<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Pipes	B-Operating_System
was	O
a	O
web	B-Application
application	I-Application
from	O
Yahoo	B-Application
!	I-Application
</s>
<s>
that	O
provided	O
a	O
graphical	O
user	O
interface	O
for	O
building	O
data	O
mashups	B-Application
that	O
aggregate	O
web	B-General_Concept
feeds	I-General_Concept
,	O
web	O
pages	O
,	O
and	O
other	O
services	O
;	O
creating	O
Web-based	B-Application
apps	O
from	O
various	O
sources	O
;	O
and	O
publishing	O
those	O
apps	O
.	O
</s>
<s>
The	O
documentation	O
page	O
contained	O
information	O
about	O
pipes	B-Operating_System
including	O
guides	O
for	O
the	O
pipe	O
editor	O
and	O
troubleshooting	O
.	O
</s>
<s>
The	O
discussion	O
page	O
enabled	O
users	O
to	O
discuss	O
the	O
pipes	B-Operating_System
with	O
other	O
users	O
.	O
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Pipes	B-Operating_System
was	O
released	O
to	O
the	O
public	O
in	O
beta	O
on	O
7	O
February	O
2007	O
.	O
</s>
<s>
It	O
was	O
built	O
by	O
Pasha	O
Sadri	O
,	O
Ed	O
Ho	O
,	O
Jonathan	O
Trevor	O
,	O
Ido	O
Green	O
,	O
and	O
Daniel	O
Raffel	O
of	O
Yahoo	B-Application
!	I-Application
</s>
<s>
On	O
4	O
June	O
2015	O
,	O
it	O
was	O
announced	O
that	O
Pipes	B-Operating_System
would	O
be	O
in	O
read-only	O
mode	O
from	O
30	O
August	O
2015	O
,	O
and	O
shut	O
down	O
on	O
30	O
September	O
2015	O
.	O
</s>
<s>
Yahoo	B-Application
did	O
not	O
offer	O
a	O
paid	O
version	O
,	O
but	O
instead	O
shut	O
down	O
the	O
program	O
entirely	O
.	O
</s>
<s>
The	O
purpose	O
of	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Pipes	B-Operating_System
was	O
to	O
create	O
new	O
pages	O
by	O
aggregating	O
RSS	O
feeds	O
from	O
different	O
sources	O
.	O
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Pipes	B-Operating_System
had	O
many	O
modules	O
which	O
could	O
be	O
used	O
either	O
to	O
grab	O
data	O
from	O
sources	O
or	O
to	O
edit	O
the	O
data	O
that	O
was	O
grabbed	O
from	O
the	O
sources	O
.	O
</s>
<s>
To	O
create	O
or	O
edit	O
a	O
pipe	O
,	O
the	O
user	O
had	O
to	O
sign	O
up	O
with	O
a	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Creation	O
and	O
editing	O
of	O
the	O
pipes	B-Operating_System
was	O
completely	O
online	O
;	O
</s>
<s>
The	O
canvas	O
was	O
the	O
main	O
pane	O
where	O
the	O
editing	O
of	O
pipes	B-Operating_System
was	O
done	O
.	O
</s>
