Aveloy Graph - Aveloy Graph is an application for graph creation / data visualization
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.
QtiPlot - QtiPlot is a professional scientific data analysis and visualisation solution.
DataMelt - DataMelt (DMelt), a free mathematics and data-analysis software for scientists, engineers and students.
Cradle - 3SL Cradle is a requirements management and systems engineering software tool.