Eulumdat_3D the better Eulumdat viewer and editor.
You can view ldt files as 3D ,compare two luminaires, print a simple datasheet. From given light distribution you can create different ldt files depending on light flux and CCT
also as app under https://play.google.com/store/apps/details?id=com.riloc.eulumdat
Olex2 is visualisation software for small-molecule crystallography developed at Durham University/EPSRC. It provides comprehensive tools for crystallographic model manipulation for the end user and an extensible development framework for programmers. The project has been supported by Olexsys Ltd since 2010.
JHotDraw is a two-dimensional graphics framework for structured drawing editors that is written in Java. It is based on Erich Gamma's JHotDraw, which is copyright 1996, 1997 by IFA Informatik and Erich Gamma.
PyX is a Python package for the creation of EPS, PS, PDF and SVG files. It combines an abstraction of the PostScript drawing model with a TeX/LaTeX interface. Complex tasks like 2d and 3d plots in publication-ready quality are built out of these primitives.
Ycad is a library of CAD functions in Java. Currently only DXF is supported for reading, viewing and writing. The DXF drawing may be rendered to a Graphics object for printing or imaging.
Dynagraph is a cross-platform library and command-line tool for dynamically drawing graphs (networks, flowcharts, family trees, etc.) in reponse to continual modifications. Included are DynaDAG for directed graphs and FDP force-directed placement.
Artist is a portable 2D graphics library. Main features are: drawing primitives, bitmap blitting, alpha blending, zoom and rotation, text rendering and image file loading. It uses hardware acceleration and provides a simple and elegent API.
IMGH (IMaGe library in C++ Header files) is a simple, light-weight, and
cross-platform image processing library, that supports simple
editing and drawing, multiple pixel formats (pointers and float).
Designed for developers and researchers.
OntoViz, an ontology browser is an extension of my undergraduate honors thesis. This helps a user browse ontologies using a variety of graph drawing algorithms. The ontology can be specified using a text file, a local/remote database or a web service.
The JChemPaint Applet and Swing Application are Java programs for drawing 2D chemical structures like those found in most chemistry textbooks. It is based on the Chemistry Development Kit (cdk.sf.net). Downloads, tracker, and source code repository can be found on https://jchempaint.github.io
Dancing Networks attempts to create self-drawing diagrams by applying the laws of motion as we know them today. The process of the diagrams drawing themselves looks like a network that starts its dance in chaos but gravitates toward harmony and order.
jChart is a free Java library for drawing complex business & scientific charts. It may be used in Java applications and applets as a Swing-like GUI component, and also in servlets to publish the charts on the Web in several formats.
An object oriented Java package that can be used to store 3-D graphs and perform various functions on them, arranging nodes with a spring embedder and generating VRML output. Visit http://vrmlgraph.i-scream.org.uk for documentation and examples.