<s>
Buildbot	B-Application
is	O
a	O
software	O
development	O
continuous	O
integration	O
tool	O
which	O
automates	O
the	O
compile	B-Language
or	O
test	O
cycle	O
required	O
to	O
validate	O
changes	O
to	O
the	O
project	O
code	B-General_Concept
base	I-General_Concept
.	O
</s>
<s>
It	O
began	O
as	O
a	O
light-weight	O
alternative	O
to	O
the	O
Mozilla	B-Operating_System
project	I-Operating_System
's	O
Tinderbox	O
,	O
and	O
is	O
now	O
used	O
by	O
Python	B-Language
,	O
WebKit	B-Language
,	O
LLVM	B-Application
,	O
Blender	B-Application
,	O
ReactOS	B-Application
,	O
and	O
many	O
other	O
projects	O
.	O
</s>
<s>
Buildbot	B-Application
is	O
written	O
in	O
Python	B-Language
on	O
top	O
of	O
the	O
Twisted	B-Language
libraries	O
.	O
</s>
<s>
,	O
in	O
version	O
2.10.1	O
,	O
Buildbot	B-Application
supports	O
SCM	O
integration	O
with	O
CVS	B-Application
,	O
Subversion	B-Application
,	O
Darcs	B-Protocol
,	O
Mercurial	B-Protocol
,	O
Bazaar	B-Protocol
,	O
Git	B-Application
,	O
Monotone	B-Application
,	O
Repo/Gerrit	B-Language
,	O
Perforce	B-General_Concept
,	O
and	O
BitKeeper	B-Protocol
.	O
</s>
