<s>
The	O
XAD	B-Application
system	O
is	O
an	O
open-source	B-Application
client-based	O
unarchiving	O
system	O
for	O
the	O
Amiga	B-Device
.	O
</s>
<s>
This	O
means	O
there	O
is	O
a	O
master	O
library	O
called	O
xadmaster.library	O
which	O
provides	O
an	O
interface	B-Application
between	O
the	O
client	O
and	O
the	O
user	O
application	O
and	O
there	O
are	O
clients	O
handling	O
the	O
special	O
archive	O
formats	O
.	O
</s>
<s>
The	O
XAD	B-Application
subsystem	O
was	O
officially	O
included	O
in	O
AmigaOS	B-Application
3.9	O
along	O
with	O
a	O
simple	O
ReAction	O
GUI-based	O
tool	O
for	O
unarchiving	O
supported	O
file	O
archives	O
.	O
</s>
<s>
It	O
is	O
also	O
part	O
of	O
MorphOS	B-Operating_System
since	O
version	O
2.0	O
.	O
</s>
<s>
The	O
Mac	O
OS	O
X	O
frontend	O
is	O
called	O
The	B-Application
Unarchiver	I-Application
and	O
written	O
in	O
Objective-C	B-Language
.	O
</s>
