<s>
X.desktop	B-Application
was	O
an	O
early	O
desktop	O
environment	O
graphical	B-Application
user	I-Application
interface	I-Application
built	O
on	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
.	O
</s>
<s>
Versions	O
of	O
X.desktop	B-Application
were	O
available	O
for	O
over	O
30	O
different	O
UNIX	B-Application
operating	I-Application
system	I-Application
platforms	O
and	O
it	O
was	O
licensed	O
to	O
various	O
vendors	O
,	O
including	O
IBM	O
,	O
Compaq	O
,	O
Locus	O
Computing	O
Corporation	O
,	O
BiiN	O
and	O
Acorn	O
Computers	O
,	O
the	O
latter	O
licensing	O
it	O
in	O
1988	O
for	O
its	O
future	O
workstation	O
products	O
.	O
</s>
<s>
The	O
"	O
very	O
first	O
version	O
"	O
of	O
X.desktop	B-Application
used	O
Xlib	B-Language
,	O
whereas	O
version	O
1.3	O
(	O
being	O
the	O
"	O
first	O
version	O
seen	O
by	O
end	O
users	O
"	O
)	O
used	O
the	O
Athena	B-Library
widget	I-Library
set	I-Library
.	O
</s>
<s>
From	O
version	O
2.0	O
(	O
"	O
the	O
third	O
major	O
version	O
"	O
)	O
and	O
onwards	O
,	O
the	O
product	O
was	O
based	O
on	O
the	O
Motif	B-Application
toolkit	I-Application
.	O
</s>
<s>
This	O
contrasted	O
with	O
one	O
rival	O
,	O
Visix	O
Software	O
's	O
Looking	O
Glass	O
,	O
which	O
continued	O
to	O
use	O
its	O
own	O
proprietary	O
graphical	B-Application
user	I-Application
interface	I-Application
toolkit	O
instead	O
of	O
adopting	O
Motif	B-Application
.	O
</s>
<s>
X.desktop	B-Application
provided	O
a	O
user	O
interface	O
reminiscent	O
of	O
the	O
Macintosh	B-Application
Finder	I-Application
,	O
with	O
the	O
screen	O
representing	O
a	O
desktop	O
and	O
with	O
windows	O
showing	O
the	O
contents	O
of	O
folders	O
(	O
or	O
directories	O
)	O
in	O
the	O
filesystem	O
.	O
</s>
<s>
X.desktop	B-Application
was	O
described	O
as	O
working	O
"	O
the	O
way	O
you	O
'd	O
expect	O
a	O
Unix/X	O
application	O
to	O
work	O
"	O
,	O
seeking	O
to	O
represent	O
the	O
contents	O
of	O
the	O
filesystem	O
accurately	O
.	O
</s>
