<s>
There	O
are	O
a	O
number	O
of	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
based	O
on	O
or	O
descended	O
from	O
the	O
Berkeley	B-Operating_System
Software	I-Operating_System
Distribution	I-Operating_System
(	O
BSD	B-Operating_System
)	O
series	O
of	O
Unix	B-Application
variant	O
options	O
.	O
</s>
<s>
The	O
three	O
most	O
notable	O
descendants	O
in	O
current	O
use	O
are	O
FreeBSD	B-Operating_System
,	O
OpenBSD	B-Operating_System
,	O
and	O
NetBSD	B-Device
,	O
which	O
are	O
all	O
derived	O
from	O
386BSD	B-Operating_System
and	O
4.4BSD-Lite	O
,	O
by	O
various	O
routes	O
.	O
</s>
<s>
Both	O
NetBSD	B-Device
and	O
FreeBSD	B-Operating_System
started	O
life	O
in	O
1993	O
,	O
initially	O
derived	O
from	O
386BSD	B-Operating_System
,	O
but	O
in	O
1994	O
migrating	O
to	O
a	O
4.4BSD-Lite	O
code	B-General_Concept
base	I-General_Concept
.	O
</s>
<s>
OpenBSD	B-Operating_System
was	O
forked	B-Application
from	O
NetBSD	B-Device
in	O
1995	O
.	O
</s>
<s>
Other	O
notable	O
derivatives	O
include	O
DragonFly	B-Application
BSD	I-Application
,	O
which	O
was	O
forked	B-Application
from	O
FreeBSD	B-Operating_System
4.8	O
,	O
and	O
Apple	O
Inc.	O
'	O
s	O
iOS	B-Application
and	O
macOS	B-Application
,	O
with	O
its	O
Darwin	B-Operating_System
base	O
including	O
a	O
large	O
amount	O
of	O
code	O
derived	O
from	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
Most	O
of	O
the	O
current	O
BSD	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
are	O
open	B-Application
source	I-Application
and	O
available	O
for	O
download	O
,	O
free	O
of	O
charge	O
,	O
under	O
the	O
BSD	B-Operating_System
License	I-Operating_System
,	O
the	O
most	O
notable	O
exceptions	O
being	O
macOS	B-Application
and	O
iOS	B-Application
.	O
</s>
<s>
They	O
also	O
generally	O
use	O
a	O
monolithic	B-Operating_System
kernel	I-Operating_System
architecture	O
,	O
apart	O
from	O
macOS	B-Application
,	O
iOS	B-Application
,	O
and	O
DragonFly	B-Application
BSD	I-Application
which	O
feature	O
hybrid	B-Operating_System
kernels	I-Operating_System
.	O
</s>
<s>
The	O
various	O
open	B-Application
source	I-Application
BSD	B-Operating_System
projects	O
generally	O
develop	O
the	O
kernel	O
and	O
userland	B-Operating_System
programs	O
and	O
libraries	O
together	O
,	O
the	O
source	O
code	O
being	O
managed	O
using	O
a	O
single	O
central	O
source	O
repository	O
.	O
</s>
<s>
In	O
the	O
past	O
,	O
BSD	B-Operating_System
was	O
also	O
used	O
as	O
a	O
basis	O
for	O
several	O
proprietary	B-Application
versions	O
of	O
UNIX	B-Application
,	O
such	O
as	O
Sun	O
's	O
SunOS	B-Operating_System
,	O
Sequent	O
's	O
Dynix	B-Library
,	O
NeXT	O
's	O
NeXTSTEP	B-Application
,	O
DEC	O
's	O
Ultrix	B-Operating_System
and	O
OSF/1	B-Operating_System
AXP	I-Operating_System
(	O
which	O
became	O
the	O
now	O
discontinued	O
Tru64	B-Operating_System
UNIX	I-Operating_System
)	O
.	O
</s>
<s>
Parts	O
of	O
NeXT	O
's	O
software	O
became	O
the	O
foundation	O
for	O
macOS	B-Application
which	O
,	O
together	O
with	O
iOS	B-Application
,	O
is	O
among	O
the	O
most	O
commercially	O
successful	O
BSD	B-Operating_System
variants	O
in	O
the	O
general	O
market	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
aims	O
to	O
make	O
an	O
operating	B-General_Concept
system	I-General_Concept
usable	O
for	O
any	O
purpose	O
.	O
</s>
<s>
It	O
is	O
intended	O
to	O
run	O
a	O
wide	O
variety	O
of	O
applications	O
,	O
be	O
easy	O
to	O
use	O
,	O
contain	O
cutting	O
edge	O
features	O
,	O
and	O
be	O
highly	O
scalable	B-Architecture
on	O
very	O
high	O
load	O
network	B-Application
servers	I-Application
.	O
</s>
<s>
FreeBSD	B-Operating_System
is	O
free	B-Application
software	I-Application
,	O
and	O
the	O
project	O
prefers	O
the	O
FreeBSD	B-Operating_System
license	B-License
.	O
</s>
<s>
However	O
,	O
they	O
sometimes	O
accept	O
non-disclosure	O
agreements	O
(	O
NDAs	O
)	O
and	O
include	O
a	O
limited	O
number	O
of	O
nonfree	B-Application
hardware	B-Operating_System
abstraction	I-Operating_System
layer	I-Operating_System
(	O
HAL	O
)	O
modules	O
for	O
specific	O
device	O
drivers	O
in	O
their	O
source	O
tree	O
,	O
to	O
support	O
the	O
hardware	O
of	O
companies	O
who	O
do	O
not	O
provide	O
purely	O
libre	O
drivers	O
(	O
such	O
as	O
HALs	O
to	O
program	O
software-defined	B-Architecture
radios	I-Architecture
so	O
that	O
vendors	O
do	O
not	O
