ZGRViewer is a small graph visualizer.Current Graphical User Interface toolkits like Swing are powerful, generic and portable, but cannot be used for some generic application classes such as graph editors, requiring programmers to use lower-level APIs such as Java2D which are more expressive but harder to use.

ZVTM is a Zoomable User Interface (ZUI) toolkit implemented in Java, designed to ease the task of creating complex visual editors in which large amounts of objects have to be displayed, or which contain complex geometrical shapes that need to be animated.

ZGRViewer Features:
1. ZVTM is able to manage a large amount of objects efficiently.
2. The underlying model is based on the metaphor of universes that can be observed through smart movable/zoomable cameras.
3. Objects are defined by visual attributes such as position, size, orientation, shape and color. When the programmer modifies the values of visual attributes, graphical representations are automatically updated (the programmer does not have to worry about the various painting/updating operations).
4. ZVTM features advanced but easy-to-use animation capabilities: each visual attribute modification can be animated through various temporal schemes (using Sun's Timing Framework since version 0.10.0).
5. ZVTM provides support for multi-layered views and object translucency (alpha channel). Objects can be seen through several views simultaneously.
6. Different types of magnification lenses (Sigma Lenses) can be activatted in views, thus enabling various focus + context representations.

Requirements:
* Java

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