Top Alternatives to Origin

Gnuplot is a portable, command-line driven graphing utility for interactive and non-interactive use. It can generate various plots of functions, data, and data fits in two and three dimensions. Widely used in scientific settings, it supports numerous output formats.

Python(x,y) is a comprehensive, free and open-source development environment for scientific and engineering tasks using Python. It bundles numerous libraries and tools for numerical computation, data analysis, visualization, and more, making it a powerful alternative to commercial software.

QtiPlot is a versatile and cross-platform application designed for scientific data analysis and high-quality data visualization. It offers an intuitive graphical interface for creating various types of plots and powerful tools for curve fitting, data manipulation, and scripting.

SciDAVis is a free and open-source application for scientific data analysis and visualization, providing powerful tools for plotting and data manipulation specifically designed for scientists and engineers.

Plotly is an open-source graphing library that makes interactive, publication-quality graphs online. It supports numerous chart types and integrates seamlessly with Python, R, MATLAB, and more, enabling users to create and share complex data visualizations with ease.

Graph is a powerful, open-source application designed for visualizing and analyzing mathematical graphs in a Cartesian coordinate system. It's a versatile tool for students, educators, and anyone needing to plot functions and data points easily.