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Cottontail - Multitasking, multithreading, 32-bit OS for x86 PCs. In development, coded in C and Assembly, flat mode architecture, virtual demand-mode paging, interprocess and interthread communication, blocking and non-blocking I/O and system events, internal timers.
DeviatorOS - Simple OS for x86 processors. First designed by Kenneth Garin who still directs and designs the project and allows help by others to develop it into a full working system. Goal: create a whole OS like DOS, with our own ideas of how an OS should work: not another clone. GNU GPL.
Domainatrix - Assembly language OS for Intel/AMD x86 architecture made specifically for serving the Web, written originally for the programmer's personal interest and education after moving to the PC platform from his old 8-bit machine. Philosophically similar to V2 OS.
KAOS: Mindkiller Systems, Inc. - Details on KAOS operating system project: kernel written in hand optimized 32-bit x86 assembly code, everything runs in 32-bit protected mode, no 16-bit BIOS callbacks or Virtual86 (V86) mode, several filesystems, more.
Made on a PC - Which is better a PC or Mac? Apple vs. Wintel? Get an image to display for your site for either side, and tell us why you think one is better than the other.
PM SZ OS - Protected mode, 32-bit OS for i486 CPUs and up, full network stack, supports several filesystems, paging, deferred procedure call support, virtual multiple screens with different resolution and scrollback, more. Free download. - Open source extensible PC virtualization software program to allow running multiple OSs at once on one system. Runs as much OS and application software natively as possible, the rest is emulated by the PC virtualization monitor.
ReWin - Rewriting Windows: new OS now being designed for computers with Intel (or compatible) i386, i.e., with multitasking functions built into the processor. Will be Windows compatible, but won't be a Windows clone: will give Windows executables the needed API so they can run correctly. English/Italiano.
SkyOS - Open-source, full featured graphical (GUI) 32-bit operating system for x86 386+ architecture; network and Sound Blaster support, mice, video, many file systems, more. Website shows requirements, screenshots, status, downloads, documentation, contacts, members, forum, mail list.
The Mobius - Open source OS for IA32 processors (i486 and up, and compatible), 32-bit graphical monolithic kernel, modular device drivers and GUI. Supports GCC (Cygwin), Visual C++, Unicode throughout; plans of various GNU tools are on the way.
The Mobius: SourceForge - A few screenshots, details, links.
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