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Welcome
to the NEW UGN (Undergrounds Network), formerly known as Undergrounds.com!
Browse
our ever growing web directory or any of the other entertainment sites, absolutely
free. Please note that some content has been sourced from the ODP.
BoxOS
Connects many open source projects together in one neat package; kernel, boot loader, graphical user interface, console user interface, applications, programming languages, drivers, file system support for BeOS, Linux, Windows 95/98/NT. [Open Source, GNU |
Download Operating System: LSD
By LadSoft; developed years ago and improved since then; planed for redesign to make a viable OS; updates soon. Extant version is good sample of programming standard PC hardware (no PCI) and managing x86 pmode resources. [Copyrighted Freeware] |
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. |
NOWSMART 386-OS: NWSOS
32-bit multitasking OS, for 386+ PC/AT compatibles, supports FAT12/FAT16/FAT32, GUI, CUI in console window; under active development. By NOWSMARTSOFT LightCone. English, Nihongo. |
PizziOS
One-user, segmented memory OS, written in pure x86 Assembly but may get some C, memory protection via segmentation, FAT-16/32. Main goals: small, fast. Will not be a Unix, but will use block shifting memory management scheme used in some old Unix. Downlo |
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. |
RavenOS
Still being defined, to run on x86, download available. |
RDOS
Multi-process/threaded protected mode OS for all i386+ systems, written in all 16-/32-bit Assembly in TASM, fully PROMable so can port to embedded systems with no keyboard and/or screen, stable and secure via segment protection and paging. [Open Source, |
ShellOS
Development of a 32-bit, monolithic kernal with preemptive, prioritized multitasking. |
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, me |
SuperDOS
Multitasking, multiuser business OS; small (100K), integrated file system, low maintenance. Main purpose: fast business online transaction processing. Usually used in vertical markets such as transportation. Not a (unrelated to) DOS variant. By Bluebird |
TABOS
Merger of TAB-DOS Alphasystem rewrite of PTS-DOS source code, and AladinOS; and a distant relative of FloppyOS and MenuetOS. Goal: tiny, fast, written in pure x86 Assembly. [Open Source] |
The Mobius
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 for many GNU tools are underway. [Open Source] |
The Mobius: SourceForge
A few screenshots, details, links. |
TriangleOS
32-bit multitasking, multithreaded OS for x86 386+ CPUs, with GUI, FSs, applications, drivers, all in active development. Site has information, news, documents, screenshots, downloadable releases. |
Visopsys
VISual OPerating SYStem: small, fast, home-brewed, open source, 32-bit, true preemptive multitasking OS kernel for x86, runs in 32-bit mode, virtual memory. Also links, and free code bits for developers, on various pages. [Open Source, GPL] |
XAOS
Runs on i386+, 16-bit real mode, FAT12/16/32 (read-only, LFN support), coded in C++; downloads: binaries, source, utilities, game (tetris source); downloads. [Open Source] |
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