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Umbrello

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.

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Gaphor

Gaphor is a Python-based, easy to use modeling environment. This means that you are able to create nice UML diagrams for documentation and to assist you with design decisions. Gaphor will help you...

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NClass

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....

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Chrons Web Modeler

the Chronos Web Modeller is a collaborative tool for the creation of UML models with reporting, code and document generator . CWM offer an holistic MDA/MDD approach to projects. It allows to create Web...

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WhiteStarUML

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 bugs and adding new...

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Eclipse Mode Development Tools

The Model Development Tools (MDT) project focuses on big "M" modeling within the Modeling project. Its purpose is twofold: To provide an implementation of industry standard metamodels. To provide...

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UMLGraph

UMLGraph allows the declarative specification and drawing of UML class and sequence diagrams. The current features are part of an ongoing effort aiming to provide support for all types UML diagrams.

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TopCoder UML

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 activity diagrams. On top of...

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Classbuilder

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...

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Violet UML Editor

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...

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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...

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Calligra Flow

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,...

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Dia

Dia is a GTK+ based diagram creation program for Linux, Unix, Mac OS X and Windows released under the GPL license. Dia is roughly inspired by the commercial Windows program...

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Diagramo

Online diagram software | Online diagram tool | Online diagram editor - diagrams (create, edit and share) - organization charts (create, edit and share) - network diagrams (create, edit and share) -...

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Freeplane

Freeplane is a powerful and free software for building the mind maps. It is a redesigned version of the well known FreeMind, and is created by one of FreeMind's key developers. The software is written...

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BonitaBPM

Bonita is an Open Source Business Process Management (BPM) software and Workflow software edited by the BPM company BonitaSoft. Develop process based applications easily with Bonita Open Solution.

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Graphviz

Graphviz is open source graph visualization software. It has several main graph layout programs. It also has web and interactive graphical interfaces, and auxiliary tools, libraries, and language...

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blockdiag

blockdiag and its family generate diagram images from simply text file. Features: Supports many types of diagrams block diagram (w/ blockdiag) sequence diagram (w/ seqdiag) activity diagram (w/...

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Gephi

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 to explore,...

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Visual Understanding Environment

Visual Understanding Environment (VUE) is a mind-mapping and concept-mapping tool. It is also a non-linear presentation program.

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ckwnc

ckwnc is a uml sequence diagram creation tool that uses an intuitive c-style language to automatically create uml diagrams that can be saved as an image or embedded directly into other pages

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jsUML2

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...

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Neoclipse

Neoclipse is a standalone workbench application to interact with Neo4j (database directory or server). It supports Cypher, index searches, visualisation, graph updates.

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draw.io

draw.io is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams. No login or registration are required and features include the ability to save locally...

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ThinkComposer

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,...

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PathVisio

PathVisio is a free open-source pathway analysis and drawing software that allows drawing, editing and analysing biological pathways. It provides a basic set of features for pathway drawing, analysis...

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Theory Maker

Theory Maker is a free web app by Steve Powell for making any kind of causal diagram, i.e. a diagram which uses arrows to say what contributes to what. You make the diagrams just by typing the names of...

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System Designer

System Designer uses UML, a standard, to define your model. So you probably already know how to create a model in System Designer even if you have never run it. The definition of the model is stored...

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mermaid

Ever wanted to simplify documentation and avoid heavy tools like Visio when explaining your code? This is why mermaid was born, a simple markdown-like script language for generating flowcharts, Gantt...

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viewflow

Viewflow is the workflow library based on BPMN concepts. BPMN - Business process modeling and notations - is the widely adopted industry standard for business process modeling. BPMN provides a standard...

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UML Designer

UML Designer provides a set of common diagrams to work with UML 2.5 models. The intent is to provide an easy way to make the transition from UML to domain specific modeling. This way users can continue...

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Papyrus UML

Graphical modelling open source UML2 tool based on http://alternativeto.net/software/eclipse/ environment. Papyrus is aiming at providing an integrated and user-consumable environment for editing any...

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Dynamic Draw

Dynamic Draw is useful for general drawing purposes. For example, drawing a illustration, specification and so on.

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