Comal-Linux is a Linux distribution derived from Slackware Linux. It is packaged as a live CD, and is intended for desktop users who want to use Slackware Linux without first installing it on their computers. Comal-Linux is built from "pure" Slackware Linux, making it as compatible with the original as possible, including application packages. By choosing lightweight desktop and application software, the distribution can be used on older computers. Comal-Linux is an unofficial Muslim edition of Slackware.
Controlix is a control theory based operating system. It abstracts the complete abstraction hierarchy of computer systems principles, from basic signal-on-wire all the way up to abstract libraries and interface linkage. It is written in the VHDL language and is designed to be modular, synchronous, and retargetable.
Cross Linux From Scratch (CLFS) is a project that provides you with step-by-step instructions for building your own customized Linux system entirely from source. This is a multi-architecture version of Linux From Scratch that is cross-compiled. It currently supports Alpha, MIPS, PowerPC, Sparc, x86, and x86_64.
DragonFly belongs to the same class of operating systems as other BSD-derived systems and Linux. It is based on the same Unix ideals and APIs and shares ancestor code with other BSD operating systems. DragonFly is differentiated from other operating systems in its class by, among others, the HAMMER file system, Virtual Kernels, swapcache, and the pervasive use of soft token locks. DragonFly provides an opportunity for the BSD base to grow in an entirely different direction from the ones taken in the FreeBSD, NetBSD, and OpenBSD series.
GNU Mach is the microkernel upon which a GNU Hurd system is based. It provides an Inter Process Communication (IPC) mechanism which the Hurd uses to define interfaces for implementing in a distributed multi-server fashion the services a traditional operating system kernel provides. Mach is particularly well-suited for SMP and network cluster techniques. Thread support is provided at the kernel level, and the kernel itself takes advantage of that. Network transparency at the IPC level makes resources of the system available across machine boundaries.
HotSpotEngine is a Web based software for the HotSpot Billing System and all-in-one hotspot management solutions. It supports wireless or wired networking. It is designed to run on a dedicated PC, and it is available as an installable CD image (ISO). It comes with a Linux-based OS and all required software included. Its main features include the ability to create randomly generated vouchers, prepaid user accounts with time limits or data limits, the ability to refill vouchers, and user sign-up via PayPal integration.