List of BSD operating systems

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There are a number of Unix-like operating systems under active development, descended from the Berkeley Software Distribution (BSD) series of UNIX variants developed (originally by Bill Joy) at the University of California, Berkeley, Department of Electrical Engineering and Computer Science.

Since the early 2000s[update], there are four major BSD operating systems–FreeBSD, NetBSD, OpenBSD and DragonFly BSD, and an increasing number of other OSs forked from these, that add or remove certain features; however, most of them remain largely compatible with their originating OS—and so are not really forks of them. This is a list of those that have been active since 2014, and their websites.

## Contents

* 1 FreeBSD-based
* 1.1 Active
* 1.2 Discontinued
* 1.3 DragonFly BSD-based
* 2 NetBSD-based
* 3 OpenBSD-based
* 4 Legacy BSD-based
* 5 Historic BSD
* 6 BSD-like Systems
* 7 See also
* 8 References
* 9 External links

## FreeBSD-based

FreeBSD is a free Unix-like operating system descended from AT&T UNIX via the Berkeley Software Distribution (BSD). FreeBSD currently has more than 200 active developers and thousands of contributors. Other notable derivatives include DragonFly BSD, which was forked from FreeBSD 4.8, and Apple Inc.'s macOS, with its Darwin base including a large amount of code derived from FreeBSD.

### Active

Name | Description

|

ClonOS[1] | Offers a complete web UI for easily controlling, deploying and managing FreeBSD jails, containers and Bhyve/Xen hypervisor virtual environments
DragonFly BSD | Originally forked from FreeBSD 4.8, now developed in a different direction
TrueNAS | Previously known as FreeNAS
GhostBSD  | GhostBSD is a FreeBSD OS distro oriented for desktops and laptops. Its goal is to combine the stability and security of FreeBSD with OpenRC, OS packages and Mate graphical user interface. GhostBSD comes as livecd for users to test before installing.
HardenedBSD  | HardenedBSD is a security-enhanced fork of FreeBSD. The HardenedBSD Project is implementing many exploit mitigation and security technologies on top of FreeBSD.
helloSystem  | A desktop system for creators that focuses on simplicity, elegance, and usability
Junos OS | For Juniper routers
MidnightBSD  | Midnight BSD forked from FreeBSD 6.1 Beta.
XigmaNAS | Previously known as NAS4Free, is a network-attached storage (NAS) server software. It is a continuation of the original FreeNAS code.
NomadBSD | Persistent live system for USB flash drives
OPNsense | OPNsense is a FreeBSD-based firewall tailored for use as a firewall and router that was forked from pfSense.
pfSense | pfSense is a FreeBSD-based firewall tailored for use as a firewall and router.
CellOS  | The PlayStation 3 operating system
Orbis OS  | The PlayStation 4 operating system
Zrouter  | FreeBSD based firmware for embedded devices
ULBSD  | ULBSD is a Unix-like, desktop-oriented operating system based on FreeBSD. It aims to be easy to install and ready-to-use immediately by providing pre-installed graphical KDE5 user desktop environment.

