<s>
Google	B-Operating_System
Notebook	I-Operating_System
was	O
a	O
free	O
online	B-Application
application	I-Application
offered	O
by	O
Google	B-Application
that	O
allowed	O
users	O
to	O
save	O
and	O
organize	O
clips	O
of	O
information	O
while	O
conducting	O
research	O
online	O
.	O
</s>
<s>
The	O
browser-based	B-Application
tool	O
permitted	O
a	O
user	O
to	O
write	O
notes	O
,	O
clip	O
text	O
and	O
images	O
,	O
and	O
save	O
links	O
from	O
pages	O
during	O
a	O
browser	O
session	O
.	O
</s>
<s>
A	O
few	O
months	O
after	O
the	O
Firefox	O
extension	O
was	O
released	O
,	O
Google	B-Application
added	O
a	O
"	O
Note	O
this	O
"	O
link	O
to	O
each	O
Google	B-Application
search	O
result	O
when	O
users	O
are	O
logged	O
in	O
.	O
</s>
<s>
Clicking	O
on	O
it	O
opened	O
up	O
an	O
AJAX	B-Device
user	O
interface	O
near	O
the	O
bottom	O
right	O
of	O
the	O
screen	O
just	O
like	O
the	O
extension	O
,	O
but	O
without	O
the	O
need	O
for	O
installing	O
a	O
browser	O
add-on	O
.	O
</s>
<s>
It	O
was	O
also	O
possible	O
to	O
export	O
one	O
's	O
notebooks	O
to	O
Google	B-Application
Documents	I-Application
.	O
</s>
<s>
Google	B-Operating_System
Notebook	I-Operating_System
was	O
announced	O
on	O
May	O
10	O
,	O
2006	O
,	O
and	O
was	O
online	O
for	O
users	O
on	O
May	O
15	O
,	O
2006	O
.	O
</s>
<s>
On	O
January	O
14	O
,	O
2009	O
,	O
Google	B-Application
announced	O
that	O
they	O
were	O
stopping	O
development	O
on	O
the	O
service	O
.	O
</s>
<s>
However	O
,	O
Google	B-Operating_System
Notebook	I-Operating_System
users	O
could	O
continue	O
to	O
use	O
the	O
service	O
.	O
</s>
<s>
Almost	O
immediately	O
,	O
Evernote	B-Application
launched	O
a	O
Google	B-Operating_System
notebook	I-Operating_System
importer	O
on	O
January	O
22	O
,	O
2009	O
.	O
</s>
<s>
In	O
September	O
2011	O
,	O
Google	B-Application
announced	O
it	O
would	O
discontinue	O
a	O
number	O
of	O
its	O
products	O
,	O
including	O
Google	B-Operating_System
Notebook	I-Operating_System
through	O
their	O
''	O
second	O
spring	O
cleanup''	O
.	O
</s>
<s>
On	O
November	O
11	O
,	O
2011	O
,	O
Google	B-Application
began	O
exporting	O
the	O
contents	O
of	O
existing	O
Notebooks	O
to	O
Google	B-Application
Docs	I-Application
,	O
and	O
made	O
Google	B-Operating_System
Notebooks	I-Operating_System
read-only	O
.	O
</s>
<s>
,	O
all	O
Notebook	O
data	O
had	O
been	O
exported	O
to	O
Google	B-Application
Drive	I-Application
and	O
Google	B-Operating_System
Notebook	I-Operating_System
was	O
shut	O
down	O
.	O
</s>
<s>
On	O
March	O
20	O
,	O
2013	O
,	O
Google	B-Application
launched	O
its	O
new	O
note-taking	O
application	O
Google	B-Application
Keep	I-Application
.	O
</s>
