The Qt XInput Extension is a C library adding support for XInput devices (like tablets or joysticks) to Qt-based X11 applications. QXi supports devices with up to six valuator axes in absolute mode, up to 32 buttons, and any number of keys. It is built using autoconf and libtool, and comes with a simple example application.
pkgbuild is a graphical development environment for Red Hat's RPM packaging format. It is designed to allow easy building and testing of RPM SPEC files. This is in the hope that more people will build and distribute quality RPMs. If your new to RPM it is important to note, you don't have to write an application to package it. You can package and redistribute any free software that the license allows open distribution.
picoTK is a C GUI toolkit that requires only a minimum of memory resources. It is intended for embedded system use, especially for (but not limited to) the RTEMS realtime kernel. It is in no way comparable featurewise to a "real" full blown windows toolkit like Qt or nanoX; it rather provides simple drawing primitives like lines, filled rectangles, characters, and pixmaps. (But that is what many embedded applications might ask for.) It directly works on tailored "framebuffer" hardware. A Linux framebuffer emulator is supplied as part of the kit, making evaluation (and emulation!) possible without having a realtime OS and custom hardware.
Petite Chez Scheme is a freely distributable interpreted version of Chez Scheme, a high-performance implementation of ANSI Scheme with numerous extensions. Petite Chez Scheme may be used as a run-time environment for compiled Chez Scheme applications or as a stand-alone Scheme system. With the exception that the compiler is not present, Petite Chez Scheme is completely compatible with Chez Scheme.
Memchan is an extension library to the script language Tcl, as created by John Ousterhout. It provides two new channel types for in-memory channels and the appropriate commands for their creation. They are useful to transfer large amounts of data between procedures or interpreters, and additionally provide an easy interface to on-the-fly generation of code too. No need to set or append to a string, just do a simple puts.
MathASM (MASM) is a scripting language similar to various (macro) assemblers but somewhat simplified and adjusted to specific tasks. The adjective "mathematical" comes from an early stage of its development, when its task was building simple mathematical scripts which would probably perform some calculations and write them out. As the program developed, more and more instructions were added from the "real" assemblers, so MASM now has a large set of instructions for various applications.