An easy to use free graphics library for Fortran and C(C++) available on Win32 platforms using MinGw, cygwin, VC++/VF or BCC. Interactive graphics programming can be made with it. http://spdg1.sci.shizuoka.ac.jp/grwinlib/english/
Library of subroutines and functions that display data graphically. Software is available for the programming languages C, Fortran 77, Fortran 90, Perl, Python and Java. http://www.linmpi.mpg.de/dislin/
High-level, cross-platform C/C++ graphics and windowing library built on a fast x86 assembler graphics kernel. [Open Source, LGPL] http://www.tutok.sk/fastgl/
Portable 2D graphics library. Provides a set of functions for simultaneous generation of graphical output on different types of devices. http://g2.sourceforge.net/
An application to design NURBS curves and surfaces. It can also be used as an NURBS library, providing an API that could be used by other applications. http://wxnurbs.sourceforge.net/