share	O
their	O
nonfree	B-Application
algorithms	O
)	O
.	O
</s>
<s>
To	O
maintain	O
a	O
high	O
level	O
of	O
quality	O
and	O
provide	O
good	O
support	O
for	O
"	O
production	O
quality	O
commercial	O
off-the-shelf	O
(	O
COTS	O
)	O
workstation	B-Device
,	O
server	B-Application
,	O
and	O
high-end	O
embedded	B-Architecture
systems	I-Architecture
"	O
,	O
FreeBSD	B-Operating_System
focuses	O
on	O
a	O
narrow	O
set	O
of	O
architectures	O
.	O
</s>
<s>
A	O
significant	O
focus	O
of	O
development	O
since	O
2000	O
has	O
been	O
fine-grained	O
locking	O
and	O
SMP	B-Operating_System
scalability	B-Architecture
.	O
</s>
<s>
From	O
2007	O
on	O
,	O
most	O
of	O
the	O
kernel	O
was	O
fine-locked	O
and	O
scaling	B-Architecture
improvements	O
started	O
to	O
be	O
seen	O
.	O
</s>
<s>
TrueNAS/FreeNAS	B-Application
–	O
a	O
network-attached	B-Application
storage	I-Application
(	O
NAS	B-Application
)	O
operating	B-General_Concept
system	I-General_Concept
based	O
on	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
FuryBSD	O
–	O
a	O
FreeBSD-based	O
operating	B-General_Concept
system	I-General_Concept
,	O
founded	O
after	O
Project	O
Trident	O
decided	O
to	O
build	O
on	O
Void	O
Linux	B-Application
instead	O
of	O
TrueOS	B-Application
.	O
</s>
<s>
GhostBSD	B-Application
–	O
a	O
FreeBSD-based	O
operating	B-General_Concept
system	I-General_Concept
with	O
OpenRC	O
and	O
OS	O
packages	O
.	O
</s>
<s>
Junos	B-Application
OS	I-Application
–	O
a	O
FreeBSD-based	O
nonfree	B-Application
operating	B-General_Concept
system	I-General_Concept
distributed	O
with	O
Juniper	O
Networks	O
hardware	O
.	O
</s>
<s>
NomadBSD	O
–	O
a	O
persistent	O
live	O
system	O
for	O
USB	O
flash	O
drives	O
,	O
based	O
on	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
ClonOS	O
–	O
virtual	O
hosting	O
platform/appliance	O
based	O
on	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
pfSense	B-Protocol
–	O
an	O
open	B-Application
source	I-Application
firewall/router	O
computer	O
software	O
distribution	O
based	O
on	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
OPNsense	B-Protocol
–	O
an	O
open	B-Application
source	I-Application
firewall/router	O
computer	O
software	O
distribution	O
based	O
on	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
BSDRP	O
–	O
BSD	B-Operating_System
Router	O
Project	O
:	O
Open	B-Application
Source	I-Application
Router	O
Distribution	O
based	O
on	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
HardenedBSD	O
–	O
HardenedBSD	O
is	O
a	O
security-enhanced	O
fork	B-Application
of	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
StarBSD	O
–	O
is	O
a	O
Unix-like	B-Operating_System
,	O
server-oriented	O
operating	B-General_Concept
system	I-General_Concept
based	O
on	O
FreeBSD	B-Operating_System
for	O
Mission-Critical	O
Enterprise	O
Environment	O
.	O
</s>
<s>
TrueOS	B-Application
(	O
previously	O
PC-BSD	B-Application
)	O
–	O
was	O
a	O
FreeBSD	B-Operating_System
based	O
server	B-Application
operating	B-General_Concept
system	I-General_Concept
,	O
previously	O
a	O
desktop	B-General_Concept
operating	I-General_Concept
system	I-General_Concept
.	O
</s>
<s>
XigmaNAS	B-Application
–	O
a	O
network-attached	B-Application
storage	I-Application
(	O
NAS	B-Application
)	O
server	B-Application
software	I-Application
with	O
a	O
dedicated	O
management	O
web	O
interface	O
.	O
</s>
<s>
helloSystem	O
-	O
a	O
GUI-focused	O
system	O
with	O
a	O
macOS	B-Application
interface	O
.	O
</s>
<s>
CheriBSD	O
–	O
adapted	O
to	O
support	O
CHERI-MIPS	O
,	O
CHERI-RISC-V	O
,	O
and	O
Arm	O
Morello	O
ISAs	O
.	O
</s>
<s>
NetBSD	B-Device
aims	O
to	O
provide	O
a	O
freely	O
redistributable	O
operating	B-General_Concept
system	I-General_Concept
that	O
professionals	O
,	O
hobbyists	O
,	O
and	O
researchers	O
can	O
use	O
in	O
any	O
manner	O
they	O
wish	O
.	O
</s>
<s>
The	O
main	O
focus	O
is	O
portability	B-Architecture
,	O
through	O
the	O
use	O
of	O
clear	O
distinctions	O
between	O
machine-dependent	O
and	O
machine-independent	O
code	O
.	O
</s>
<s>
It	O
runs	O
on	O
a	O
wide	O
variety	O
of	O
32-bit	O
and	O
64-bit	O
processor	O
architectures	O
and	O
hardware	O
platforms	O
,	O
and	O
is	O
intended	O
to	O
interoperate	O
well	O
with	O
other	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
NetBSD	B-Device
places	O
emphasis	O
on	O
correct	O
design	O
,	O
well-written	O
code	O
