QtiPlot is a clone of Origin for data analysis and scientific plotting. License: GNU General Public License (GPL) Changes: The behavior of matrices is now Origin like: it features dual image/data view mode, support for flipping and rotating images, 2D histograms, and the possibility to save matrices as image files. The fit wizard was improved: all the fit models and the initial guesses for the fit parameters can be saved to XML files. The possibility to restrict the search range for the fit parameters was added. A preview functionality for the fit models was added. Support was added for 3D parametric surfaces. A preview option was added to the import ASCII dialog. New data may be imported as read-only columns.

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