<s>
Firefox	B-Operating_System
OS	I-Operating_System
(	O
project	O
name	O
:	O
Boot	B-Operating_System
to	I-Operating_System
Gecko	I-Operating_System
,	O
also	O
known	O
as	O
B2G	O
)	O
is	O
a	O
discontinued	O
open-source	B-Application
operating	B-General_Concept
system	I-General_Concept
made	O
for	O
smartphones	B-Application
,	O
tablet	B-Device
computers	I-Device
,	O
smart	B-Device
TVs	I-Device
,	O
and	O
dongles	B-Device
designed	O
by	O
Mozilla	B-Operating_System
and	O
external	O
contributors	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
rendering	O
engine	O
of	O
the	O
Firefox	B-Application
web	I-Application
browser	I-Application
,	O
Gecko	B-Language
,	O
and	O
on	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
.	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
was	O
designed	O
to	O
provide	O
a	O
complete	O
,	O
community-based	O
alternative	O
operating	B-General_Concept
system	I-General_Concept
,	O
for	O
running	O
web	B-Application
applications	I-Application
directly	O
or	O
those	O
installed	O
from	O
an	O
application	O
marketplace	O
.	O
</s>
<s>
The	O
applications	O
use	O
open	O
standards	O
and	O
approaches	O
such	O
as	O
JavaScript	B-Language
and	O
HTML5	B-Application
,	O
a	O
robust	O
privilege	O
model	O
,	O
and	O
open	O
web	B-General_Concept
APIs	I-General_Concept
that	O
can	O
communicate	O
directly	O
with	O
hardware	O
,	O
e.g.	O
</s>
<s>
As	O
such	O
,	O
Mozilla	B-Operating_System
with	O
Firefox	B-Operating_System
OS	I-Operating_System
competed	O
with	O
commercially	O
developed	O
operating	B-General_Concept
systems	I-General_Concept
such	O
as	O
Apple	O
's	O
iOS	B-Application
,	O
Google	B-Application
's	I-Application
Android	I-Application
,	O
Microsoft	O
's	O
Windows	B-Protocol
Phone	I-Protocol
,	O
BlackBerry	O
's	O
BlackBerry	B-Application
10	I-Application
,	O
Samsung's/Linux	O
Foundation	O
's	O
Tizen	B-Application
,	O
and	O
Jolla	B-Operating_System
's	O
Sailfish	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
In	O
December	O
2015	O
,	O
Mozilla	B-Operating_System
announced	O
it	O
would	O
stop	O
development	O
of	O
new	O
Firefox	B-Operating_System
OS	I-Operating_System
smartphones	B-Application
and	O
,	O
in	O
September	O
2016	O
,	O
announced	O
the	O
end	O
of	O
development	O
.	O
</s>
<s>
Successors	O
to	O
Firefox	B-Operating_System
OS	I-Operating_System
include	O
the	O
discontinued	O
B2G	O
OS	O
and	O
Acadine	O
Technologies	O
 '	O
H5OS	O
as	O
well	O
as	O
KaiOS	B-Device
Technologies	O
 '	O
KaiOS	B-Device
and	O
Panasonic	O
's	O
My	O
Home	O
Screen	O
.	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
was	O
publicly	O
demonstrated	O
in	O
February	O
2012	O
,	O
on	O
Android-compatible	O
smartphones	B-Application
.	O
</s>
<s>
By	O
December	O
16	O
,	O
2014	O
,	O
fourteen	O
operators	O
in	O
28	O
countries	O
throughout	O
the	O
world	O
offered	O
Firefox	B-Operating_System
OS	I-Operating_System
phones	O
.	O
</s>
<s>
On	O
December	O
8	O
,	O
2015	O
,	O
Mozilla	B-Operating_System
announced	O
that	O
it	O
would	O
stop	O
sales	O
of	O
Firefox	B-Operating_System
OS	I-Operating_System
smartphones	B-Application
through	O
carriers	O
.	O
</s>
<s>
Mozilla	B-Operating_System
later	O
announced	O
that	O
Firefox	B-Operating_System