,	O
stability	O
,	O
and	O
efficiency	O
,	O
where	O
practical	O
,	O
close	O
compliance	O
with	O
open	O
API	O
and	O
protocol	O
standards	O
is	O
also	O
aimed	O
for	O
.	O
</s>
<s>
In	O
June	O
2008	O
,	O
the	O
NetBSD	B-Device
Foundation	O
moved	O
to	O
a	O
two-clause	O
BSD	B-Operating_System
license	I-Operating_System
,	O
citing	O
changes	O
at	O
UCB	O
and	O
industry	O
applicability	O
.	O
</s>
<s>
NPF	B-Protocol
is	O
a	O
project	O
spawned	O
by	O
NetBSD	B-Device
.	O
</s>
<s>
OS108	O
–	O
system	O
with	O
graphical	O
desktop	O
environment	O
based	O
on	O
NetBSD	B-Device
.	O
</s>
<s>
OpenBSD	B-Operating_System
is	O
a	O
security-focused	O
BSD	B-Operating_System
known	O
for	O
its	O
developers	O
 '	O
insistence	O
on	O
extensive	O
,	O
ongoing	O
code	O
auditing	O
for	O
security	O
and	O
correct	O
functionality	O
,	O
a	O
"	O
secure	O
by	O
default	O
"	O
philosophy	O
,	O
good	O
documentation	O
,	O
and	O
adherence	O
to	O
strictly	O
open	B-Application
source	I-Application
licensing	O
.	O
</s>
<s>
The	O
system	O
incorporates	O
numerous	B-Application
security	I-Application
features	I-Application
that	O
are	O
absent	O
or	O
optional	O
in	O
other	O
versions	O
of	O
BSD	B-Operating_System
.	O
</s>
<s>
The	O
OpenBSD	B-Operating_System
policy	O
on	O
openness	O
extends	O
to	O
hardware	O
documentation	O
and	O
drivers	O
,	O
since	O
without	O
these	O
,	O
there	O
can	O
be	O
no	O
trust	O
in	O
the	O
correct	O
operation	O
of	O
the	O
kernel	O
and	O
its	O
security	O
,	O
and	O
vendor	O
software	B-Error_Name
bugs	I-Error_Name
would	O
be	O
hard	O
to	O
resolve	O
.	O
</s>
<s>
OpenBSD	B-Operating_System
emphasizes	O
very	O
high	O
standards	O
in	O
all	O
areas	O
.	O
</s>
<s>
Security	O
policies	O
include	O
disabling	O
all	O
non-essential	O
services	O
and	O
having	O
sane	O
initial	O
settings	O
;	O
and	O
integrated	O
cryptography	O
(	O
originally	O
made	O
easier	O
due	O
to	O
relaxed	O
Canadian	O
export	O
laws	O
relative	O
to	O
the	O
United	O
States	O
)	O
,	O
full	O
public	O
disclosure	O
of	O
all	O
security	O
flaws	O
discovered	O
;	O
thoroughly	O
auditing	O
code	O
for	O
bugs	B-Error_Name
and	O
security	O
issues	O
;	O
various	O
security	O
features	O
,	O
including	O
the	O
W^X	O
page	O
protection	O
technology	O
and	O
heavy	O
use	O
of	O
randomization	O
to	O
mitigate	O
attacks	O
.	O
</s>
<s>
Coding	O
approaches	O
include	O
an	O
emphasis	O
on	O
searching	O
for	O
similar	O
issues	O
throughout	O
the	O
code	B-General_Concept
base	I-General_Concept
if	O
any	O
code	O
issue	O
is	O
identified	O
.	O
</s>
<s>
Concerning	O
software	O
freedom	O
,	O
OpenBSD	B-Operating_System
prefers	O
the	O
BSD	B-Operating_System
or	O
ISC	B-License
license	I-License
,	O
with	O
the	O
GPL	B-License
acceptable	O
only	O
for	O
existing	O
software	O
which	O
is	O
impractical	O
to	O
replace	O
,	O
such	O
as	O
the	O
GNU	B-Application
Compiler	I-Application
Collection	I-Application
.	O
</s>
<s>
In	O
common	O
with	O
its	O
parent	O
,	O
NetBSD	B-Device
,	O
OpenBSD	B-Operating_System
strives	O
to	O
run	O
on	O
a	O
wide	O
variety	O
of	O
hardware	O
.	O
</s>
<s>
Where	O
licenses	O
conflict	O
with	O
OpenBSD	B-Operating_System
's	O
philosophy	O
,	O
the	O
OpenBSD	B-Operating_System
team	O
has	O
re-implemented	O
major	O
pieces	O
of	O
software	O
from	O
scratch	O
,	O
which	O
have	O
often	O
become	O
the	O
standard	O
used	O
within	O
other	O
versions	O
of	O
BSD	B-Operating_System
.	O
</s>
<s>
Examples	O
include	O
the	O
pf	B-Protocol
packet	B-Protocol
filter	I-Protocol
,	O
new	O
privilege	O
separation	O
techniques	O
used	O
to	O
safeguard	O
tools	O
such	O
as	O
tcpdump	B-Protocol
and	O
tmux	B-Language
,	O
much	O
of	O
the	O
OpenSSH	B-Language
codebase	B-General_Concept
,	O
and	O
replacing	O
GPL	B-License
licensed	O
tools	O
such	O
as	O
diff	B-Application
,	O
grep	B-Application
and	O
pkg-config	B-Application
with	O
ISC	B-License
or	O
BSD	B-Operating_System
licensed	O
equivalents	O
.	O
</s>
<s>
OpenBSD	B-Operating_System
prominently	O
notes	O
the	O
success	O
of	O
its	O
security	O
approach	O
on	O
its	O
website	O
home	O
page	O
.	O
</s>
<s>
,	O
only	O
two	O
vulnerabilities	O
have	O
ever	O
been	O
found	O
in	O
its	O
default	O
install	O
(	O
an	O
OpenSSH	B-Language
vulnerability	O
found	O
in	O
2002	O
,	O
and	O
a	O
remote	O
network	O
vulnerability	O
found	O
in	O
2007	O
)	O
in	O
a	O
period	O
of	O
almost	O
22	O
years	O
.	O
</s>
