ArgoUML is the leading open source UML modeling tool and includes support for all standard UML 1.4 diagrams. It runs on any Java platform and is available in ten languages. ArgoUML is written entirely in Java and uses the Java Foundation Classes. This allows ArgoUML to run on virtually any platform.
ArgoUML is compliant with the OMG Standard for UML 1.4. The core model repository is an implementation of the Java Metadata Interface (JMI) which directly supports MOF and uses the machine readable version of the UML 1.4 specification provided by the OMG.
Tool Description as in http://argouml.tigris.org/
Image Credit: http://argouml.tigris.org/
ATL (ATL Transformation Language) is a model transformation language and toolkit. In the field of Model-Driven Engineering (MDE),
ATL provides ways to produce a set of target models from a set of source models. Developed on top of the Eclipse platform, the ATL Integrated Environment (IDE) provides a number of standard development tools (syntax highlighting, debugger, etc.) that aims to ease development of ATL transformations.
Tool Description as in http://www.eclipse.org/atl/
Image Credit: http://www.eclipse.org/atl/
Dia is roughly inspired by the commercial Windows program ‘Visio,’ though more geared towards informal diagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and many other diagrams.
It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.
Tool Description as in https://wiki.gnome.org/Apps/Dia/
Modelio is an open source modeling environment (UML2, BPMN2, …). Based on a 20-year track record of high end commercial products, Modelio delivers a broad-focused range of standards-based functionalities for software developers, analysts, designers, business architects and system architects.
Tool Description as in https://www.modelio.org/
Image Credit: https://www.modelio.org/
NClass is a free tool to easily create UML class diagrams with full C# and Java language support. The user interface is designed to be simple and user-friendly for easy and fast development.
Properties, enums, delegates and other language specific elements are fully supported with strict syntactical and semantical verification.
Tool Description as in http://nclass.sourceforge.net/
Image Credit: http://nclass.sourceforge.net/
Tool Description as in https://netbeans.org/
Image Credit :https://netbeans.org/
To address any specific domain, every part of Papyrus may be customized: UML profile, model explorer, diagram notation and style, properties views, palette and creation menus, and much more.
Papyrus enables model-based techniques: model-based simulation, model-based formal testing, safety analysis, performance/trade-offs analysis, architecture exploration.
Tool Description as in http://www.eclipse.org/papyrus/
Image Credit: http://www.eclipse.org/papyrus/
Umbrello UML Modeller
Umbrello UML Modeller is a Unified Modelling Language (UML) diagram program based on KDE Technology. UML allows you to create diagrams of software and other systems in a standard format to document or design the structure of your programs.Our handbook gives a good introduction to Umbrello and UML modelling.
Umbrello comes with KDE SC, included with every Linux distribution and available through your package manager and as installer for Windows and Mac OS X.
Tool Description as in https://umbrello.kde.org/
Image Credit: https://umbrello.kde.org/
Create UML class diagrams, use case diagrams, sequence diagrams, activity diagrams and object diagrams. Focus on processes with the Business Process Management diagram editor and export as BPMN2 files. Customize all properties, types, relationships like in desktop modelers.
Tool Description as in https://www.genmymodel.com/
Image Credit: https://www.genmymodel.com/
Visual Paradigm features all the UML diagrams and ERD tools essentially in system and database design. Innovative modeling tools like Resource Catalog, Transitor and Nicknamer makes system modeling easy and cost-effective. Doc.
Composer lets you produce detailed design specification ready to use in discussion with just a few clicks.
Tool Description as in https://www.visual-paradigm.com/features/
Image Credit: https://www.visual-paradigm.com/features/
Umbrello UML Modeller