<s>
Ghost	O
is	O
an	O
open-source	B-License
hobbyist	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
and	O
kernel	B-Operating_System
.	O
</s>
<s>
It	O
has	O
been	O
under	O
development	O
since	O
2014	O
and	O
is	O
currently	O
compatible	O
with	O
the	O
x86	B-Operating_System
platform	I-Operating_System
.	O
</s>
<s>
The	O
system	O
is	O
based	O
on	O
a	O
microkernel	B-Operating_System
and	O
features	O
symmetric	B-Operating_System
multi-processing	I-Operating_System
and	O
multitasking	B-Operating_System
.	O
</s>
<s>
Most	O
of	O
the	O
kernel	B-Operating_System
and	O
system	O
program	O
are	O
written	O
in	O
C++	B-Language
.	O
</s>
<s>
Many	O
of	O
the	O
functionalities	O
that	O
are	O
usually	O
integrated	O
in	O
the	O
kernel	B-Operating_System
in	O
a	O
monolithic	B-Operating_System
or	O
hybrid	B-Operating_System
system	O
are	O
implemented	O
as	O
user-level	O
applications	O
.	O
</s>
<s>
The	O
kernel	B-Operating_System
provides	O
a	O
system	O
call	O
API	B-Application
that	O
is	O
used	O
for	O
all	O
inter-process	O
communications	O
and	O
system	O
commands	O
.	O
</s>
<s>
The	O
libc	B-Language
implementation	O
is	O
partially	O
POSIX.1	O
compatible	O
.	O
</s>
<s>
The	O
implementation	O
incorporates	O
the	O
libm	O
from	O
the	O
musl	B-Language
C	I-Language
library	I-Language
.	O
</s>
<s>
The	O
C++	B-Language
standard	I-Language
library	I-Language
libstdc++	B-Language
is	O
supported	O
.	O
</s>
<s>
This	O
was	O
introduced	O
to	O
allow	O
porting	O
of	O
third-party	O
software	O
,	O
especially	O
from	O
the	O
GNU	B-Operating_System
environment	O
,	O
which	O
heavily	O
depend	O
on	O
standard	B-Language
C	I-Language
and	O
POSIX	O
functions	O
.	O
</s>