<s>
According	O
to	O
OpenBSD	B-Operating_System
expert	O
Michael	O
W	O
.	O
Lucas	O
,	O
OpenBSD	B-Operating_System
"	O
is	O
widely	O
regarded	O
as	O
the	O
most	O
secure	O
operating	B-General_Concept
system	I-General_Concept
available	O
anywhere	O
,	O
under	O
any	O
licensing	O
terms.	O
"	O
</s>
<s>
OpenBSD	B-Operating_System
has	O
spawned	O
numerous	O
child	O
projects	O
such	O
as	O
OpenSSH	B-Language
,	O
OpenNTPD	B-Application
,	O
OpenBGPD	B-Application
,	O
OpenSMTPD	B-Application
,	O
PF	B-Protocol
,	O
CARP	B-Application
,	O
and	O
LibreSSL	B-Language
.	O
</s>
<s>
LibertyBSD	O
–	O
Aimed	O
to	O
be	O
a	O
'	O
deblobbed	O
 '	O
version	O
of	O
OpenBSD	B-Operating_System
.	O
</s>
<s>
LibertyBSD	O
began	O
going	O
through	O
the	O
process	O
to	O
become	O
Free	B-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
FSDG	O
certified	O
,	O
but	O
ultimately	O
never	O
was	O
accepted	O
.	O
</s>
<s>
DragonFly	B-Application
BSD	I-Application
aims	O
to	O
be	O
inherently	O
easy	O
to	O
understand	O
and	O
develop	O
for	O
multi-processor	B-Operating_System
infrastructures	O
.	O
</s>
<s>
The	O
main	O
goal	O
of	O
the	O
project	O
,	O
forked	B-Application
from	O
FreeBSD	B-Operating_System
4.8	O
,	O
is	O
to	O
radically	O
change	O
the	O
kernel	O
architecture	O
,	O
introducing	O
microkernel-like	O
message	B-Architecture
passing	I-Architecture
which	O
will	O
enhance	O
scaling	B-Architecture
and	O
reliability	O
on	O
symmetric	B-Operating_System
multiprocessing	I-Operating_System
(	O
SMP	B-Operating_System
)	O
platforms	O
while	O
also	O
being	O
applicable	O
to	O
NUMA	B-Operating_System
and	O
clustered	B-Architecture
systems	I-Architecture
.	O
</s>
<s>
The	O
long-term	O
goal	O
is	O
to	O
provide	O
a	O
transparent	O
single	B-Operating_System
system	I-Operating_System
image	I-Operating_System
in	O
clustered	B-Architecture
environments	O
.	O
</s>
<s>
DragonFly	B-Application
BSD	I-Application
originally	O
supported	O
both	O
the	O
IA-32	B-Device
and	O
x86-64	B-Device
platforms	O
,	O
however	O
support	O
for	O
IA-32	B-Device
was	O
dropped	O
in	O
version	O
4.0	O
.	O
</s>
<s>
Matthew	O
Dillon	O
,	O
the	O
founder	O
of	O
DragonFly	B-Application
BSD	I-Application
,	O
believes	O
supporting	O
fewer	O
platforms	O
makes	O
it	O
easier	O
for	O
a	O
project	O
to	O
do	O
a	O
proper	O
,	O
ground-up	O
symmetric	B-Operating_System
multiprocessing	I-Operating_System
implementation	O
.	O
</s>
<s>
In	O
September	O
2005	O
,	O
the	O
BSD	B-Operating_System
Certification	O
Group	O
,	O
after	O
advertising	O
on	O
a	O
number	O
of	O
mailing	O
lists	O
,	O
surveyed	O
4,330	O
BSD	B-Operating_System
users	O
,	O
3,958	O
of	O
whom	O
took	O
the	O
survey	O
in	O
English	O
,	O
to	O
assess	O
the	O
relative	O
popularity	O
of	O
the	O
various	O
BSD	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
About	O
77%	O
of	O
respondents	O
used	O
FreeBSD	B-Operating_System
,	O
33%	O
used	O
OpenBSD	B-Operating_System
,	O
16%	O
used	O
NetBSD	B-Device
,	O
2.6	O
%	O
used	O
Dragonfly	B-Application
,	O
and	O
6.6	O
%	O
used	O
other	O
(	O
potentially	O
non-BSD	O
)	O
systems	O
.	O
</s>
<s>
Those	O
who	O
checked	O
"	O
Other	O
"	O
were	O
asked	O
to	O
specify	O
that	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Another	O
attempt	O
to	O
profile	O
worldwide	O
BSD	B-Operating_System
usage	O
is	O
the	O
*	O
BSDstats	O
Project	O
,	O
whose	O
primary	O
goal	O
is	O
to	O
demonstrate	O
to	O
hardware	O
vendors	O
the	O
penetration	O
of	O
BSD	B-Operating_System
and	O
viability	O
of	O
hardware	O
drivers	O
for	O
the	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
The	O
project	O
collects	O
data	O
monthly	O
from	O
any	O
BSD	B-Operating_System
system	O
administrators	O
willing	O
to	O
participate	O
,	O
and	O
currently	O
records	O
the	O
BSD	B-Operating_System
market	O
share	O
of	O
participating	O
FreeBSD	B-Operating_System
,	O
OpenBSD	B-Operating_System
,	O
NetBSD	B-Device
,	O
DragonflyBSD	B-Application
,	O
Debian	O
GNU/kFreeBSD	O
,	O
TrueOS	B-Application
,	O
and	O
MirBSD	B-Application
systems	O
.	O
</s>
<s>
DistroWatch	O
,	O
well	O
known	O
in	O
the	O
Linux	B-Application
community	O
and	O
often	O
used	O
as	O
a	O
rough	O
guide	O
to	O
free	O
operating	B-General_Concept
system	I-General_Concept
popularity	O
,	O
publishes	O
page	O
hits	O
for	O
each	O
of	O
the	O
Linux	B-Application
distributions	O
and	O
other	O
