<s>
Cloud9	B-Application
IDE	I-Application
is	O
an	O
Online	B-Application
IDE	I-Application
(	O
integrated	B-Application
development	I-Application
environment	I-Application
)	O
,	O
published	O
as	O
open	B-Application
source	I-Application
from	O
version	O
2.0	O
,	O
until	O
version	O
3.0	O
.	O
</s>
<s>
It	O
supports	O
multiple	O
programming	O
languages	O
,	O
including	O
C	B-Language
,	O
C++	B-Language
,	O
PHP	B-Application
,	O
Ruby	B-Language
,	O
Perl	B-Language
,	O
Python	B-Language
,	O
JavaScript	B-Language
with	O
Node.js	B-Language
,	O
and	O
Go	B-Application
.	O
</s>
<s>
It	O
is	O
written	O
almost	O
entirely	O
in	O
JavaScript	B-Language
,	O
and	O
uses	O
Node.js	B-Language
on	O
the	O
back-end	O
.	O
</s>
<s>
The	O
editor	O
component	O
uses	O
Ace	B-Language
.	O
</s>
<s>
Cloud9	O
was	O
acquired	O
by	O
Amazon	O
in	O
July	O
2016	O
and	O
became	O
a	O
part	O
of	O
Amazon	B-Application
Web	I-Application
Services	I-Application
(	O
AWS	B-Application
)	O
.	O
</s>
<s>
New	O
users	O
may	O
only	O
use	O
the	O
Cloud9	O
service	O
through	O
an	O
AWS	B-Application
account	O
.	O
</s>
<s>
Cloud9	B-Application
IDE	I-Application
also	O
offered	O
syntax	O
highlighting	O
for	O
various	O
languages	O
,	O
such	O
as	O
C#	B-Application
,	O
C/C	O
++	O
,	O
Java	B-Language
,	O
JavaScript	B-Language
,	O
Python	B-Language
,	O
and	O
Ruby	B-Language
.	O
</s>
<s>
Particularly	O
for	O
JavaScript	B-Language
,	O
it	O
offered	O
real-time	O
language	O
analysis	O
,	O
code	O
reformatting	O
,	O
and	O
refactoring	O
facilities	O
.	O
</s>
<s>
As	O
an	O
online	B-Application
IDE	I-Application
,	O
it	O
allowed	O
simultaneous	B-Application
editing	I-Application
from	O
multiple	O
users	O
by	O
offering	O
multiple	O
cursors	O
,	O
and	O
could	O
support	O
the	O
creation	O
of	O
private	O
and	O
public	O
projects	O
.	O
</s>
<s>
Projects	O
could	O
also	O
be	O
integration	O
with	O
Mercurial	B-Protocol
and	O
Git	B-Application
repositories	O
,	O
as	O
well	O
as	O
collaboration	O
platforms	O
like	O
GitHub	B-Application
and	O
Bitbucket	B-Protocol
.	O
</s>
<s>
Founded	O
in	O
2010	O
,	O
and	O
based	O
in	O
San	O
Francisco	O
and	O
Amsterdam	O
,	O
Cloud9	B-Application
IDE	I-Application
was	O
a	O
privately	O
held	O
company	O
.	O
</s>
<s>
Cloud9	B-Application
IDE	I-Application
raised	O
$5.5	O
million	O
in	O
Series	O
A	O
funding	O
from	O
Accel	O
Partners	O
and	O
product	O
development	O
software	O
company	O
Atlassian	O
Software	O
.	O
</s>
<s>
Cloud9	O
is	O
the	O
native	O
IDE	B-Application
for	O
the	O
BeagleBone	O
Black	O
single-board	B-Device
computer	I-Device
,	O
which	O
is	O
primarily	O
programmed	O
in	O
an	O
extension	O
of	O
node.js	B-Language
called	O
Bonescript	O
.	O
</s>
