xd3d is a simple scientific visualization tool designed to be easy to learn. It can plot 2d and 3d meshes, with shadowing, contour plots, vector fields, iso-contour (3d), as well as 3d surfaces z=f(x,y) defined by an algebraic expression or a cloud of points. It generates high quality vector PostScript files for scientific publications and still or animated bitmap images. It includes the graph plotter xgraphic.
xfarbe is a program for visualizing 2D-arrays. Features include: Nonlinear interpolation with bicubics on a rectangular grid, Computation of contour lines, piecewise in the rectangular cells, and Area filling with colors and patterns between the contour lines.
Xgfe is a GUI front end to the Gnuplot plotting package. Xgfe tries to make your life with Gnuplot a little easier. It does not currently support every option of Gnuplot, but it supports many things. The development philosophy is a tasked oriented approach.
XGobi is a data visualization system for viewing high-dimensional data. XGobi's primary views are SCATTERPLOTS and LINE DRAWINGS whose points and lines can be brushed and identified across LINKED VIEWS.
XGvis is an interactive visualization system for proximity data as well as for graphs and networks.
XphaseD is a freeware phase plane plotter for UNIX X-windows systems. It plots solutions of 2-d plane autonomous ODE systems.
xyplot is a plotting and data analysis program for use by students, teachers, scientists, and engineers. It displays the results from your experiments or calculations in an interactive graphical environment.
zimg generates gif images from almost arbitrary formatted f(x,y) data. Both plain unformatted ascii and a variety of binary input formats are supported. Output options include variable logarithmic color mapping VLCM and contour graphics.