operating	B-General_Concept
systems	I-General_Concept
it	O
covers	O
.	O
</s>
<s>
As	O
of	O
27	O
March	O
2020	O
,	O
using	O
a	O
data	O
span	O
of	O
the	O
last	O
six	O
months	O
it	O
placed	O
FreeBSD	B-Operating_System
in	O
21st	O
place	O
with	O
452	O
hits	O
per	O
day	O
,	O
GhostBSD	B-Application
in	O
51st	O
place	O
with	O
243	O
hits	O
,	O
TrueOS	B-Application
in	O
54th	O
place	O
with	O
182	O
hits	O
per	O
day	O
,	O
DragonflyBSD	B-Application
in	O
75th	O
place	O
with	O
180	O
hits	O
,	O
OpenBSD	B-Operating_System
in	O
80th	O
place	O
with	O
169	O
hits	O
per	O
day	O
and	O
NetBSD	B-Device
in	O
109th	O
place	O
with	O
105	O
hits	O
per	O
day	O
.	O
</s>
<s>
The	O
names	O
FreeBSD	B-Operating_System
and	O
OpenBSD	B-Operating_System
are	O
references	O
to	O
software	O
freedom	O
:	O
both	O
in	O
cost	O
and	O
open	B-Application
source	I-Application
.	O
</s>
<s>
NetBSD	B-Device
's	O
name	O
is	O
a	O
tribute	O
to	O
the	O
Internet	O
,	O
which	O
brought	O
the	O
original	O
developers	O
together	O
.	O
</s>
<s>
The	O
first	O
BSD	B-Operating_System
mascot	O
was	O
the	O
BSD	B-Operating_System
daemon	B-Operating_System
,	O
named	O
after	O
a	O
common	O
type	O
of	O
Unix	B-Application
software	O
program	O
,	O
a	O
daemon	B-Operating_System
.	O
</s>
<s>
FreeBSD	B-Operating_System
still	O
uses	O
the	O
image	O
,	O
a	O
red	O
cartoon	O
daemon	B-Operating_System
named	O
Beastie	O
,	O
wielding	O
a	O
pitchfork	O
,	O
as	O
its	O
mascot	O
today	O
.	O
</s>
<s>
In	O
2005	O
,	O
after	O
a	O
competition	O
,	O
a	O
stylized	O
version	O
of	O
Beastie	O
's	O
head	O
designed	O
and	O
drawn	O
by	O
Anton	O
Gural	O
was	O
chosen	O
as	O
the	O
FreeBSD	B-Operating_System
logo	O
.	O
</s>
<s>
The	O
FreeBSD	B-Operating_System
slogan	O
is	O
"	O
The	O
Power	O
to	O
Serve.	O
"	O
</s>
<s>
The	O
NetBSD	B-Device
flag	O
,	O
designed	O
in	O
2004	O
by	O
Grant	O
Bissett	O
,	O
is	O
inspired	O
by	O
the	O
original	O
NetBSD	B-Device
logo	O
,	O
designed	O
in	O
1994	O
by	O
Shawn	O
Mueller	O
,	O
portraying	O
a	O
number	O
of	O
BSD	B-Operating_System
daemons	B-Operating_System
raising	O
a	O
flag	O
on	O
top	O
of	O
a	O
mound	O
of	O
computer	O
equipment	O
.	O
</s>
<s>
The	O
Board	O
of	O
Directors	O
of	O
The	O
NetBSD	B-Device
Foundation	O
believed	O
this	O
was	O
too	O
complicated	O
,	O
too	O
hard	O
to	O
reproduce	O
and	O
had	O
negative	O
cultural	O
ramifications	O
and	O
was	O
thus	O
not	O
a	O
suitable	O
image	O
for	O
NetBSD	B-Device
in	O
the	O
corporate	O
world	O
.	O
</s>
<s>
The	O
NetBSD	B-Device
slogan	O
is	O
"	O
Of	O
course	O
it	O
runs	O
NetBSD	B-Device
"	O
,	O
referring	O
to	O
the	O
operating	B-General_Concept
system	I-General_Concept
's	O
portability	B-Architecture
.	O
</s>
<s>
Originally	O
,	O
OpenBSD	B-Operating_System
used	O
the	O
BSD	B-Operating_System
daemon	B-Operating_System
as	O
a	O
mascot	O
,	O
sometimes	O
with	O
an	O
added	O
halo	O
as	O
a	O
distinguishing	O
mark	O
,	O
but	O
OpenBSD	B-Operating_System
later	O
replaced	O
its	O
BSD	B-Operating_System
daemon	B-Operating_System
with	O
Puffy	O
.	O
</s>
<s>
The	O
logo	O
is	O
a	O
reference	O
to	O
the	O
fish	O
's	O
defensive	O
capabilities	O
and	O
to	O
the	O
Blowfish	B-Algorithm
cryptography	O
algorithm	O
used	O
in	O
OpenSSH	B-Language
.	O
</s>
<s>
OpenBSD	B-Operating_System
also	O
has	O
a	O
number	O
of	O
slogans	O
including	O
"	O
Secure	O
by	O
default	O
"	O
,	O
which	O
was	O
used	O
in	O
the	O
first	O
OpenBSD	B-Operating_System
song	O
,	O
"	O
E-railed	O
"	O
,	O
and	O
"	O
Free	O
,	O
Functional	O
&	O
Secure	O
"	O
,	O
and	O
OpenBSD	B-Operating_System
has	O
released	O
at	O
least	O
one	O
original	O
song	O
with	O
every	O
release	O
since	O
3.0	O
.	O
</s>
<s>
The	O
DragonFly	B-Application
BSD	I-Application
logo	O
,	O
designed	O
by	O
Joe	O
Angrisano	O
,	O
is	O
a	O
dragonfly	B-Application
named	O
Fred	O
.	O
</s>
<s>
A	O
number	O
of	O
unofficial	O
logos	O
by	O
various	O
authors	O
also	O
show	O
the	O
dragonfly	B-Application
or	O
stylized	O
versions	O
of	O
it	O
.	O
</s>
<s>
DragonFly	B-Application
BSD	I-Application
considers	O
itself	O
to	O
be	O
"	O
the	O
logical	O
continuation	O
of	O
the	O
FreeBSD	B-Operating_System
4.x	O
series.	O
"	O
</s>
<s>
FireflyBSD	O
has	O
a	O
similar	O
logo	O
,	O
a	O
firefly	O
,	O
showing	O
its	O
close	O
relationship	O
to	O
DragonFly	B-Application
BSD	I-Application
.	O
</s>
<s>
In	O
fact	O
,	O
the	O
FireflyBSD	O
website	O
