<s>
Bridge	B-Application
Base	I-Application
Online	I-Application
(	O
BBO	O
)	O
is	O
the	O
world	O
's	O
largest	O
bridge-playing	O
online	O
platform	O
,	O
with	O
about	O
10	O
million	O
monthly	O
visits	O
,	O
as	O
of	O
November	O
2021	O
.	O
</s>
<s>
Originally	O
created	O
by	O
professional	O
bridge	O
player	O
Fred	O
Gitelman	O
,	O
BBO	O
was	O
first	O
published	O
by	O
Bridge	B-Application
Base	I-Application
,	I-Application
Inc	I-Application
.	I-Application
in	O
2001	O
,	O
as	O
a	O
Windows	O
downloadable	O
software	O
,	O
offering	O
free	O
online	O
multiplayer	O
bridge	O
rooms	O
for	O
practice	O
and	O
play	O
.	O
</s>
<s>
Around	O
2008	O
,	O
BBO	O
was	O
ported	O
to	O
a	O
web	B-Application
application	I-Application
to	O
also	O
support	O
Linux	B-Application
and	O
macOS	B-Application
users	O
,	O
as	O
well	O
as	O
mobile	O
devices	O
.	O
</s>
<s>
In	O
2018	O
,	O
Bridge	B-Application
Base	I-Application
Online	I-Application
was	O
inducted	O
to	O
the	O
American	O
Contract	O
Bridge	O
League	O
's	O
Hall	O
of	O
Fame	O
,	O
for	O
its	O
long-term	O
commitment	O
to	O
bridge	O
.	O
</s>
<s>
Bridge	B-Application
Base	I-Application
Online	I-Application
also	O
features	O
free	O
tools	O
that	O
help	O
novice	O
players	O
learn	O
and	O
improve	O
their	O
game	O
skills	O
,	O
like	O
'	O
Bridge	O
Master	O
 '	O
and	O
'	O
Minibridge	O
 '	O
.	O
</s>
<s>
GIB	O
is	O
an	O
Artificial	B-Application
intelligence	I-Application
bridge	O
player	O
.	O
</s>
<s>
In	O
partnership	O
with	O
the	O
American	O
Contract	O
Bridge	O
League	O
(	O
ACBL	O
)	O
,	O
Bridge	B-Application
Base	I-Application
Online	I-Application
sponsors	O
ACBL-sanctioned	O
tournaments	O
on	O
its	O
website	O
.	O
</s>
