ygraph

YGraph is an open-source software library for visualizing and analyzing graphs and networks. It provides a client-side toolkit for building interactive network visualizations in web applications, with primary bindings for JavaScript and TypeScript. The library models graphs as nodes and edges, each carrying arbitrary metadata, enabling a wide range of analytical and presentation tasks.

Core features include multiple layout algorithms (force-directed, hierarchical, radial), interactive rendering, and styling. Rendering is implemented using scalable vector graphics (SVG) with optional Canvas or WebGL backends to improve performance on large graphs. The library supports panning, zooming, node dragging, selection, and contextual tooltips, along with keyboard shortcuts for accessibility.

YGraph provides a flexible data model and import/export capabilities. It accepts graph data in JSON-based formats, with optional support for standard graph exchange formats such as GraphML or CSV for edges. It also offers a plugin system and theming to tailor appearance and behavior across projects. Developers can implement custom layouts, renderers, and interaction handlers through a well-defined API.

Typical use cases include visualization of social networks, dependency graphs, transport networks, and biological networks, as well as interactive dashboards. The project emphasizes portability, modularity, and ease of integration with existing web stacks. It is maintained by a community of contributors and offers comprehensive documentation, examples, and test suites to aid adoption.

See also: D3.js, Cytoscape, Graphviz.