SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
OriginLab - OriginLab is a data analysis tool that provide the engineers and scientist with the technical charts and system for 2D and 3D plotting and all kind of fitting including curve and peak fitting.
OriginPro - OriginLab OriginPro is a comprehensive interface-based data management platform that allows users to calculate or visualize the data insights in various fields like engineering, scientific domain, or multi-sector industrial stats.
Kst - KDE Homepage, KDE.org
RStudio - RStudio™ is a new integrated development environment (IDE) for R.
LabPlot - LabPlot is a KDE-application for interactive graphing and analysis of scientific data.