Robochart makes drawing all types of flow diagrams, such as data flow diagrams, UML, flow charts, and org charts fast and easy. Drag and drop shapes and lines from a large library, add text in selectable fonts and colors, and modify the diagram with direct manipulation. Output formats include PostScript, MIF. and HTML with images and maps.
SaVi is satellite visualization software that lets you create, run, examine, and modify satellite orbits in two and three dimensions. Simulations of Iridium, Globalstar, Galileo, GPS, and other satellite constellations are included. SaVi requires Tcl and Tk on a system with Unix libraries. SaVi works well with the 3D renderer Geomview. Geomview is optional, though recommended for its 3D rendering capabilities.
white_dune is a graphical VRML97/X3DV editor, simple NURBS/Superformula 3D modeller, animation tool, and VRML97/X3DV commandline compiler in development. VRML97 (Virtual Reality Modeling Language) is the ISO standard for displaying 3D data over the Web via browser plugins ("HTML for realtime 3D"). X3DV is the direct successor of VRML97. VRML97 and X3DV have support for animation, real-time interaction, and multimedia (images, movies, and sounds). white_dune can read, create, and display VRML97/X3DV files and let the user change the scenegraph/fields. It also has support for stereoscopic view via "quadbuffer"-capable stereo visuals, and support for 3D input devices like a joystick, spaceball, or magnetic tracker.
PDFMap is a command line tool and Python library which eases the creation of very high quality maps in PDF format. You can place objects on the maps. Each object can be represented by either a shape or an image, and is scaled and rotated to reflect its original dimensions and orientation. You can make each object clickable in Adobe Acrobat Reader (e.g., to access a Web-enabled application from which you've extracted the data used to create the map).