<s>
Sugar	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
desktop	B-Application
environment	O
designed	O
for	O
interactive	O
learning	O
by	O
children	O
.	O
</s>
<s>
Developed	O
as	O
part	O
of	O
the	O
One	O
Laptop	O
per	O
Child	O
(	O
OLPC	O
)	O
project	O
,	O
Sugar	O
was	O
the	O
default	O
interface	O
on	O
OLPC	B-Application
XO-1	I-Application
laptop	O
computers	O
.	O
</s>
<s>
Sugar	O
is	O
available	O
as	O
a	O
Live	O
CD	O
,	O
as	O
Live	O
USB	O
,	O
and	O
a	O
package	O
installable	O
through	O
several	O
Linux	B-Application
distributions	I-Application
.	O
</s>
<s>
Unlike	O
most	O
other	O
desktop	B-Application
environments	O
,	O
Sugar	O
does	O
not	O
use	O
the	O
"	O
desktop	B-Application
"	O
,	O
"	O
folder	O
"	O
and	O
"	O
window	O
"	O
metaphors	O
.	O
</s>
<s>
Sugar	O
is	O
written	O
in	O
Python	B-Language
,	O
an	O
interpreted	B-Application
language	I-Application
,	O
and	O
can	O
be	O
modified	O
by	O
users	O
with	O
programming	O
experience	O
.	O
</s>
<s>
Desktop	B-Application
environments	O
used	O
by	O
many	O
operating	O
systems	O
are	O
written	O
in	O
compiled	B-Language
languages	I-Language
such	O
as	O
C	B-Language
.	O
</s>
<s>
By	O
early	O
2007	O
Sugar	O
could	O
be	O
installed	O
,	O
with	O
some	O
difficulty	O
,	O
on	O
several	O
Linux	B-Application
distributions	I-Application
,	O
and	O
in	O
virtual	O
machines	O
on	O
other	O
operating	O
systems	O
.	O
</s>
<s>
By	O
mid-2008	O
Sugar	O
was	O
available	O
on	O
the	O
Debian	O
,	O
Ubuntu	B-Operating_System
,	O
and	O
Fedora	O
distributions	O
of	O
Linux	B-Application
;	O
e.g.	O
,	O
as	O
of	O
Ubuntu	B-Operating_System
8.04	O
(	O
Hardy	O
Heron	O
)	O
,	O
Sugar	O
could	O
be	O
installed	O
from	O
the	O
official	O
Ubuntu	B-Operating_System
universe	O
repositories	O
.	O
</s>
<s>
By	O
mid-2009	O
Sugar	O
was	O
also	O
available	O
on	O
openSUSE	B-Operating_System
and	O
other	O
Linux	B-Application
distributions	I-Application
.	O
</s>
<s>
Sugar	O
0.82.1	O
was	O
included	O
in	O
the	O
OLPC	O
system	O
software	O
release	O
8.2.0	O
for	O
XO-1	B-Application
laptops	I-Application
.	O
</s>
<s>
There	O
were	O
three	O
releases	O
in	O
2011	O
and	O
one	O
in	O
June	O
2012	O
,	O
which	O
included	O
support	O
for	O
the	O
ARM	B-Architecture
architecture	I-Architecture
on	O
the	O
XO	B-Application
1.75	O
.	O
</s>
<s>
Builds	O
for	O
OLPC	B-Application
XO	I-Application
laptops	O
and	O
the	O
release	O
schedule	O
are	O
available	O
at	O
OS	O
releases	O
.	O
</s>
<s>
Sugar	O
has	O
been	O
ported	O
to	O
run	O
on	O
Android	B-Application
,	O
Firefox	B-Operating_System
OS	I-Operating_System
and	O
iOS	B-Application
using	O
HTML5	B-Application
and	O
JavaScript	B-Language
under	O
the	O
project	O
name	O
"	O
Sugarizer	O
"	O
;	O
with	O
additional	O
clients	O
written	O
for	O
Web	O
browsers	O
supporting	O
HTML5	B-Application
.	O
</s>
<s>
The	O
Sugar	O
learning	O
platform	O
for	O
Linux	B-Application
is	O
available	O
as	O
a	O
USB-bootable	O
Linux	B-Application
distribution	I-Application
(	O
"	O
Sugar	O
on	O
a	O
Stick	O
"	O
also	O
known	O
as	O
"	O
SoaS	O
"	O
)	O
and	O
as	O
software	O
components	O
forming	O
an	O
installable	O
additional	O
desktop	B-Application
environment	O
for	O
most	O
Linux	B-Application
distributions	I-Application
.	O
</s>
<s>
It	O
can	O
be	O
installed	O
using	O
the	O
Fedora	B-Application
Live	I-Application
USB	I-Application
Creator	I-Application
,	O
and	O
can	O
be	O
installed	O
onto	O
a	O
computer	O
hard	O
disk	O
using	O
the	O
liveinst	O
command	O
from	O
a	O
Sugar	O
Terminal	O
or	O
console	O
.	O
</s>
<s>
The	O
OLPC	B-Application
XO-1	I-Application
has	O
a	O
1	O
GB	O
NAND	O
flash	O
drive	O
and	O
256	O
MB	O
of	O
memory	O
.	O
</s>
<s>
Sugar	O
has	O
had	O
many	O
XO	B-Application
releases	O
.	O
</s>
<s>
Sugar	O
is	O
available	O
preinstalled	O
on	O
several	O
Linux	B-Application
operating	I-Application
systems	I-Application
and	O
among	O
the	O
most	O
notable	O
ones	O
:	O
</s>
<s>
An	O
official	O
edition	O
of	O
Trisquel	O
GNU/Linux	B-Application
with	O
Sugar	O
.	O
</s>
<s>
Sugarizer	O
is	O
an	O
HTML	B-Language
and	O
JavaScript	B-Language
based	O
application	O
that	O
allows	O
for	O
using	O
Sugar	O
functionality	O
on	O
any	O
device	O
.	O
</s>
<s>
It	O
is	O
available	O
as	O
both	O
a	O
web	B-Application
application	I-Application
and	O
a	O
mobile	B-Application
app	I-Application
.	O
</s>
