ZeScript/ZeGraph

ZeGraph is an open-source freeware designed for scientific data visualization. It is small, fast, and easy to use. The core library is written in C++ for high performance, using OpenGL as the rendering engine. Jiye Zeng developed ZeGraph as a personal library to overcome difficulties encountered in 3D data visualization in his environmental research works.

ZeGraph library can be linked to your C/C++ program directly. The developer has embedded ZeGraph in ZeScript. Here are some features of ZeGraph:

Make 2D or 3D scientific plots;
Save offscreen image to various image formats;
Send offscreen image to client's web browser in online application;
Render images to GIF animations;
Use an offscreen image directly as texture;
Output to window for display or animation;

ZeScript is easy to extend. It has a powerful feature allowing redefinition of all operators for user objects, which makes it possible, for example, to handle matrix naturally like these: a[i,j]=b; c=a[i,j]; a[a>0]=0; and etc. Several library extentions have been added to

Create simple graphic user interfaces;
Manipulate data matrix;
Read and write binary data in various formats, e.g., GRIB, netCDF, and HDF.
Use databases.

Now the software is being used by METEX web application server to handle SOAP and CGI requests.