Intel x86

SkyOS is an operating system written from scratch for x86 PC's. As required for a modern operating system, it supports features like multiprocessor support (SMP), virtual memory, memory protection, multitasking, and threading.

Plex86 has been revitalized/rehashed to offer a very light (VM) Virtual Machine for running Linux / x86. Rather than implement a heavyweight VM which can run all guest (OSes) Operating Systems, the new approach is to run only Linux VMs, making the new plex86 architecture on the order of 100x more simplistic

It includes a simple bootstrap loader for the x86, and a very simple kernel. The system boots and presents a shell-like prompt. The shell prompts for a valid integer input, which is used by the kernel as the number of disks for solving the puzzle. The list of moves is thereafter printed.

RDOS source code is distributed as GPL, except for commercial usage in embedded systems.

Protected mode, 32-bit OS for i486 CPUs and up, full network stack, supports several filesystems, paging, deferred procedure call support, and virtual multiple screens with different resolution and scrollback. Free download.

Visopsys is an alternative operating system for PC compatible computers. Under development since late 1997, this system is small, fast, and open source. It features a simple but functional graphical interface, real preemptive multitasking, and virtual memory. Though it attempts to be compatible in a number of ways, Visopsys is not a clone of any other operating system. You can demo the distribution from a "live" CD or floppy disk.

PizziOS is a small 386+ OS designed principally for speed. It is written in 100% assembly, although software and possibly some drivers may be written in C, if that proves feasible. PizziOS runs off a segmented memory model. It will not be a UNIX as UNIX has proven to be as much of a bandwagon as Windows. At present I do not plan to support multiple users.