The Snack sound extension adds commands for sound play/record and sound visualization, e.g. waveforms and spectrograms. It supports in- memory sound objects, file based audio, streaming audio, WAV, AU, AIFF, and MP3 file formats, synchronous and asynchronous playback. The visualization canvas item types update in real-time and can output postscript. New commands and file formats can be added using the Snack C-API.
XPaint is an easy-to-use image editor which supports many standard and less standard paint procedures that demanding non-professional users would expect. It includes several advanced features like image processing algorithms, programmable C scripts, simultaneous editing of multiple images, and supports a wide variety of image formats.
Verse is a network protocol and client/server application architecture for multiuser realtime distributed 3D graphics applications. It uses a lightweight server to store world data, and then relies on clients to connect and use the data in various ways. Verse uses subdivision surfaces as its single geometric primitive, which both conserves bandwidth and allows very good scalability and visual quality on modern 3D hardware.
ClassyTk is an extension of Tk based on the ClassyTcl Object system. It adds a lot of improvements to Tk, ranging from drag and drop support (between Tk apps) and a configuration system to a large set of new widgets and commands, written using the object system. It also contains a GUI Builder that can be used to graphically create interfaces. It is invoked via the cbuild command in the bin directory. There are also some sample (but useable) applications created with ClassyTk: a very useable editor, a calculator, a drawing program, and more.
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.
GEF is a graph editing library that can be used to construct many, high-quality graph editing appications. It features a simple, concrete design, a Node-Port-Edge graph model that is powerful enough for the vast majority of connectied graph applications, a Model-View-Controller design based on the Swing Java UI library, and high-quality user interactions for moving, resizeing, reshaping, etc. It also supports several novel interactions such as the broom alignment tool and secltion-action-buttons.
UMLGraph facilitates the declarative specification and drawing of UML class and sequence diagrams. One can specify a class design using the Java syntax complemented by Javadoc tags. Running the UmlGraph doclet on the specification generates a Graphviz diagram specification that can be automatically processed to create Postscript, GIF, SVG, JPEG, fig, or Framemaker drawings. Similarly, sequence diagrams are specified using declarative pic macros and compiled with the GNU plotutils pic2plot program into a PNG, PNM, (pseudo) GIF, SVG, AI, Postscript, CGM, FIG, PCL, HPGL, Regis, or TEK drawing.