PlantUML is described as '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' and is a very popular Diagram Editor in the development category. There are more than 100 alternatives to PlantUML for a variety of platforms, including Windows, Web-based, Mac, Linux and Self-Hosted apps. The best PlantUML alternative is draw.io, which is free. Other great apps like PlantUML are Excalidraw, yEd Graph Editor, Dia and Freeplane.
ClassBuilder is freeware CASE tool targeted at the C++ developer, running on Win2K-XP. It lets you create, manipulate and navigate classes, class relations, class members and class methods at a high level of abstraction through a graphical user interface.
Mark makes drawing flowcharts and diagrams as easy as drawing with a pencil. It automatically converts shapes and text as you draw with Apple Pencil.
ARIS Express is based on the proven ARIS methodology and industry standards. Its intuitive user interface and the latest improvements in modeling assistances enable instant results. This free version will appeal to universities and vocational schools, as well as BPM beginners...
OCLE is a UML CASE Tool offering full OCL support both at the UML metamodel and model level.
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...
A lightweight HTML5/javascript library for UML 2 diagramming.
Alpha software. This project is in progress. Many functionalities are ready to be used. Nevertheless, some features and developments will not be neccessarily available for download.
Linkurious provides a graph visualization and analysis platform used for fraud detection, anti-money laundering, intelligence or cybersecurity. Easy to deploy and highly extensible, Linkurious Enterprise makes it easy to uncover insights hidden in complex connected data.
A Powerful idea processor.It's Open Source and Freeware. Create UML Diagrams, Network Diagrams, Flowcharts and many other types of diagrams with the versatile Dynamic Draw Software.
Aspose.Diagram is a .NET Visio Diagramming component that allows working with VSD, VSS, VST, VSX, VTX, CDW and VDX files on Mono, C#, VB.NET, ASP.NET web applications, web services and Windows applications. It enables developers to work with VSD & VDX files on ASP.
Generate diagram-rich reports and documents, instantly. Generate software architecture diagrams, network diagrams, UML diagrams, cloud diagrams and many more!
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