<s>
Crystal	B-Language
Space	I-Language
is	O
an	O
unmaintained	O
framework	O
for	O
developing	O
3D	O
applications	O
written	O
in	O
C++	B-Language
by	O
Jorrit	O
Tyberghein	O
and	O
others	O
.	O
</s>
<s>
It	O
is	O
very	O
portable	O
and	O
runs	O
on	O
Microsoft	B-Application
Windows	I-Application
,	O
Linux	B-Application
,	O
UNIX	B-Application
,	O
and	O
Mac	B-Application
OS	I-Application
X	I-Application
.	O
</s>
<s>
It	O
is	O
also	O
free	B-License
and	I-License
open-source	I-License
software	I-License
,	O
licensed	O
under	O
the	O
GNU	B-Application
LGPL-2.0-or-later	I-Application
,	O
and	O
was	O
net	O
's	O
Project	O
of	O
the	O
Month	O
for	O
February	O
2003	O
.	O
</s>
<s>
Crystal	B-Language
Space	I-Language
is	O
programmed	O
in	O
object	B-Language
oriented	I-Language
C++	B-Language
.	O
</s>
<s>
It	O
is	O
very	O
modularly	O
built	O
with	O
a	O
number	O
of	O
more	O
or	O
less	O
independent	O
plugins	B-Application
.	O
</s>
<s>
The	O
client	B-Protocol
programs	I-Protocol
use	O
the	O
plugins	B-Application
,	O
such	O
as	O
the	O
OpenGL	B-Application
3D	O
renderer	O
,	O
by	O
registering	O
them	O
via	O
Crystal	B-Language
Space	I-Language
's	O
Shared	O
Class	O
Facility	O
(	O
SCF	O
)	O
.	O
</s>
<s>
Crystal	B-Language
Space	I-Language
has	O
modules	O
for	O
2D	O
and	O
3D	O
graphics	O
,	O
sound	O
,	O
collision	O
detection	O
and	O
physics	O
through	O
ODE	B-Application
and	O
Bullet	B-Application
.	O
</s>
<s>
The	O
engine	O
was	O
for	O
instance	O
used	O
for	O
the	O
OpenOutcast	O
and	O
PlaneShift	B-Application
projects	O
.	O
</s>
<s>
It	O
was	O
the	O
Project	O
of	O
the	O
Month	O
on	O
SourceForge	B-Application
in	O
February	O
2003	O
.	O
</s>
