<s>
BSD/OS	B-Operating_System
(	O
originally	O
called	O
BSD/386	B-Operating_System
and	O
sometimes	O
known	O
as	O
BSDi	O
)	O
is	O
a	O
discontinued	O
proprietary	O
version	O
of	O
the	O
BSD	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
developed	O
by	O
Berkeley	O
Software	O
Design	O
,	O
Inc	O
.	O
(	O
BSDi	O
)	O
.	O
</s>
<s>
BSD/OS	B-Operating_System
had	O
a	O
reputation	O
for	O
reliability	O
in	O
server	B-Application
roles	O
;	O
the	O
renowned	O
Unix	O
programmer	O
and	O
author	O
W	O
.	O
Richard	O
Stevens	O
used	O
it	O
for	O
his	O
own	O
personal	O
web	B-Application
server	I-Application
.	O
</s>
<s>
BSDi	O
was	O
formed	O
in	O
1991	O
by	O
members	O
of	O
the	O
Computer	B-Operating_System
Systems	I-Operating_System
Research	I-Operating_System
Group	I-Operating_System
(	O
CSRG	B-Operating_System
)	O
at	O
UC	O
Berkeley	O
to	O
develop	O
and	O
sell	O
a	O
proprietary	O
version	O
of	O
BSD	B-Operating_System
Unix	I-Operating_System
for	O
PC	O
compatible	O
systems	O
with	O
Intel	B-General_Concept
386	I-General_Concept
(	O
or	O
later	O
)	O
processors	O
.	O
</s>
<s>
This	O
made	O
use	O
of	O
work	O
previously	O
done	O
by	O
Bill	O
Jolitz	O
to	O
port	O
BSD	B-Operating_System
to	O
the	O
PC	O
platform	O
.	O
</s>
<s>
BSD/386	B-Operating_System
1.0	O
was	O
released	O
in	O
March	O
1993	O
.	O
</s>
<s>
The	O
company	O
sold	O
licenses	O
and	O
support	O
for	O
it	O
,	O
taking	O
advantage	O
of	O
terms	O
in	O
the	O
BSD	B-Operating_System
License	I-Operating_System
which	O
permit	O
use	O
of	O
the	O
BSD	B-Operating_System
software	O
in	O
proprietary	O
systems	O
,	O
as	O
long	O
the	O
author	O
is	O
credited	O
.	O
</s>
<s>
The	O
company	O
in	O
turn	O
contributed	O
code	O
and	O
resources	O
to	O
the	O
development	O
of	O
non-proprietary	O
BSD	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
In	O
the	O
meantime	O
,	O
Jolitz	O
had	O
left	O
BSDi	O
and	O
independently	O
released	O
an	O
open	B-Application
source	I-Application
BSD	B-Operating_System
for	O
PCs	O
,	O
called	O
386BSD	B-Operating_System
.	O
</s>
<s>
The	O
BSDi	O
system	O
features	O
complete	O
and	O
thorough	O
manpage	B-Protocol
documentation	O
for	O
the	O
entire	O
system	O
,	O
including	O
complete	O
syntax	O
and	O
argument	O
explanations	O
,	O
examples	O
,	O
file	O
usage	O
,	O
authors	O
,	O
and	O
cross-references	O
to	O
other	O
commands	O
.	O
</s>
<s>
BSD/386	B-Operating_System
licenses	O
(	O
including	O
source	O
code	O
)	O
were	O
priced	O
at	O
$995	O
,	O
lower	O
than	O
AT&T	B-Operating_System
UNIX	I-Operating_System
System	B-Operating_System
V	I-Operating_System
source	O
licenses	O
,	O
a	O
fact	O
highlighted	O
in	O
their	O
advertisements	O
.	O
</s>
<s>
As	O
part	O
of	O
the	O
settlement	O
of	O
USL	B-Operating_System
v	I-Operating_System
.	I-Operating_System
BSDi	I-Operating_System
,	O
BSDI	O
substituted	O
code	O
that	O
had	O
been	O
written	O
for	O
the	O
University	O
's	O
4.4	O
BSD-Lite	O
release	O
for	O
disputed	O
code	O
in	O
their	O
OS	O
,	O
effective	O
with	O
release	O
2.0	O
.	O
</s>
<s>
By	O
the	O
time	O
of	O
this	O
release	O
,	O
the	O
"	O
386	B-General_Concept
"	O
designation	O
had	O
become	O
dated	O
,	O
and	O
BSD/386	B-Operating_System
was	O
renamed	O
"	O
BSD/OS	B-Operating_System
"	O
.	O
</s>
<s>
Later	O
releases	O
of	O
BSD/OS	B-Operating_System
also	O
support	O
Sun	O
SPARC-based	O
systems	O
.	O
</s>
<s>
BSD/OS	B-Operating_System
5.x	O
versions	O
are	O
available	O
for	O
PowerPC	B-Architecture
too	O
.	O
</s>
<s>
The	O
marketing	O
of	O
BSD/OS	B-Operating_System
became	O
increasingly	O
focused	O
on	O
Internet	O
server	B-Application
applications	I-Application
.	O
</s>
<s>
However	O
,	O
the	O
increasingly	O
tight	O
market	O
for	O
Unix-compatible	B-Operating_System
software	I-Operating_System
in	O
the	O
late	O
1990s	O
and	O
early	O
2000s	O
hurt	O
sales	O
of	O
BSD/OS	B-Operating_System
.	O
</s>
<s>
On	O
one	O
end	O
of	O
the	O
market	O
,	O
it	O
lacked	O
the	O
certification	O
of	O
the	B-Application
Open	I-Application
Group	I-Application
to	O
bear	O
the	O
UNIX	O
trademark	O
,	O
and	O
the	O
sales	O
force	O
and	O
hardware	O
support	O
of	O
the	O
larger	O
Unix	O
vendors	O
.	O
</s>
<s>
Simultaneously	O
,	O
it	O
lacked	O
the	O
negligible	O
acquisition	O
cost	O
of	O
the	O
open	B-Application
source	I-Application
BSDs	B-Operating_System
and	O
Linux	B-Application
.	O
</s>
<s>
BSD/OS	B-Operating_System
was	O
acquired	O
by	O
Wind	O
River	O
Systems	O
in	O
April	O
2001	O
.	O
</s>
<s>
Wind	O
River	O
discontinued	O
sales	O
of	O
BSD/OS	B-Operating_System
at	O
the	O
end	O
of	O
2003	O
,	O
with	O
support	O
terminated	O
at	O
the	O
end	O
of	O
2004	O
.	O
</s>
