The best open source alternative to yEd Graph Editor is draw.io. 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 LibreOffice - Draw, Dia, Freeplane and PlantUML.
Graphs is a simple, yet powerful tool that allows you to plot and manipulate your data with ease. You can import data from two-column files or generate it via an equation. All data can be manipulated using a variety of operations such as the ability to select, cut, translate...
A Powerful idea processor.It's Open Source and Freeware. Create UML Diagrams, Network Diagrams, Flowcharts and many other types of diagrams with the versatile Dynamic Draw Software.
Diagramo is an online flowchart software
PathVisio is a free open-source pathway analysis and drawing software that allows drawing, editing and analysing biological pathways.
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.
Neoclipse is a standalone workbench application to interact with Neo4j (database directory or server). It supports Cypher, index searches, visualisation, graph updates.
Simple schematic/diagram editor with focus on quick diagram generation with high quality graphics.
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They have pretty much different purposes.