Diagram Designer Alternatives

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.

Online diagramming application

Build powerful web apps with no code, assisted by AI.

Try for free freemium

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.

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

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.

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

StarUML

UMLet - Free UML Tool for Fast UML Diagrams

Lightweight, powerful, easy to use, UML tool

freemium €59.0 / One-off (Standard Edition)

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

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