Web site: 386bsd.org
- Origin: USA
- Category: Server
- Desktop environment: CLI
- Architecture: x86
- Based on: UNIX
- Wikipedia: 386BSD
- Media: Install
- The last version | Released: 2.0 | August 2016
386BSD – a derived from 4.3BSD, the first open source Berkeley UNIX operating system. It was the progenitor of Linux, iOS, and Android. Beginning with “A Modest Proposal” in 1989, 386BSD broke from proprietary systems by having publicly accessible code and documentation.
386BSD Release 0.0 was distributed in 1993 in tandem to the popular “Porting Unix to the 386” article series published in Dr. Dobb’s Journal.
Release 0.1 quickly followed, enhanced with contributions throughout the globe.
386BSD Release 1.0, aka Jolix, was a break from earlier Berkeley UNIX systems through use of a modular architecture. 386BSD Release 2.0 built upon the modular framework to create self-healing components. Each release introduced novel mechanisms from role-based security to polymorphic protocols.
386BSD.org provides the opportunity to interact with the original source, articles and supporting materials, and a live demo of 386BSD Release 2.0.
386BSD is a mother of free BSD systems today, such as: BSD/386, NetBSD, FreeBSD, BSD/OS, Darwin, OpenBSD and others.
The project authors are Lynne and William Jolitz.
386BSD source code
Web site: (not active)
Desktop environment: text
Architecture: x86, PC/XT, PDP-11, Z8001, 68k
Based on: UNIX
The last version | Released: 184.108.40.206 | 1992
Xenix/SCO UNIX System V – a source closed, UNIX family operating system published in 1980 by Microsoft, then later sold to Santa Cruz Operation (SCO).
Microsoft(R) XENIX(R) System V/386 was the first release of Microsoft’s implementation of the UNIX(R) System V Operating System for the Intel(R) 80386 microprocessor.
XENIX is a multi-user solution that allows multiple users to be attached via inexpensive terminals to a single machine, thereby allowing the users to share the resources of the machine. It is also compatible with the UNIX System V Operating System – an operating system that is highly portable, and is to be found on a wide variety of architectures: large mainframes, minicomputers, technical and scientific workstations, and personal computers.
Starting in 1981, Microsoft has marketed its adaptation of the UNIX Operating System under the name XENIX. Microsoft’s goal was to provide high quality implementations of UNIX for computer systems based upon microprocessors. In doing so, Microsoft has become one of the major licensees of the UNIX Operating System, accounting for the majority of implementations sold upon microprocessor-based systems. In particular, a large application base has been built around Microsoft XENIX System V/286 for systems based upon the Intel 80286 microprocessor. Microsoft XENIX System V/386 for the Intel 80386 will preserve this application base, while opening up the full potential of the 80386 to developers and users.
Supported platforms were: PC/XT, x86, PDP-11, Z8001, 68k.
Web site: www.nesssoftware.com/home/mwc/source.php
Desktop environment: CLI
Based on: UNIX-like
The last version | Released: 4.2.10 | May 1994
Coherent – a clone of the UNIX operating system for Intel 286/386/486 based systems.
In 1992 COHERENT 4.0 for the 386/486 was released, and the whole system looked pretty much like the UNIX System V.3 boxes. This is meant API wise, UNIX System V.3 has many more features than COHERENT, but it is possible to get most software written for UNIX working on COHERENT. Also the system is iBCS2 compatible, so it runs the same shrinkwrap applications like the other 386 UNIX systems from SCO, Interactive and so on. The old HDB uucp was replaced with Taylor uucp from Ian Lance Taylor, which you’ll still find on almost any modern UNIX systems nowadays.
In 1994 Mark Williams released COHERENT 4.2, with STREAMS, POSIX.1 and POSIX.2 compatibility and other features, that made the system pretty much look like UNIX System V.4. Again, meant API wise, UNIX System V.4 has many more features than COHERENT.
In January 2015, Robert “Bob” Swartz (founder and president of MWC) agreed to open posting of COHERENT command and system sources under this Open Source license.
The operating system was a proprietary product, but it became open source in 2015, released under a 3-clause BSD License.
Developer of the project is Mark Williams Company (MWC), the company was closed in 1995.
Copyright © 1977-1995 by Robert Swartz. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
This software is provided by the copyright holders and contributors “as is” and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the copyright holder or contributors be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.
Coherent source 159MB.tgz