QtiPlot

QtiPlot is a cross-platform data analysis and scientific visualization application, similar in functionality to Origin and Igor Pro. It provides a graphical user interface (GUI) for creating plots and analyzing data. QtiPlot supports a variety of plot types, including line plots, scatter plots, bar plots, and contour plots.

The software allows users to import data from various file formats, perform mathematical operations on data sets, fit data to functions, and generate publication-quality graphs. It incorporates features for data smoothing, FFT analysis, linear and nonlinear curve fitting, and statistical analysis. QtiPlot uses a spreadsheet-like interface for data manipulation and management.

QtiPlot is written in C++ and uses the Qt framework for its GUI, enabling it to run on Windows, macOS, and Linux operating systems. It is free software, distributed under the GNU General Public License (GPL). The program supports scripting using Python, which allows users to automate tasks and customize the software's functionality. QtiPlot is often used in scientific research, engineering, and data analysis across various fields. Its key strength lies in its ability to combine powerful data analysis features with a user-friendly interface.