<s>
OutWit	B-Operating_System
Hub	I-Operating_System
is	O
a	O
Web	B-Application
data	I-Application
extraction	I-Application
software	O
application	O
designed	O
to	O
automatically	O
extract	O
information	O
from	O
online	O
or	O
local	O
resources	O
.	O
</s>
<s>
It	O
recognizes	O
and	O
grabs	O
links	O
,	O
images	O
,	O
documents	O
,	O
contacts	O
,	O
recurring	O
vocabulary	O
and	O
phrases	O
,	O
rss	O
feeds	O
and	O
converts	O
structured	O
and	O
unstructured	O
data	O
into	O
formatted	O
tables	O
which	O
can	O
be	O
exported	O
to	O
spreadsheets	B-Application
or	O
databases	O
.	O
</s>
<s>
Regular	B-Language
expressions	I-Language
can	O
be	O
included	O
in	O
scrapers	O
as	O
well	O
as	O
in	O
other	O
parts	O
of	O
the	O
application	O
to	O
define	O
variable	O
recognition	O
markers	O
.	O
</s>
<s>
Although	O
OutWit	B-Operating_System
Hub	I-Operating_System
is	O
presented	O
as	O
a	O
tool	O
for	O
non-technical	O
users	O
,	O
the	O
fact	O
that	O
the	O
application	O
does	O
n't	O
use	O
the	O
document	B-General_Concept
object	I-General_Concept
model	I-General_Concept
structure	O
for	O
its	O
extractions	O
prevents	O
visual	O
"	O
point	O
&	O
grab	O
"	O
data	O
scraping	O
and	O
forces	O
the	O
user	O
who	O
wants	O
to	O
create	O
custom	O
scrapers	O
to	O
define	O
markers	O
in	O
the	O
source	O
code	O
of	O
the	O
page	O
.	O
</s>
<s>
The	O
advantage	O
of	O
this	O
approach	O
,	O
however	O
,	O
is	O
that	O
it	O
allows	O
a	O
more	O
precise	O
definition	O
of	O
extraction	O
masks	O
than	O
HTML	O
nodes	O
and	O
faster	O
execution	O
,	O
as	O
the	O
document	B-General_Concept
object	I-General_Concept
model	I-General_Concept
tree	O
does	O
n't	O
need	O
to	O
be	O
rendered	O
by	O
the	O
browser	O
at	O
extraction	O
time	O
.	O
</s>
<s>
OutWit	B-Operating_System
Hub	I-Operating_System
is	O
a	O
discontinued	O
Firefox	O
extension	O
.	O
</s>