states	O
that	O
proceeds	O
from	O
sales	O
will	O
go	O
to	O
the	O
development	O
of	O
DragonFly	B-Application
BSD	I-Application
,	O
suggesting	O
that	O
the	O
two	O
may	O
in	O
fact	O
be	O
very	O
closely	O
related	O
.	O
</s>
<s>
PicoBSD	B-Application
's	O
slogan	O
is	O
"	O
For	O
the	O
little	O
BSD	B-Operating_System
in	O
all	O
of	O
us	O
,	O
"	O
and	O
its	O
logo	O
includes	O
a	O
version	O
of	O
FreeBSD	B-Operating_System
's	O
Beastie	O
as	O
a	O
child	O
,	O
showing	O
its	O
close	O
connection	O
to	O
FreeBSD	B-Operating_System
,	O
and	O
the	O
minimal	O
amount	O
of	O
code	O
needed	O
to	O
run	O
as	O
a	O
Live	O
CD	O
.	O
</s>
<s>
A	O
number	O
of	O
BSD	B-Operating_System
OSes	O
use	O
stylized	O
version	O
of	O
their	O
respective	O
names	O
for	O
logos	O
.	O
</s>
<s>
This	O
includes	O
macOS	B-Application
,	O
TrueOS	B-Application
,	O
GhostBSD	B-Application
,	O
DesktopBSD	B-Application
,	O
ClosedBSD	O
,	O
and	O
MicroBSD	O
.	O
</s>
<s>
TrueOS	B-Application
's	O
slogan	O
is	O
"	O
Personal	O
computing	O
,	O
served	O
up	O
BSD	B-Operating_System
style	O
!	O
</s>
<s>
"	O
,	O
GhostBSD	B-Application
's	O
"	O
A	O
simple	O
,	O
secure	O
BSD	B-Operating_System
served	O
on	O
a	O
Desktop.	O
"	O
</s>
<s>
DesktopBSD	B-Application
's	O
"	O
A	O
Step	O
Towards	O
BSD	B-Operating_System
on	O
the	O
Desktop.	O
"	O
</s>
<s>
MicroBSD	O
's	O
slogan	O
is	O
"	O
The	O
small	O
secure	O
unix	B-Operating_System
like	I-Operating_System
OS.	O
"	O
</s>
<s>
MirOS	B-Application
's	O
site	O
collects	O
a	O
variety	O
of	O
BSD	B-Operating_System
mascots	O
and	O
Tux	B-Application
,	O
the	O
Linux	B-Application
mascot	I-Application
,	O
together	O
,	O
illustrating	O
the	O
project	O
's	O
aim	O
of	O
supporting	O
both	O
BSD	B-Operating_System
and	O
Linux	B-Application
kernels	O
.	O
</s>
<s>
MirOS	B-Application
's	O
slogan	O
is	O
"	O
a	O
wonderful	O
operating	B-General_Concept
system	I-General_Concept
for	O
a	O
world	O
of	O
peace.	O
"	O
</s>
<s>
+Overview	O
of	O
BSD	B-Operating_System
versionsName	O
Primary	O
developers	O
First	O
public	O
release	O
Based	O
on	O
Latest	O
stable	O
version	O
Cost	O
(	O
USD	O
)	O
Preferred	O
license	B-License
Purpose	O
Short	O
description	O
Version	O
Release	O
Date	O
FreeBSD	B-Operating_System
The	O
FreeBSD	B-Operating_System
Project	I-Operating_System
1993-12-01	O
386BSD	B-Operating_System
,	O
4.4BSD-Lite	O
13.1	O
2022-05-16	O
Simplified	O
BSD	B-Operating_System
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
,	O
Embedded	B-Architecture
Aims	O
to	O
be	O
usable	O
for	O
any	O
purpose	O
.	O
</s>
<s>
OpenBSD	B-Operating_System
The	O
OpenBSD	B-Operating_System
Project	I-Operating_System
1996-09-01	O
NetBSD	B-Device
1.0	I-Device
7.2	O
2022-10-20	O
ISC	B-License
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
,	O
Embedded	B-Architecture
Aims	O
for	O
maximum	O
correctness	O
in	O
code	O
,	O
bringing	O
simplicity	O
and	O
security	O
.	O
</s>
<s>
NetBSD	B-Device
The	O
NetBSD	B-Device
Project	O
1993-04-19	O
386BSD	B-Operating_System
,	O
4.4BSD-Lite	O
9.3	O
2022-08-04	O
Simplified	O
BSD	B-Operating_System
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
,	O
Embedded	B-Architecture
Aims	O
for	O
maximum	O
portability	B-Architecture
.	O
</s>
<s>
DragonFly	B-Application
BSD	I-Application
Matt	O
Dillon	O
2004-07-12	O
FreeBSD	B-Operating_System
4.8	O
6.2.2	O
2022-06-09	O
Modified	O
BSD	B-Operating_System
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
,	O
Embedded	B-Architecture
Aims	O
for	O
maximum	O
scalability	B-Architecture
.	O
</s>
<s>
386BSD	B-Operating_System
William	O
and	O
Lynne	O
Jolitz	O
1992-03-01	O
4.3BSD	B-Operating_System
Net/2	O
2.0	O
2016-08-05	O
BSD	B-Operating_System
Open	B-Application
source	I-Application
general	O
purpose	O
Historical	O
BSD/OS	B-Operating_System
(	O
BSD/386	B-Operating_System
)	O
BSDi	O
,	O
Wind	O
River	O
Systems	O
1993-03-01	O
4.3BSD	B-Operating_System
Net/2	O
,	O
4.4BSD	O
5.1	O
2003-10-01	O
General	O
purpose	O
Historical	O
SunOS	B-Operating_System
Sun	O
Microsystems	O
1982	O
4.xBSD	O
,	O
UNIX	B-Operating_System
System	I-Operating_System
V	I-Operating_System
4.1.4	O
1994-11-01	O
Included	O
in	O
hardware	O
and	O
support	O
charges	O
Server	B-Application
,	O
Workstation	B-Device
Historical	O
(	O
Solaris	B-Application
is	O
a	O
different	O
code	B-General_Concept
base	I-General_Concept
)	O
