Software Ideas Modeler Alternatives

Online diagramming application

Open Source

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.

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yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.

StarUML

OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.

Open Source

Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.

UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.

Umbrello UML Modeller is a Unified Modelling Language diagram programme for KDE.

UMLet - Free UML Tool for Fast UML Diagrams

ArgoUML, free and safe download. ArgoUML latest version: Open-source diagramming application for personal computers. ArgoUML is a program that allows users to create complex and professional diagrams.

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

Diagram Designer