QtiPlot

QtiPlot is a user-friendly, platform independent data analysis and visualization application similar to the non-free Windows program Origin.

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
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 with Gaussian, Lorentzian and Psedo-Voigt peak profiles
Image analysis tools
Project files based on folders, a powerful project explorer with built-in drag and drop and searching facilities
Interoperability with OriginLab®: full import of Origin projects and export of QtiPlot projects as Origin C files
Easy data exchange with Microsoft Excel and main free office suits (LibreOffice and Appache OpenOffice)
Import of Matlab files, LabVIEW TDMS files, dBase, MySQL, SQLite and Microsoft Access databases

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disuser Edited 2022-09-23

As other reviewers said, the application is no longer open-source and if you want to use it, you have to pay for it (except for the limited demo version). Which is fine, if that's what you want, but for the rest of us LabPlot may be a better choice.
emree35 Posted 2021-12-16

This is demo software and should be removed from this platform.

2 users found this review helpful.
doublehapps Posted 2020-12-22

Not usable! This is a demo version with limited itme and usuage. At least an old full version must be uploaded. This demo version needs to be removed from SourceForge.

4 users found this review helpful.
masif321 Posted 2020-08-02

If this software is no longer freeware or in Public domain remove it from here. Sourceforge hosts only free to use software and tools.

3 users found this review helpful.
tw17 Edited 2020-02-17

There are other plotting softwares for macOS, usually they are very expensive. Qtiplot is an amazing software with an affordable price. Although SciDavis is free software, Qtiplot is much better maintained, and has less bug. By far, it works perfectly. It is a good alternative for Origin for macOS users. I would like to pay ~20 bucks for supporting the developers to further improve this amazing software. I hope the price for the future versions should still be affordable too. Keep going! How about Qtiplot for iPadOS? More and more people use ipad pro in school, if Qtiplot will be available for ipados, it’ll be fantastic!