QtiPlot - Data Analysis and Scientific Visualisation

for the post in french:
http://stephane-mottin.blogspot.fr/2013/02/le-logiciel-qtiplot-est-un-logiciel.html

Features:

• Cross platform: works natively on Windows, Mac OS X and Linux/Unix systems
• Fully Python scriptable
• OpenGL based 3D plotting
• Publication quality plots and easy export to various image formats (EMF, EPS, PS, PDF, SVG, BMP, JPG, PNG, TIFF, etc ...)
• Easy integration with LaTeX typesetting system
• Powerful and versatile spreadsheets with column-logic calculations and easy import/export of multiple files
• One-click access to extensive built-in data analysis routines
• Advanced statistical analysis: Student's t-Test, ANOVA, chi-square test for variance, normality test (Shapiro-Wilk)
• Linear and nonlinear curve fitting with weighting and estimation of statistical errors of the fit-parameters
• Multi-peak fitting
• Image analysis tools
• Templates support: all settings for plots, tables and matrices can be saved and restored later on for a fast editing process
• Project files based on folders, a powerful project explorer with built-in drag and drop and searching facilities
• Full import of OriginLab® Origin projects, Excel workbooks and Open Document Format spreadsheets, dBase, MySQL, SQLite and Microsoft Access databases

Operating system	Architecture	Download File	Required libraries	Limitations
Linux	x86	qtiplot-0.9.8.7.tar.bz2	None	- no Python scripting support*
Windows	win32	qtiplot-0.9.8.9-demo.exe	None	- saving to project files is disabled - usable for maximum 10 minutes per session
Mac OS X	Universal	qtiplot-0.9.8.9-demo.pkg.zip	Python 2.5	- saving to project files is disabled - usable for maximum 10 minutes per session

* limitation due to the fact that it is impossible to provide a generic Linux binary with Python support included

QtiPlot cross platform source code (no technical support provided):

• qtiplot-0.9.8.9.zip
• qtiplot-0.9.8.9.tar.bz2

Miscellaneous:

• Manuals
• Translations
• 3D colormaps
• SVN

Related software from ProIndep Serv Srl:

• EmfEngine, a paint engine enabling the export of QPainter grafics to Windows Enhanced Metafiles (.emf)
• QTeXEngine, a paint engine enabling the export of QPainter grafics to TeX
• liborigin2, a library for reading OriginLab project files
• libqti, a library providing Qt widgets and components

Ref:
http://soft.proindependent.com/qtiplot.html