JUDO is a Java IDE for children and beginning programmers. It is very easy to use and has a very simple interface. It was designed to be used as a teaching aid for teaching programming classes to children. The programs you create with JUDO can be graphical, text input/output, or both. All you need to do to write a JUDO program is write a simple void main() function.
graphviz is a set of graph drawing tools and libraries. It supports hierarchical and mass-spring drawings; although the tools are scalable, their emphasis is on making very good drawings of reasonably-sized graphs. Package components include batch layout filters and interactive editors for X11, Java, and a TCL/tk extension. The batch filters can be configured as a web visualization service (using GIF and click-maps). Typical applications include display of finite state machines, software diagrams, database schemas, and communication networks.
pngcrush is an excellent batch-mode compression utility for PNG images. Depending on the application that created the original PNGs, it can improve the file size anywhere from a few percent to 40% or more (completely losslessly). The utility also allows specified PNG chunks (e.g. text comments) to be inserted or deleted, and it can fix incorrect gamma info written by Photoshop 5.0 as well as the erroneous iCCP chunk written by Photoshop 5.5.
Orfeo Toolbox (OTB) is a high resolution remote sensing image processing library. It contains a set of algorithmic components which allow the user to capitalize on methodological know how, and therefore use an incremental approach to profit from the results of methodological research. OTB is made of a set of basic elements (a C++ class API) and utilities (independent programs built upon the base API).
trx is a toolset for broadcasting live audio from Linux. It sends and receives encoded audio over IP networks, via a soundcard or audio interface, and can be used for point-to-point audio links or multicast (e.g., private transmitter links or audio distribution). High-quality wideband audio (such as music) can be sent with low latency and fast recovery from dropouts.
Asunder is a graphical audio CD ripper and encoder for Linux. You can use it to save tracks from an audio CD as WAV, MP3, Ogg, FLAC, Opus, WavPack, Musepack, AAC, or Monkey's Audio files. It has CDDB support and can create M3U playlists. It's independent of any desktop environment. It can rip and encode at the same time. It aims to make CD ripping as quick and easy as possible.