The best open source alternative to yEd Graph Editor is LibreOffice - Draw. If that doesn't suit you, our users have ranked more than 100 alternatives to yEd Graph Editor and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to yEd Graph Editor are Dia, Freeplane, Mermaid and PlantUML.
Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is a an excellent package for producing technical drawings, general posters, and much else.
Open-source diagram editor supporting Linux, Windows, Unix, and Mac OS X, with features for constructing entity relationship, UML, flowchart, and network diagrams, customizable with XML-defined shapes, extensibility, and a GTK+-based graphical user interface.
Freeplane is a powerful and free software for building mind maps. It is a redesigned version of the well known FreeMind , and is created by one of FreeMind's key developers.
Freeplane is more a mapping tool
This alternative is disputed. Freeplane is a legitimate yEd Graph Editor alternative, but it might have issues that some users think are important.
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 charts and sequence diagrams from text via JavaScript.
PlantUML is an 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.
Gephi is the leading visualization and exploration software for all kinds of graphs and networks. Gephi is open-source and free.
Gephi is not a utility for drawing general graphs
Efficient web-based tool for constructing high-quality commutative diagrams. Offers LaTeX export with embedded links, intuitive interface supporting both mouse and keyboard inputs, and features like multiple selections, macro support, and smart label alignment.
Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design...
Visual Understanding Environment (VUE) is a mind-mapping and concept-mapping tool. It is also a non-linear presentation program.
Open-source PWA for isometric 3D diagramming with offline use, no sign-in, React and Isoflow codebase, auto-saving, privacy-focused local data, import/export as JSON, Docker optional storage, multilingual support, available on Mac and Linux.
Feature-rich, open-source Wireflow offers a collaborative platform for online creation of complex user flow prototypes. Ideal for team work in UI design, wireframing, and mind mapping, promoting idea sharing in real-time environment aided by modern whiteboard features.
Gaphor is a WYSIWYG (What You See Is What You Get) UML and SysML modeling environment easy to use that will help you create your applications.
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Freeplane is an excellent mind mapping tool, not a diagram and flowchart drawing tool.