Ultrix	B-Operating_System
Digital	O
Equipment	O
Corporation	O
1984	O
4.2BSD	O
,	O
SVR2	B-Operating_System
4.5	O
1995	O
General	O
Purpose	O
Historical	O
(	O
ran	O
on	O
DEC	B-Device
VAX	I-Device
&	O
MIPS	B-Device
systems	O
or	O
emulators	B-Application
)	O
.RISCiXAcorn	O
Computers19884.3	O
BSD	B-Operating_System
,	O
Unix	B-Application
System	I-Application
V1.31c1993-09-07	O
£1000	O
GBP	O
(	O
Approx	O
$1400	O
)	O
WorkstationHistorical	O
(	O
ran	O
on	O
Archimedes	B-Device
and	O
R	O
series	O
Workstations	B-Device
)	O
Tru64	B-Operating_System
UNIX	I-Operating_System
(	O
DEC	B-Operating_System
OSF/1	I-Operating_System
,	O
Digital	B-Operating_System
UNIX	I-Operating_System
)	O
DEC	O
,	O
Compaq	O
,	O
HP	O
1993	O
4.3BSD	B-Operating_System
,	O
4.4BSD	O
,	O
Mach	B-Operating_System
2.5	O
,	O
UNIX	B-Operating_System
System	I-Operating_System
V	I-Operating_System
5.1B-6	O
2010-10-01	O
$99	O
(	O
non-commercial	O
)	O
General	O
Purpose	O
Only	O
runs	O
on	O
HP	B-Device
Alpha	I-Device
systems	O
or	O
emulators	B-Application
.	O
</s>
<s>
macOS	B-Application
Apple	O
Inc	O
.	O
2001-03-24	O
Darwin	B-Operating_System
13.2	B-Operating_System
“	I-Operating_System
Ventura	I-Operating_System
”	I-Operating_System
2023-01-18	O
Open	B-Application
source	I-Application
core	O
system	O
(	O
see	O
Darwin	B-Operating_System
)	O
with	O
proprietary	B-Application
higher	O
level	O
API	O
layers	O
locking	O
to	O
Apple	O
hardware	O
Workstation	B-Device
,	O
Home	O
Desktop	O
,	O
Server	B-Application
Ships	O
with	O
Apple	B-Device
Macs	I-Device
,	O
locked	O
for	O
use	O
with	O
Apple	O
hardware	O
only	O
iOS	B-Operating_System
Apple	I-Operating_System
Inc	O
.	O
2007-06-01	O
Darwin	B-Operating_System
16.3	O
2023-01-18	O
Open	B-Application
source	I-Application
core	O
system	O
(	O
see	O
Darwin	B-Operating_System
)	O
with	O
proprietary	B-Application
higher	O
level	O
API	O
layers	O
locking	O
to	O
Apple	O
hardware	O
Embedded	B-Architecture
mobile	B-Application
device	I-Application
Ships	O
with	O
Apple	O
iPhones	B-Device
iPadOSApple	O
Inc.2019-09-24Darwin16.32023-01-18	O
Open	B-Application
source	I-Application
core	O
system	O
(	O
see	O
Darwin	B-Operating_System
)	O
with	O
proprietary	B-Application
higher	O
level	O
API	O
layers	O
locking	O
to	O
Apple	O
hardwareEmbedded	O
mobile	O
deviceShips	O
with	O
Apple	B-Device
iPads	I-Device
tvOSApple	O
Inc.2015-10-29Darwin16.32023-01-18	O
Open	B-Application
source	I-Application
core	O
system	O
(	O
see	O
Darwin	B-Operating_System
)	O
with	O
proprietary	B-Application
higher	O
level	O
API	O
layers	O
locking	O
to	O
Apple	O
hardwareShips	O
with	O
Apple	B-Device
TVs	I-Device
watchOSApple	O
Inc.2015-04-24Darwin9.32023-01-18	O
Open	B-Application
source	I-Application
core	O
system	O
(	O
see	O
Darwin	B-Operating_System
)	O
with	O
proprietary	B-Application
higher	O
level	O
API	O
layers	O
locking	O
to	O
Apple	O
hardwareEmbedded	O
mobile	O
deviceShips	O
with	O
Apple	B-Device
Watches	I-Device
Darwin	B-Operating_System
Apple	O
Inc	O
.	O
2001-03-01	O
NeXTSTEP	B-Application
,	O
FreeBSD	B-Operating_System
,	O
classic	B-Application
Mac	I-Application
OS	I-Application
22.2.0	O
2022-12-13	O
APSL	B-License
,	O
GPL	B-License
and	O
others	O
Workstation	B-Device
,	O
Home	O
Desktop	O
,	O
Server	B-Application
The	O
kernel	O
and	O
certain	O
userland	B-Operating_System
components	O
of	O
macOS	B-Application
and	O
iOS	B-Application
TrueOS	B-Application
iXsystems	O
,	O
Inc	O
.	O
2006-04-29	O
FreeBSD	B-Operating_System
18.12	O
2018-12-15	O
BSDServer	O
Easy	O
to	O
use	O
while	O
maintaining	O
full	O
use	O
of	O
FreeBSD	B-Operating_System
base	O
GhostBSD	B-Application
Eric	O
Turgeon	O
2009-11-01	O
FreeBSD	B-Operating_System
20.01	O
2020-01-22	O
BSD	B-Operating_System
Desktop	O
,	O
Workstation	B-Device
Easy	O
to	O
use	O
,	O
full	O
FreeBSD	B-Operating_System
w/	O
GNOME	B-Application
,	O
Mate	B-Language
,	O
Xfce	B-Language
,	O
LXDE	B-Language
or	O
Openbox	B-Language
.	O
</s>
<s>
FuryBSD	O
Joe	O
Maloney	O
2019-10-24	O
FreeBSD	B-Operating_System
2019-12-02	O
BSD	B-Operating_System
Desktop	O
,	O
Workstation	B-Device
Easy	O
to	O
use	O
,	O
full	O
FreeBSD	B-Operating_System
w/	O
Xfce	B-Language
or	O
KDE	B-Application
.	O
</s>
<s>
DesktopBSD	B-Application
Peter	O
Hofer	O
,	O
Daniel	O
Seuffert	O
2005-07-25	O
FreeBSD	B-Operating_System
1.7	O
2009-09-07	O
BSD	B-Operating_System
Desktop	O