OS	I-Operating_System
smartphones	B-Application
would	O
be	O
discontinued	O
by	O
May	O
2016	O
,	O
as	O
the	O
development	O
of	O
"	O
Firefox	B-Operating_System
OS	I-Operating_System
for	O
smartphones	B-Application
"	O
would	O
cease	O
after	O
the	O
release	O
of	O
version	O
2.6	O
.	O
</s>
<s>
Around	O
the	O
same	O
time	O
,	O
it	O
was	O
reported	O
that	O
Acadine	O
Technologies	O
,	O
a	O
startup	O
founded	O
by	O
Li	O
Gong	O
(	O
former	O
president	O
of	O
Mozilla	B-Operating_System
Corporation	O
)	O
with	O
various	O
other	O
former	O
Mozilla	B-Operating_System
staff	O
among	O
its	O
employees	O
,	O
would	O
take	O
over	O
the	O
mission	O
of	O
developing	O
carrier	O
partnerships	O
,	O
for	O
its	O
own	O
Firefox	B-Operating_System
OS	I-Operating_System
derivative	O
H5OS	O
.	O
</s>
<s>
In	O
January	O
2016	O
,	O
Mozilla	B-Operating_System
announced	O
that	O
Firefox	B-Operating_System
OS	I-Operating_System
would	O
power	O
Panasonic	O
's	O
UHD	B-Device
TVs	I-Device
(	O
as	O
previously	O
announced	O
Firefox	B-Operating_System
OS	I-Operating_System
"	O
would	O
pivot	O
to	O
connected	O
devices	O
"	O
)	O
.	O
</s>
<s>
In	O
September	O
2016	O
,	O
Mozilla	B-Operating_System
announced	O
that	O
work	O
on	O
Firefox	B-Operating_System
OS	I-Operating_System
had	O
ceased	O
,	O
and	O
that	O
all	O
B2G-related	O
code	O
would	O
be	O
removed	O
from	O
mozilla-central	O
.	O
</s>
<s>
On	O
July	O
25	O
,	O
2011	O
,	O
Andreas	O
Gal	O
,	O
Director	O
of	O
Research	O
at	O
Mozilla	B-Operating_System
Corporation	O
,	O
announced	O
the	O
"	O
Boot	B-Operating_System
to	I-Operating_System
Gecko	I-Operating_System
"	O
Project	O
(	O
B2G	O
)	O
on	O
the	O
mozilla.dev.platform	O
mailing	O
list	O
.	O
</s>
<s>
The	O
project	O
proposal	O
was	O
to	O
"	O
pursue	O
the	O
goal	O
of	O
building	O
a	O
complete	O
,	O
standalone	O
operating	B-General_Concept
system	I-General_Concept
for	O
the	O
open	O
web	O
"	O
in	O
order	O
to	O
"	O
find	O
the	O
gaps	O
that	O
keep	O
web	O
developers	O
from	O
being	O
able	O
to	O
build	O
apps	O
that	O
are	O
in	O
every	O
way	O
the	O
equals	O
of	O
native	O
apps	O
built	O
for	O
the	O
iPhone	O
,	O
Android	B-Application
,	O
and	O
Windows	B-Protocol
Phone	I-Protocol
7.	O
"	O
</s>
<s>
The	O
announcement	O
identified	O
these	O
work	O
areas	O
:	O
new	O
web	B-General_Concept
APIs	I-General_Concept
to	O
expose	O
device	O
and	O
OS	O
capabilities	O
such	O
as	O
telephone	O
and	O
camera	O
,	O
a	O
privilege	O
model	O
to	O
safely	O
expose	O
these	O
to	O
web	O
pages	O
,	O
applications	O
to	O
prove	O
these	O
capabilities	O
,	O
and	O
low-level	O
code	O
to	O
boot	B-Operating_System
on	O
an	O
Android-compatible	O
device	O
.	O
</s>
<s>
According	O
to	O
Ars	O
Technica	O
,	O
"	O
Mozilla	B-Operating_System
says	O
that	O
B2G	O
is	O
motivated	O
by	O
a	O
desire	O
to	O
demonstrate	O
that	O
the	O
standards-based	O
open	O
Web	O
has	O
the	O
potential	O
to	O
be	O
a	O
competitive	O
alternative	O
to	O
the	O
existing	O
single-vendor	O
application	O
development	O
stacks	O
offered	O
by	O
the	O
dominant	O
mobile	O
operating	O
systems.	O
"	O
</s>
<s>
In	O
2012	O
,	O
Andreas	O
Gal	O
expanded	O
on	O
Mozilla	B-Operating_System
's	O
aims	O
.	O
</s>
<s>
He	O
characterized	O
the	O
current	O
