<s>
SpaceSniffer	B-Application
is	O
a	O
freeware	B-License
computer	O
disk	B-Application
space	I-Application
analyser	I-Application
from	O
Uderzo	O
Software	O
for	O
Microsoft	B-Application
Windows	I-Application
platforms	O
.	O
</s>
<s>
It	O
uses	O
a	O
treemap	B-Application
to	O
visualise	O
disk	O
usage	O
.	O
</s>
<s>
Developed	O
by	O
Uderzo	O
Software	O
(	O
run	O
by	O
Umberto	O
Uderzo	O
)	O
in	O
Italy	O
,	O
SpaceSniffer	B-Application
was	O
first	O
released	O
in	O
2009	O
.	O
</s>
<s>
SpaceSniffer	B-Application
comes	O
in	O
a	O
single	O
edition	O
that	O
runs	O
on	O
the	O
Windows	O
operating	O
platform	O
(	O
from	O
Windows	B-Application
2000	I-Application
)	O
.	O
</s>
<s>
A	O
treemap	B-Application
represents	O
how	O
disk	O
capacity	O
is	O
allocated	O
.	O
</s>
<s>
NTFS	O
Alternate	B-Application
Data	I-Application
Streams	I-Application
are	O
supported	O
.	O
</s>
<s>
Reviewers	O
and	O
users	O
have	O
noted	O
that	O
the	O
treemap	B-Application
presentation	O
“	O
can	O
be	O
a	O
bit	O
overwhelming	O
at	O
times	O
”	O
or	O
“	O
cluttered	O
and	O
more	O
complex	O
than	O
necessary	O
”	O
but	O
concluded	O
that	O
it	O
was	O
“	O
effective	O
”	O
.	O
</s>