Easy	O
to	O
use	O
ClosedBSD	O
Joshua	O
Bergeron	O
and	O
various	O
contributors	O
FreeBSD	B-Operating_System
1.0B	O
(	O
floppy	O
)	O
,	O
1.0-RC1	O
(	O
CD	O
)	O
firewall/NAT	O
,	O
boot	O
floppy	O
,	O
Live	O
CD	O
FreeSBIE	B-Application
FreeBSD	B-Operating_System
2.0.3	O
2007-02-01	O
Live	O
CD	O
of	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
PicoBSD	B-Application
Michael	O
Bialecki	O
FreeBSD	B-Operating_System
0.42	O
BSD	B-Operating_System
boot	O
floppy	O
Anonym.OS	B-Application
2005-01-01	O
OpenBSD	B-Operating_System
3.8	O
none	O
(	O
beta	O
only	O
)	O
Anonymous	O
browsing	O
Live	O
CD	O
MirOS	B-Application
BSD	I-Application
The	O
MirOS	B-Application
Project	O
OpenBSD	B-Operating_System
3.1	O
#10	O
2008-03-16	O
European	O
ekkoBSD	O
Rick	O
Collette	O
OpenBSD	B-Operating_System
3.3	O
Server	B-Application
easy	O
to	O
administer	O
MicroBSD	O
Bulgarians	O
OpenBSD	B-Operating_System
3.0/3.4	O
0.6	O
2003-10-27	O
General	O
purpose	O
Small	O
,	O
secure	O
OliveBSD	B-Application
Gabriel	O
Paderni	O
OpenBSD	B-Operating_System
3.8	O
Live	O
CD	O
DistroWatch	O
lists	O
as	O
discontinued	O
.	O
</s>
<s>
Gentoo/FreeBSD	O
Gentoo	B-Application
Linux	I-Application
developers	O
FreeBSD	B-Operating_System
GPL	B-License
,	O
BSD	B-Operating_System
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
uses	O
Gentoo	B-Application
framework	O
Gentoo/OpenBSD	O
Gentoo	B-Application
Linux	I-Application
developers	O
OpenBSD	B-Operating_System
GPL	B-License
,	O
BSD	B-Operating_System
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
,	O
Embedded	B-Architecture
uses	O
Gentoo	B-Application
framework	O
Gentoo/NetBSD	O
Gentoo	B-Application
Linux	I-Application
developers	O
NetBSD	B-Device
GPL	B-License
,	O
BSD	B-Operating_System
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
,	O
Embedded	B-Architecture
uses	O
Gentoo	B-Application
framework	O
Gentoo/DragonflyBSD	O
Robert	O
Sebastian	O
Gerus	O
(	O
project	O
not	O
yet	O
officially	O
supported	O
by	O
Gentoo	B-Application
)	O
DragonFly	B-Application
BSD	I-Application
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
uses	O
Gentoo	B-Application
framework	O
Debian	O
GNU/kFreeBSD	O
The	O
Debian	O
GNU/kFreeBSD	O
team	O
2011-02-06	O
GNU	B-Operating_System
,	O
FreeBSD	B-Operating_System
7.5	O
2014-04-26	O
DFSG	O
General	O
purpose	O
GNU	B-Operating_System
userspace	B-Operating_System
on	O
FreeBSD	B-Operating_System
kernel	O
Debian	O
GNU/NetBSD	O
The	O
Debian	O
GNU/kNetBSD	O
team	O
Abandoned	O
GNU	B-Operating_System
,	O
NetBSD	B-Device
Abandoned	O
Abandoned	O
DFSG	O
General	O
purpose	O
GNU	B-Operating_System
userspace	B-Operating_System
on	O
NetBSD	B-Device
kernel	I-Device
MidnightBSD	B-Application
Lucas	O
Holt	O
2007-08-04	O
FreeBSD	B-Operating_System
6.1	O
beta	O
3.0.1	O
2023-04-03	O
BSD	B-Operating_System
Desktop	O
GNUstep	B-Application
based	O
Desktop	O
Environment	O
pfSense	B-Protocol
various	O
contributors	O
2006-10-04	O
FreeBSD	B-Operating_System
2.5.2	O
2021-07-17	O
BSD	B-Operating_System
Security	O
appliance	O
firewall/NAT	O
,	O
Live	O
CD	O
Paxym	O
FreeBSD	B-Operating_System
for	O
Octeon	O
Paxym	O
Inc	O
.	O
2007-12-11	O
FreeBSD	B-Operating_System
7.0	O
4.7	O
2008-08-13	O
Network	O
,	O
Storage	O
,	O
Security	O
Applications	O
:	O
Routers/UTM/Firewall/NAS	O
For	O
Cavium	O
Networks	O
Octeon	O
MIPS	B-Device
architecture	I-Device
multicore	O
processors	O
MaheshaBSD	O
FreeBSD	B-Operating_System
8	O
BSD	B-Operating_System
FreeBSD	B-Operating_System
multipurpose	O
KarmaBSD	O
FreeBSD	B-Operating_System
8OpenBSD	O
Free	B-Application
software	I-Application
FreeBSD	B-Operating_System
,	O
OpenBSD	B-Operating_System
Firewall	O
,	O
MP3	O
player	O
,	O
backup	O
,	O
others	O
Jibbedjibbed.org	O
OpenBSD	B-Operating_System
,	O
NetBSD	B-Device
6.0	O
BSDLive	O
CD	O
of	O
NetBSD	B-Device
Bitrig	B-Application
The	O
Bitrig	B-Application
Developers	O
2014-11-25	O
OpenBSD	B-Operating_System
1.0	O
2014-11-25	O
ISC	B-License
General	O
Purpose	O
Focus	O
on	O
modern	O
platforms	O
and	O
tools	O
StarBSD	O
digital	O
IXI	O
Corp	O
2009-12-01	O
FreeBSD	B-Operating_System
2020.3	O
2020-03-25	O
Simplified	O
BSD	B-Operating_System
Server	B-Application
,	O
Workstation	B-Device
,	O
Network	B-Application
Appliance	I-Application
,	O
Embedded	B-Architecture
Aims	O
for	O
maximum	O
scalability	B-Architecture
.	O
</s>
