To use this service, you need to subscribe to a maintenance contract. The QtiPlot team offers GNU/Linux binaries free of charge but without any guaranteed support. The packages provide all needed libraries, except Python and Qt (on Linux), which must be installed separately on your system. Ion Vasilief offers supported QtiPlot binaries as Debian packages (for Debian, Ubuntu. In order to build QtiPlot you also need qmake, which is distributed as a part of Qt. If you need Python scripting support, don't forget to download and install Python, If you want to perform ANOVA statistic calculations you must download If you need to convert random grid XYZ datasets to matrices you must download and install You need to download and install QTeXEngine. Which are shipped with QtiPlot in the "3rdparty/qwt" and "3rdparty/qwtplot3d" folders respectively. You also need to build and install the slightly modified versions of the Qwt (5.2) and You need to install the following libraries: "Free software" is also often called Open Source, FOSS, or FLOSS. To understand the concept, you should think of "free" as in "free speech", not as in "free beer". "Free software" is a matter of liberty, not price.
QtiPlot is distributed under the GNU General Public License.