vsfplot is a 2D vector and scalar field plotter. It features Line Integral Convolution (LIC) on data, curvilinear scaled arrows following the flow lines, a mixed mode (scalar field map with overlaid vector field), handling of missing data to not interfere with the flow lines, generation of Scalable Vector Graphics (SVG) files (which are easily editable and convertible while preserving the best quality for inclusion in a PDF scientific article), and a color palette designed so the flows are uniformly readable when printed as greyscale.
StabieDraw is a simple 2D vector drawing program for creating illustrations in PDF format. The program is based on an IC layout editor and the interface will probably be most familiar to people in the IC industry. It has a Tcl interface for creating and modifying the shape objects as well as a traditional interactive GUI, though it is almost required to put the window manager into focus follows mouse mode to use this program. Objects include rectangles, paths, polygons, circles, donuts, references, and programmable objects.