Tux Paint is a simple and entertaining drawing program geared towards young children. It has a simple interface, sound effects, and a cartoon character (Tux, the Linux penguin). Along with drawing brush strokes, lines and shapes, you can also enter text and place "rubber stamp" (or "sticker") images on the picture. Tux Paint is extensible, and could be useful in an educational environment (such as a grammar, elementary, or grade school). It's portable across numerous platforms, and runs well even on slower systems like the Pentium 133MHz.
skstream is a network transport library written in C++ using the iostream interface. It provides classes for handling TCP socket connections. It is derived from the FreeSockets library by Rafael Guterres Jeffman. Its primary use to the WorldForge project, who maintain this version, is as a transport for Atlas-C++, the standard Atlas protocol implementation.
Privoxy is a Web proxy based on Internet Junkbuster with advanced filtering capabilities for protecting privacy, filtering Web page content, managing cookies, controlling access, and removing ads, banners, pop-ups, and other obnoxious Internet junk. Privoxy has a very flexible configuration and can be customized to suit individual needs and tastes. Privoxy is useful for both stand-alone systems and multi-user networks.
CinePaint is a deep paint image retouching tool that supports higher color fidelity than ordinary painting tools. CinePaint is used to retouch feature films and for professional photography. CinePaint opens high fidelity image file formats such as DPX, 16-bit TIFF, and OpenEXR, and conventional formats like JPEG and PNG. It has a flipbook for movie playback of image sequences in RAM. It supports 8-bit, 16-bit, and 32-bit color channels, HDR, and CMS.