Principia Software Links

	Linux is a free Unix-type operating system originally created by Linus Torvalds with the assistance of developers around the world. Linux is an independent POSIX implementation and includes true multitasking, virtual memory, shared libraries, demand loading, proper memory management, TCP/IP networking, and other features consistent with Unix-type systems. Developed under the GNU General Public License, the source code for Linux is freely available to everyone. A well packaged CD-ROM that allows easy installation of Linux on Intel, SPARC and Alpha hardware is sold as Red Hat Linux.
	KDE is a powerful graphical desktop environment for Unix workstations. It combines ease of use, contemporary functionality and outstanding graphical design with the technological superiority of the Unix operating system. KDE is a completely new desktop, incorporating a large suite of applications for Unix workstations. While KDE includes a window manager, file manager, panel, control center and many other components that one would expect to be part of a contemporary desktop environment, the true strength of this exceptional environment lies in the interoperability of its components.
	Xi Graphics sells a powerfull line of X servers that work well with Linux and KDE. Their Accelerated-X Display Server runs on Intel and Alpha hardware, and supports the latest display hardware.
	The GNU Project started in 1984 to develop a complete free Unix-like operating system. Variants of the GNU system, using Linux as the kernel, are now widely used; though often called ``Linux'', they are more accurately called GNU/Linux systems. The Free Software Foundation is a tax-exempt charity that raises funds for work on the GNU Project.
	Qt is a GUI software toolkit made by Troll Tech and forms the basis of KDE. Qt is written in C++ and is fully object-oriented. It has everything you need to create professional GUI applications. Qt is a multi-platform toolkit that supports the X Window System (Unix/X11) or Microsoft Windows NT and Windows 95/98 with a simple recompile. Qt's ingenious signal-slot technology enables true component programming. A free version of Qt is available for Unix systems under the QPL.

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