LabPlot - LabPlot is a KDE-application for interactive graphing and analysis of scientific data.
SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
DataMelt - DataMelt (DMelt), a free mathematics and data-analysis software for scientists, engineers and students.
IBM SPSS Statistics - IBM SPSS Statistics is software that provides detailed analysis of statistical data. The company behind the product practically needs no introduction, as it's been a staple of the technology industry for over 100 years.
Aveloy Graph - Aveloy Graph is an application for graph creation / data visualization
RStudio - RStudio™ is a new integrated development environment (IDE) for R.