PlantUML

Umbrello UML Modeller is a Unified Modelling Language diagram programme for KDE. UML allows you to create diagrams of software and other systems in a standard format.

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 …

Browser based Chart and Diagram tool. Requires sign up. Free account allows one diagram to be saved. Very easy to use, professional looking. Main advantage is that diagrams can be …

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 …

Calligra Flow (formerly Kivio) is an easy to use diagramming and flowcharting application with tight integration to the other Calligra applications. It enables you to create network diagrams, organisation...

Oqto is a powerful diagram creation and editing tool available on your tablet or smart phone. With Oqto Diagram you can create flowcharts, organization charts, mind maps, finite states machines, …

Gephi is an open-source software for visualizing and analyzing large networks graphs. Gephi uses a 3D render engine to display graphs in real-time and speed up the exploration. Use Gephi …

PROCESSMAKER WILL HELP YOU Build Workflow Software Build Business analysts can model workflows utilizing an intuitive drag-and-drop interface that’s easy to use. Report Workflow Software Report ...

Nevron Diagram Designer is an advanced diagram editor powered by Nevron Diagram for .NET controls. It is suitable for creating various kinds of diagrams and performing different layout algorithms on …

NClass is a free tool to easily create UML class diagrams with full C# and Java language support.

WhiteStarUML is a fork of StarUML with an intent to revive its Delphi code base by updating code to recent Delphi editions, reducing dependence on third party components and fixing …

Create deep visual documents, adaptable and multi-level diagrams, flowcharts, concept maps, mind maps and models. Users can: - Define their own types of nodes and connectors, to reuse nomenclature, symbols,...

Violet is a UML editor with these benefits: Very easy to learn and use. Draws nice-looking diagrams. Completely free. Cross-platform. Violet is intended for developers, students, teachers, and authors who …

Graphical modelling open source UML2 tool based on Eclipse environment.

SwordSoft Layout is an desktop application that makes it very easy for you to create, preview, and manage mockups of your website, mobile application or desktop application. With so many …

ProcessOn is an easy-to-use, free online diagram designer with an extensive diagram library & social network to expand business. It’s built based on HTML & JavaScript, allowing users to create …

TopCoder UML Tool is an easy to use, consistent modeling tool for use in Design and Development competitions. The new tool was built to model sequence, class, use case, and …

The GoVisual Diagram editor (GDE) provides powerful functionality for editing and automatic layout of diagrams. Diagrams are represented in form of graphs and cluster graphs. GDE contains all the layout …

Easy diagram generator for Sequence Diagrams and Message Sequence Charts.

Mindmaps is a mind mapping tool and a brainstorming application. It allows you to order your thoughts, store ideas and bring structure into complex concepts. You can share your result …

Whether you are a Business Architect, System Architect, Developer, Analyst or Designer, Modeliosoft meets your needs through its high quality solutions for modeling, and report, architecture or code...

Graphity is a diagram editor that can be used to quickly and effectively generate drawings and to apply automatic layouts to a range of different diagrams and networks.

Grapholite is a powerful online solution for the creation of flowcharts, org charts, mind maps, Venn charts, web site structures, etc. Can be used online and offline

MindBerry is a mind-mapping software for BlackBerry smartphones. It's the ideal software for organize your thoughts, manage information overload, increase your productivity and creativity. Capture and...

Simple, clean and easy to use UML diagramming tool for MacOS X and iPad. Models! is a flexible diagramming tool. It doesn’t force you to follow strict, often useless rules …