Tulip is an information visualization framework dedicated to the analysis and visualization of relational data. It aims to provide the developer/user with a complete library/software, supporting the design of interactive information visualization Visualization, drawing and editing of graphs of any size or complexity.

It allows navigation through geometric operations as well as the extraction of subgraphs and the enhancement of the results obtained by filtering.
Written in C++ the framework enables the development of algorithms, visual encodings, interaction techniques, data models, and domain-specific visualizations.
One of the goal of Tulip is to facilitates the reuse of components and allows the developers to focus on programming their application. This development pipeline makes the framework efficient for research prototyping as well as the development of end-user applications.

Features:
1. 3D visualizations
2. 3D modifications
3. Plug-in support for easy evolution
4. Building of clusters and navigation into it
5. Automatic drawing of graphs
6. Automatic clustering of graphs
7. Automatic selection of elements
8. Automatic Metric coloration of graphs

The license of this software is Free, you can free download and free use this graphing software.