KeyLines Graph Visualization Toolkit is mainly a Mind Mapping Tool but alternatives to it may also be UML Modeling Tools or Spreadsheet Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of KeyLines Graph Visualization Toolkit.
The PlantText tool is an online tool for quickly creating UML (Unified Modeling Language) diagrams. Unlike most tools, PlantText can build diagrams without the use of a mouse because it is based on PlantUML markup language.
vis.js is a dynamic, browser based visualization library. The library is designed to be easy to use, to handle large amounts of dynamic data, and to enable manipulation of and interaction with the data.
Visallo helps intelligence analysts, law enforcement detectives, and fraud investigators produce more rigorous and defensible conclusions by helping them discover, visualize, and understand complex relationships hidden in massive amounts of data.
Cytoscape is an open source software platform for visualizing complex networks and integrating these with any type of attribute data. A lot of plugins are available for various kinds of problem domains, including bioinformatics, social network analysis, and semantic web.