JaxoDraw: Feynman Diagrams made easy!
Draw vector graphics to scale using a descriptive language
Toolkit for working with and mapping geospatial data
A widely used tool for visual exploration of scientific literature.
Optical Design Software for simulating systems of lenses, prisms, etc.
Penthode simulates, draw and plot electrical power distributions
Free data acquisition and data visualization cross-platform software
PIVOT is a simple yet flexible visualization data tool
graphICs is a converter transforming GDS II-data to Asymptote-code