### Discontinued

Name | Description

|

AskoziaPBX | Discontinued[2]
BSDBox  | Discontinued
BSDeviant  | Discontinued
BSDLive  | Discontinued
Bzerk CD  | Discontinued
ClosedBSD  | Discontinued
DesktopBSD | Discontinued.[2] Was a desktop-oriented FreeBSD variant using K Desktop Environment 3.5.
EclipseBSD  | Discontinued
Evoke  | Discontinued. Formerly DamnSmallBSD; a small live FreeBSD environment geared toward developers and system administrators.[3]
FenestrOS BSD  | Discontinued
FreeBSDLive  | Discontinued
FreeBSD LiveCD  | Discontinued
FreeSBIE  | Discontinued
Frenzy Live CD  | Discontinued. A "portable system administrator toolkit". It generally contains software for hardware tests, file system check, security check and network setup and analysis.
FuryBSD[4] | Discontinued in 2020. Paid homage to desktop BSD projects of the past like PC-BSD and TrueOS with its graphical interface and adds additional tools like a live, hybrid USB / DVD image.
Debian GNU/kFreeBSD  | Discontinued[5]
Ging | Discontinued
Gentoo/FreeBSD  | Discontinued. Gentoo/*BSD was a subproject to port Gentoo features such as Portage to the FreeBSD operating system.
GuLIC-BSD  | Discontinued
HamFreeSBIE  | Discontinued
HeX  | Discontinued
IronPort AsyncOS  | Discontinued. security appliances
miniBSD  | Discontinued
m0n0wall | Discontinued.[6] Successor is OPNsense. m0n0wall was an embedded firewall distribution of FreeBSD, one of the BSD operating system descendants. It provided a small image which can be put on Compact Flash cards as well as on CDROMs and hard disks. It ran on a number of embedded platforms and generic PCs.
NetBoz  | Discontinued
Nokia IPSO  | Discontinued. Nokia IP security appliances
PacBSD[7] | Discontinued. A lightweight operating system that aimed to bring the flexibility and philosophy of Arch Linux to BSD-based operating systems. The Project has been inactive since 2017.
Paxym  | Discontinued. FreeBSD for Cavium Networks OCTEON
PicoBSD | Discontinued
RelaxBSD  | Discontinued
RoFreeSBIE  | Discontinued
Snarl  | Discontinued
The Dark Star  | Discontinued
TheWall  | Discontinued
ThinBSD  | Discontinued
Triance OS  | Discontinued
TrueBSD  | Discontinued
TrueOS | Discontinued. TrueOS (formerly PC/BSD) was a Unix-like, desktop-oriented operating system based on FreeBSD based on ZFS boot-environments, Lumina (desktop environment), and the sysadm administration framework; reinvented as Trident OS on top of Void Linux, retained many BSD aesthetics.
TrustedBSD  | Discontinued. Many of its extensions were integrated into FreeBSD. Only activity on trustedbsd-discuss mailing list is spam (as of 2020-12-22).
WarBSD  | Discontinued
WiBSD  | Discontinued
WiFiBSD  | Discontinued
XORP | Discontinued
BSDTahoe | BSD 4.3 Tahoe for VAX
ravynOS (formerly airyxOS)  | ravynOS was a FreeBSD-based OS aimed at providing "the finesse of macOS", however it has moved to a Darwin base instead.

### DragonFly BSD-based

Name | Description

|

Gentoo/DragonFlyBSD  | Gentoo/*BSD subproject to port Gentoo features such as Portage to the DragonFly BSD operating system
FireFly BSD[8] | Was a DragonFly based distribution.

## NetBSD-based

NetBSD is a freely redistributable, open source version of the Unix-derivative Berkeley Software Distribution (BSD) computer operating system. It was the second open source BSD descendant to be formally released, after 386BSD, and continues to be actively developed. Noted for its portability and quality of design and implementation, it is often used in embedded systems and as a starting point for the porting of other operating systems to new computer architectures.

Name | Description

|

BlackBSD[9] | Discontinued. BlackBSD was a NetBSD-based Live CD, with security tools on it and fluxbox as a window manager
EdgeBSD[10] | Discontinued. NetBSD fork with main goal to be more modern in some aspects than NetBSD itself. Its most noticeable differences were back-committed to the main project.
fdgw[11][12] | fdgw is a tool kit to build a minimal NetBSD bootable disk, with a primary focus on routers.
Force10 Networks FTOS[13] | Powerful and robust operating system that runs on Force10 TeraScale E-Series switches/routers.
SEIL/SMFv2[14][15] | The software framework used by IIJ's SEIL/X CPE routers, built on NetBSD.
g4u[16] | NetBSD-based bootfloppy/CD-ROM that allows easy cloning of PC harddisks.
Debian GNU/NetBSD  | Debian GNU/NetBSD was a project to combine Debian with the kernel of NetBSD. It was abandoned in 2002 and has not seen active maintenance ever since.
Gentoo/NetBSD  | Discontinued. Gentoo/*BSD was a subproject to port Gentoo features such as Portage to the NetBSD operating system.
irBSD[17] | Discontinued. irBSD was a digital forensics kit based on the NetBSD operating system, designed for cryptography, penetration testing, data recovery, reverse engineering, privacy protection and other security tasks.
Jibbed[18] | Live CD based on NetBSD
NetBSD/i386 Firewall[19] | Inactive. A free firewall solution based on NetBSD and targeting i386 devices.
OS108[20] | OS108 is a desktop-oriented operating system based on NetBSD.
PolyBSD / pocketSAN[21] | Multipurpose framework for building embedded systems based on NetBSD.
SEOS[22] | The operating system for the Ericsson SmartEdge router series
smolBSD[23] | System creation tool based on NetBSD, primarily aimed at building modern, lightweight, fast micro VMs.

## OpenBSD-based

OpenBSD is a Unix-like computer operating system descended from Berkeley Software Distribution (BSD), a Unix derivative developed at the University of California, Berkeley. It was forked from NetBSD in 1995. OpenBSD includes a number of security features absent or optional in other operating systems and has a tradition of developers auditing the source code for software bugs and security problems.

