OriginPro, GeoGebra, GnuPlot, QtiPlot, NumeRe, python(x,y), DataMelt, Data Analysis Tool, Golden Software Grapher, MagicPlot, Veusz, Aveloy Graph, Graphmatica, pro Fit, Matplotlib, IGOR Pro, Lybniz, Autograph, LabPlot, GeoGebra CAS Calculator, jHepWork, Core Plot, MagicPlot Viewer are some alternatives to SciDaVis.