UI
• Sequence Diagrams
• UML diagrams
• Visitor management
• Web-Based
• Wireframing

PlantUML

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others. Mostly based on Graphviz. Can render various diagram syntax such as PlantUML, Dot, and Ditaa.

Features:

• Create UML entities
• Flow chart
• Portable
• Text Based Format
• UML diagrams
• VCS Friendly
• Workflow

StarUML

StarUML is a program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. The goal of the StarUML project is to build a software modeling tool and also platform that is a compelling replacement of commercial UML tools such as Rational Rose, Together and so on.

Features:

• Sequence Diagrams
• Class Diagrams
• Entity Relationship Diagrams
• Export to PDF
• UML diagrams

Enterprise Architect

Sparx Systems’ flagship modeling platform, Enterprise Architect, provides robust support for enterprise-wide, cloud-enabled collaboration that captures an integrated view of what is, what will be, and the journey there.

Features:

• Database reverse engineering
• UML diagrams
• Class Diagrams
• Component Diagrams
• Requirements management
• Sequence Diagrams

Umbrello

Umbrello is a Unified Modelling Language (UML) modelling tool and code generator. It can create diagrams of software and other systems in the industry-standard UML format, and can also generate code from UML diagrams in a variety of programming languages.

Visual Paradigm

Visual Paradigm for UML (VP-UML) is a UML design tool and UML CASE tool designed to aid software development. VP-UML supports key modeling standards such as Unified Modeling Language (UML) 2.4, SysML, ERD, DFD, BPMN 2.0, ArchiMate 2.0, etc. It supports software development teams in requirements capturing, software planning (use case analysis), code engineering, class modeling, data modeling, etc. A Community Edition is available for FREE for non-commercial use.

Features:

• BPMN2 animation
• Diagrams
• Entity Relationship Diagrams
• Ide integration
• SAML Single Sign-On
• User story mapping
• Website wireframing
• Wireframing

UMLet

UMLet is an open-source UML tool with a simple user interface: draw UML diagrams fast, export diagrams to eps, pdf, jpg, svg, and clipboard, share diagrams using Eclipse, and create new, custom UML elements. UMLet is a UML tool aimed at providing a fast way of creating UML diagrams. UML elements are modified using text input instead of pop-up dialogs. Elements can be modified and used as templates; this way, users can easily tailor UMLet to their modeling needs.

Features:

• Content Templates
• Diagrams
• Drag n drop
• Plugins

Software Ideas Modeler

Lightweight, powerful, easy to use, UML tool Software Ideas Modeler is a lightweight and powerful CASE tool. It supports UML 2.2 diagrams and a lot of other ones. Software Ideas Modeler is freeware (for non-commercial use). Commercial user may use this software only after buying a license. - Easy and fast drawing: auto alignment, layouts, grid, auto scrolling - UML 2.

Modelio

Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI. It allows to draw all UML2 diagrams and specific diagrams for business process modeling. It is easy and powerful with the capacity to add new functionalities to the application. In fact, it is possible to generate and reverse engineering source code (Java, ...), generate web documentation or work with other modeling languages and standards (SysML, TOGAF, ...).

Features:

• Portable
• SysML

Papyrus UML

Graphical modelling open source UML2 tool based on Eclipse environment. Papyrus is aiming at providing an integrated and user-consumable environment for editing any kind of EMF model and particularly supporting UML and related modeling languages such as SysML and MARTE. Papyrus provides diagram editors for EMF-based modeling languages amongst them UML 2 and SysML and the glue required for integrating these editors (GMF-based or not) with other MBD and MDSD tools.