Name | Description

|

ÆrieBSD  | OpenBSD fork which tends to be free from GPL-licensed software.[24]
adJ  | Distribution of OpenBSD for Spanish speakers,[25] since 2005 new versions are released around 3 months after OpenBSD's releases, source in GitHub,[26] to learn how to install there is a challenge with badge on P2PU[27]
Anonym.OS | Discontinued.
Bitrig[28] | Discontinued.[29] Was an OpenBSD fork with main goal to be more modern in some aspects than OpenBSD.
BowlFish  | Customized OpenBSD installation script for embedded systems, intended to make OpenBSD fit into small media like compact flash cards.
BSDanywhere  | Live CD featuring the Enlightenment DR17 window manager
ComixWall  | A firewall with UTM features. Discontinued 2009 in place for UTMFW[30]
ekkoBSD  | ekkoBSD was a Unix-like operating system based on OpenBSD 3.3, also incorporating code from other BSD-like operating systems. Its focus was on security and easy administration.
EmBSD  |
FabBSD  | OpenBSD fork with main application in CNC field. It is almost inactive.
FuguIta  | Providing both LiveDVD and LiveUSB for i386/amd64/arm64. Highly customizable by user. Tracking errata on OpenBSD-stable.
Gentoo/OpenBSD  | Gentoo/*BSD was a subproject to port Gentoo features such as Portage to the OpenBSD operating system.
MarBSD  | LiveCD of OpenBSD
LibertyBSD  | Discontinued. Fork of OpenBSD with all non-free binaries removed.
MicroBSD  | Fork of the UNIX-like BSD operating system descendant OpenBSD 3.0, begun in July 2002. The project's objective to produce a free and fully secure, complete system, but with a small footprint.
MirOS BSD | Core system based mostly on OpenBSD and some NetBSD code for 32-bit i386 and SPARC, updated via infrequent snapshots and by following "current". Additional packages via MirPorts and pkgsrc are no longer updated.
OliveBSD[31] | Was a live CD originally based on OpenBSD 3.8
PsygNAT  | Firewall and NAT router tool
Quetzal[32] | Was a live DVD/CD system, based on OpenBSD
SONaFR  | SONaFR is a small system with router/NAT/firewalling capabilities that fits on a single floppy.
UTMFW  | Successor of ComixWall, a firewall with UTM features
LiveUSB OpenBSD  | LiveUSB OpenBSD is a project started around 2009 for creating OpenBSD based bootable USB flash images. There are 3 variants, one with Gnome, a minimal text only version and an XFCE desktop image.
LiveCD OpenBSD  | LiveCD OpenBSD is sister project of LiveUSB-OpenBSD and this gives users a Live CD/DVD bootable distribution where the user gets to experience OpenBSD without installing to disk. There are 3 flavors, one with XFCE, one with MATE desktop and one with KDE.

## Legacy BSD-based

Name  | Description

|

RetroBSD | RetroBSD is a port of 2.11BSD Unix intended for embedded systems with fixed memory mapping. The current target is the Microchip PIC32M microcontroller with 128 kbytes of RAM and 512 kbytes of Flash.
DiscoBSD | DiscoBSD is an independent continuation of RetroBSD that also supports STM32F4 ARM devices.
LiteBSD | LiteBSD is a port of 4.4BSD Unix adapted for embedded systems with memory mapping with paging support. The current target is the Microchip PIC32MZ microcontroller.

## Historic BSD

BSD was originally derived from Unix, using the complete source code for Sixth Edition Unix for the PDP-11 from Bell Labs as a starting point for the First Berkeley Software Distribution, or 1BSD. A series of updated versions for the PDP-11 followed (the 2.xBSD releases). A 32-bit version for the VAX platform was released as 3BSD, and the 4.xBSD series added many new features, including TCP/IP networking.

For many years, the primary developer and project leader was Bill Joy, who was a graduate student at the time; funding for this project was provided by DARPA. DARPA was interested in obtaining a programming platform and programmer's interface which would provide a robust, general purpose, time-sharing computing platform which would not become obsolete every time computing hardware was or is replaced. Such an operating system would allow US Department of Defense software, especially for intricate, long-term finance and logistics operations, to be quickly ported to new hardware as it became available.

As time went on, code was later ported both from and to Unix System III and still later Unix System V. Unix System V Revision 4 (SVR4), released circa 1992, contained much code which was ported from BSD version up to and including 4.3BSD.

## BSD-like Systems

There are various operating systems, particularly GNU/Linux distributions that attempt to imitate the design of BSD, but do not use the code base of any BSD Operating System.

