I looked at the different options for plotting functions (or other types of graphs) in an interactive window. I mostly use wxWidgets but I'd be open to any other "interfaces".
wxPlot: Not updated since 2006. But it would be a good candidate if it was...
wxMathPlot: Very new, not mature, few features (still active?)
libgraph: Outdated, not rebust, 2D only and outputs images only.
koolplot: Too basic, no control over the created window.
EasyBMP: Very basic, only images output.
plotutils: Command line only.
plplot: C and C++ API are barely maintained. It is in fact on this that wxPlot is based. Could be a could candidate also if C and C++ interface we're updated.
Any comments? Ideas?