SigmaPlot is a proprietary software package for scientific graphing and data analysis.

[1] The software can read multiple formats, such as Microsoft Excel spreadsheets, and can also perform mathematical transforms and statistical analyses.

A single, perpetual product license costs between $700 and $1300 depending on academic, corporate, or government affiliation.

[7] The main competitors of SigmaPlot are currently Origin and GraphPad Prism.

Open-source projects inspired by Origin include QtiPlot (prior to v0.9.9, now proprietary) and SciDAVis.