Orange: Interactive data analysis
matplotlib: plotting with Python
High-Performance Symbolic Regression in Python and Julia
General Mission Analysis Tool
An intuitive molecular editor and visualization tool
Data Analysis, Simulations and Visualization on the Sphere
2D & 3D TeX-Aware Vector Graphics Language
Cross-platform, scientific graphics plotting library
Scientific Visualisation Made Easy
Data Visualization and Analysis
Quality Assessment Tool for Genome Assemblies
... the open-source glide computer
Autoplot is an interactive browser for data on the web
SADSA (Software Application for Data Science and Analytics)
A GUI sorting visualizer desktop application
Simple user interface for gnuplot aimed for reflectometry data
X-Ray Imaging Software for Multiple Samples
CloudSat and CALIPSO plotting tool