yEd

yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams. Create diagrams manually, or import your external data for analysis. Automatic layout algorithms arrange even large data sets with just the press of a button. yEd Graph Editor is freely available and runs on all major platforms: Windows, Unix/Linux, and macOS.

Features and Highlights

• Interactive Hierarchical Layout can be used to interactively layout hierarchical or pseudo-hierarchical scenarios.
• Hierarchical Layout can be used to perfectly visualize hierarchical or pseudo-hierarchical scenarios.
• Orthogonal Layout produces clear representations of complex networks.
• Organic Layout and Smart Organic Layout produce clear representations of complex diagrams like ER-diagrams, UML diagrams, and many more.
• Organic Edge Router reroutes edges in existing drawings organically.
• Orthogonal Edge Router can reroute edges in existing drawings orthogonally.
• Circular Layout portrays interconnected ring and star topologies perfectly.
• Tree Layout can be used to visualize tree-like structures in many different ways.
• The tree layout algorithms can also be used on graphs that are almost like trees.
• a customizable workplace lets you arrange your tool windows to your needs
• table-like property editors allow you to configure the graphical properties easily
• Internationalization: yEd has been localized in English, German, and partially in Japanese
• a sophisticated print preview allows you to preview the printing results (especially useful for poster-printing)
• Session Management: yEd remembers and manages your settings
• Undoability support
• Clipboard facility
• Keyboard shortcuts for most of the functions
• Integrated help system
• Full support for the YGF file format. The native file format.
• Full support for the XML-based GraphML file format.
• Full support for the GML graph file format. GML is a popular text-based graph file format.
• Full support for the XML-based GML graph file format. This is a variant of the GML language that uses XML syntax.
• Import of arbitrary XML files. An XSLT stylesheet must be given that transforms the XML input into a valid GraphML. Predefined stylesheets for Ant build scripts, the OWL Web ontology language, and others are included.
• Export to the SVG vector graphics file format.
• Export to the Windows Meta File (WMF) file format. A vector graphics format used in almost any Windows application.
• Export to JPG and GIF file formats. Export large images as multiple images and HTML tables also supported!
• Export to BMP (on Windows machines) and PNG file formats.

Also Available: Download yEd for Mac