set	O
of	O
mobile	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
as	O
"	O
walled	B-Application
gardens	I-Application
"	O
and	O
presented	O
Firefox	B-Operating_System
OS	I-Operating_System
as	O
more	O
accessible	O
:	O
"	O
We	O
use	O
completely	O
open	O
standards	O
and	O
there	O
’s	O
no	O
proprietary	B-Application
software	I-Application
or	O
technology	O
involved.	O
"	O
</s>
<s>
Gal	O
also	O
said	O
that	O
because	O
the	O
software	O
stack	O
is	O
entirely	O
HTML5	B-Application
,	O
there	O
are	O
already	O
a	O
large	O
number	O
of	O
established	O
developers	O
.	O
</s>
<s>
This	O
assumption	O
is	O
employed	O
in	O
Mozilla	B-Operating_System
's	O
WebAPI	B-General_Concept
.	O
</s>
<s>
These	O
are	O
intended	O
W3C	O
standards	O
that	O
attempt	O
to	O
bridge	O
the	O
capability	O
gap	O
that	O
currently	O
exists	O
between	O
native	O
frameworks	O
and	O
web	B-Application
applications	I-Application
.	O
</s>
<s>
The	O
goal	O
of	O
these	O
efforts	O
is	O
to	O
enable	O
developers	O
to	O
build	O
applications	O
using	O
WebAPI	B-General_Concept
which	O
would	O
then	O
run	O
in	O
any	O
standards	O
compliant	O
browser	O
without	O
the	O
need	O
to	O
rewrite	O
their	O
application	O
for	O
each	O
platform	O
.	O
</s>
<s>
In	O
July	O
2012	O
,	O
Boot	B-Operating_System
to	I-Operating_System
Gecko	I-Operating_System
was	O
rebranded	O
as	O
'	O
Firefox	B-Operating_System
OS	I-Operating_System
 '	O
,	O
after	O
Mozilla	B-Operating_System
's	O
well-known	O
desktop	B-Device
browser	O
,	O
Firefox	B-Application
,	O
and	O
screenshots	O
began	O
appearing	O
in	O
August	O
2012	O
.	O
</s>
<s>
In	O
September	O
2012	O
,	O
analysts	O
Strategy	O
Analysts	O
forecast	O
that	O
Firefox	B-Operating_System
OS	I-Operating_System
would	O
account	O
for	O
1%	O
of	O
the	O
global	O
smartphone	B-Application
market	O
in	O
2013	O
,	O
its	O
first	O
year	O
of	O
commercial	O
availability	O
.	O
</s>
<s>
In	O
February	O
2013	O
,	O
Mozilla	B-Operating_System
announced	O
plans	O
for	O
its	O
global	O
commercial	O
roll-out	O
of	O
Firefox	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
Mozilla	B-Operating_System
announced	O
at	O
a	O
press	O
conference	O
before	O
the	O
start	O
of	O
Mobile	O
World	O
Congress	O
in	O
Barcelona	O
that	O
the	O
first	O
wave	O
of	O
Firefox	B-Operating_System
OS	I-Operating_System
devices	O
would	O
be	O
available	O
to	O
consumers	O
in	O
Brazil	O
,	O
Colombia	O
,	O
Hungary	O
,	O
Mexico	O
,	O
Montenegro	O
,	O
Poland	O
,	O
Serbia	O
,	O
Spain	O
and	O
Venezuela	O
.	O
</s>
<s>
Mozilla	B-Operating_System
also	O
announced	O
that	O
LG	O
Electronics	O
,	O
ZTE	O
,	O
Huawei	O
and	O
TCL	O
Corporation	O
had	O
committed	O
to	O
making	O
Firefox	B-Operating_System
OS	I-Operating_System
devices	O
.	O
</s>
<s>
In	O
December	O
2013	O
,	O
new	O
features	O
were	O
added	O
with	O
the	O
1.2	O
release	O
,	O
including	O
conference	O
calling	O
,	O
silent	O
SMS	O
authentication	O
for	O
mobile	O
billing	O
,	O
improved	O
push	B-General_Concept
notifications	I-General_Concept
,	O
and	O
three	O
state	O
settings	O
for	O
Do	B-Protocol
Not	I-Protocol
Track	I-Protocol
.	O
</s>
<s>
Async	O
Pan	O
and	O
Zoom	O
(	O
APZ	O
)	O
,	O
included	O
in	O
version	O
1.3	O
,	O
should	O
improve	O
user	B-Application