Name | Description

|

Void Linux | Void Linux is a Linux distribution created in 2008 by Juan Romero Pardines, a former developer of NetBSD. It uses its own independent package manager, XBPS. It also has elements inspired by NetBSD, such as xbps-src—a source package management system inspired by pkgsrc, an adaption of NetBSD's wtf utility, and also uses runit as its init system instead of systemd.
CRUX | CRUX is a Linux distribution mainly targeted at expert computer users. It uses BSD-style initscripts and utilizes a ports system similar to a BSD-based operating system.
Chimera Linux | Chimera Linux is a Linux distribution that uses musl libc and core utilities based on FreeBSD.
Sabotage Linux[33] | Sabotage is an experimental Linux distribution based on musl libc and busybox. It uses NetBSD curses and has a lightweight multithreaded package and build manager, named butch.

## See also

* Comparison of BSD operating systems
* Commercial products based on FreeBSD

## References

1. ↑ "Free Open-Source Hosting Platform ClonOS". https://clonos.tekroutine.com/.
2. ↑ 2.0 2.1 "Updated: FBSD based Projects and Systems page". FreeBSD News. 2010-01-12. http://www.freebsdnews.net/2010/01/12/updated-fbsd-based-projects-and-systems-pag/.
3. ↑ "evoke - Formerly DamnSmallBSD - Google Project Hosting". https://code.google.com/p/evoke/.
4. ↑ "A Powerful, Portable, FreeBSD Desktop". https://www.furybsd.org/.
5. ↑ Wiltshire, Jonathan (2014-11-09). "Release Team Sprint Results". debian-devel-announce (Mailing list).
6. ↑ m0w0wall discontinued 2014
7. ↑ "PacBSD : Homepage : A simple, lightweight distribution". Archbsd.net. https://www.pacbsd.org/.
8. ↑ "FireflyBSD - DragonFlyBSD". http://www.fireflybsd.com/.
9. ↑ "BlackBSD Github repository". 18 May 2013. https://github.com/betounix/BlackBSD.
10. ↑ "The EdgeBSD Project: About EdgeBSD". Edgebsd.org. http://www.edgebsd.org/.
11. ↑ "fdgw is one floppy NetBSD.". Ken'ichi Fukamachi - FML.ORG. https://www.fml.org/software/fdgw/.
12. ↑ "fdgw Github repository". 6 June 2017. https://github.com/user340/fdgw2.
13. ↑ "Dell Force10 Operating System". NetSolutionsWorks. https://www.netsolutionworks.com/Force10/OS/Force10-FTOS.asp.
14. ↑ "SMF developer site". https://dev.smf.jp/.
15. ↑ "SEIL/SMF Github page". https://github.com/seil-smf.
16. ↑ "g4u - Harddisk Image Cloning for PCs". https://www.feyrer.de/g4u/.
17. ↑ "irBSD". PCLITE Official. https://irbsd.net/.
18. ↑ "Jibbed: A live USB stick for NetBSD". https://www.jibbed.org/.
19. ↑ "Welcome to the NetBSD/i386 Firewall Project". http://firewall.dubbele.com/index.html.
20. ↑ "A fast, open and Secure desktop Operating System based on NetBSD". 2020-11-13. https://os108.org/.
21. ↑ "NetBSD on embedded devices - turning USB thumb-drives into VPNs.". https://www.tdisecurity.com/labs/polybsd-pocketsan-pocketvpn/.
22. ↑ "RedBack Smartedge pcap format". Wireshark Wiki. https://wiki.wireshark.org/RedBack.
23. ↑ "smolBSD: make your own BSD UNIX MicroVM". https://smolbsd.org/.
24. ↑ "AerieBSD". http://aeriebsd.org/about.html.
25. ↑ "Novedades". Aprendiendo.pasosdejesus.org. http://aprendiendo.pasosdejesus.org/.
26. ↑ "pasosdeJesus/adJ · GitHub". Github.com. https://github.com/pasosdeJesus/adJ.
27. ↑ "Reto: adJ como sistema operativo de escritorio" (in es). P2PU. https://p2pu.org/es/groups/openbsd-adj-como-sistema-de-escritorio/.
28. ↑ "Bitrig". Bitrig.org. https://www.bitrig.org.
29. ↑ "Faq 路 bitrig/bitrig Wiki 路 GitHub". Github.com. 2013-10-04. https://github.com/bitrig/bitrig/wiki/Faq.
30. ↑ "ComixWall". https://sites.google.com/site/comixwall.
31. ↑ DistroWatch. "DistroWatch.com: OliveBSD". Distrowatch.com. http://distrowatch.com/table.php?distribution=olivebsd.
32. ↑ Micho Durdevich. "Quetzal::BSD Home Page". http://quetzal.matem.unam.mx/.
33. ↑ "Sabotage Linux". https://sabotage-linux.github.io/.

## External links

* helloSystem docs on GitHub

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Berkeley Software Distribution

People|

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Derivatives|

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Discontinued|

* 386BSD
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* Ultrix

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