<s>
Review	B-Language
Board	I-Language
is	O
a	O
web-based	O
collaborative	O
code	B-General_Concept
review	I-General_Concept
tool	I-General_Concept
,	O
available	O
as	O
free	B-Application
software	I-Application
under	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
An	O
alternative	O
to	O
Rietveld	B-Language
and	O
Gerrit	B-Language
,	O
Review	B-Language
Board	I-Language
integrates	O
with	O
Bazaar	B-Protocol
,	O
ClearCase	B-Protocol
,	O
CVS	B-Application
,	O
Git	B-Application
,	O
Mercurial	B-Protocol
,	O
Perforce	B-General_Concept
,	O
and	O
Subversion	B-Application
.	O
</s>
<s>
Review	B-Language
Board	I-Language
can	O
be	O
installed	O
on	O
any	O
server	O
running	O
Apache	B-Application
or	O
lighttpd	B-Protocol
and	O
is	O
free	O
for	O
both	O
personal	O
and	O
commercial	O
use	O
.	O
</s>
<s>
There	O
is	O
also	O
an	O
official	O
commercial	O
Review	B-Language
Board	I-Language
hosting	O
service	O
,	O
.	O
</s>
<s>
Some	O
of	O
the	O
notable	O
users	O
of	O
Review	B-Language
Board	I-Language
are	O
:	O
</s>