interface	I-Application
responsiveness	O
.	O
</s>
<s>
Work	O
was	O
done	O
to	O
optimize	O
Firefox	B-Operating_System
OS	I-Operating_System
to	O
run	O
a	O
128MB	O
platform	O
with	O
version	O
1.3T	O
.	O
</s>
<s>
In	O
2015	O
,	O
Mozilla	B-Operating_System
ported	O
Firefox	B-Operating_System
OS	I-Operating_System
(	O
an	O
"	O
experimental	O
version	O
"	O
)	O
to	O
MIPS32	B-Device
to	O
work	O
in	O
a	O
sub-	O
$100	O
tablet	B-Device
(	O
that	O
can	O
also	O
run	O
Android	B-Application
4.4	O
KitKat	O
)	O
.	O
</s>
<s>
Mozilla	B-Operating_System
has	O
worked	O
on	O
developing	O
the	O
OS	O
for	O
Smart	O
Feature	O
Phones	O
.	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
was	O
discontinued	O
in	O
January	O
2017	O
.	O
</s>
<s>
In	O
2014	O
,	O
Gal	O
announced	O
a	O
change	O
in	O
course	O
,	O
writing	O
that	O
future	O
versions	O
of	O
the	O
Firefox	B-Application
browser	I-Application
would	O
include	O
DRM	O
.	O
</s>
<s>
Implementation	O
of	O
DRM	O
in	O
the	O
Firefox	B-Application
browser	I-Application
began	O
with	O
version	O
38	O
.	O
</s>
<s>
In	O
August	O
2015	O
,	O
attempts	O
by	O
Matchstick	B-Device
TV	I-Device
(	O
based	O
on	O
Firefox	B-Operating_System
OS	I-Operating_System
)	O
to	O
add	O
DRM	O
caused	O
the	O
demise	O
of	O
Matchstick	B-Device
,	O
a	O
decision	O
that	O
Boing	O
Boing	O
called	O
"	O
suicide-by-DRM	O
"	O
.	O
</s>
<s>
At	O
Mobile	O
World	O
Congress	O
2012	O
,	O
Mozilla	B-Operating_System
and	O
Telefónica	O
announced	O
that	O
the	O
Spanish	O
telecommunications	O
provider	O
intended	O
to	O
deliver	O
"	O
open	B-Operating_System
Web	I-Operating_System
devices	I-Operating_System
"	O
in	O
2012	O
,	O
based	O
on	O
HTML5	B-Application
and	O
these	O
APIs	B-General_Concept
.	O
</s>
<s>
Mozilla	B-Operating_System
also	O
announced	O
support	O
for	O
the	O
project	O
from	O
Adobe	O
and	O
Qualcomm	O
,	O
and	O
that	O
Deutsche	O
Telekom	O
’s	O
Innovation	O
Labs	O
would	O
join	O
the	O
project	O
.	O
</s>
<s>
Mozilla	B-Operating_System
demonstrated	O
a	O
"	O
sneak	O
preview	O
"	O
of	O
the	O
software	O
and	O
apps	O
running	O
on	O
Samsung	B-Application
Galaxy	I-Application
S	I-Application
II	I-Application
phones	O
(	O
replacing	O
their	O
usual	O
Android	B-Application
operating	I-Application
system	I-Application
)	O
.	O
</s>
<s>
In	O
August	O
2012	O
,	O
a	O
Nokia	O
employee	O
demonstrated	O
the	O
OS	O
running	O
on	O
a	O
Raspberry	B-Operating_System
Pi	I-Operating_System
.	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
is	O
compatible	O
with	O
a	O
number	O
of	O
devices	O
,	O
including	O
Otoro	O
,	O
PandaBoard	B-Architecture
,	O
Emulator	O
(	O
ARM	B-Architecture
and	O
x86	B-Operating_System
)	O
,	O
Desktop	B-Device
,	O
Nexus	B-Device
S	I-Device
,	O
Nexus	B-Device
S	I-Device
4G	I-Device
,	O
Samsung	B-Application
Galaxy	I-Application
S	I-Application
II	I-Application
,	O
Galaxy	B-Application
Nexus	I-Application
and	O
Nexus	B-Device
4	I-Device
.	O
</s>
<s>
A	O
MIPS	B-Device
port	O
was	O
created	O
by	O
Imagination	O
Technologies	O
in	O
March	O
2015	O
.	O
</s>
<s>
In	O
December	O
2012	O
,	O
Mozilla	B-Operating_System
rolled	O
out	O
another	O
update	O
and	O
released	O
Firefox	B-Operating_System
OS	I-Operating_System
Simulator	O
1.0	O
,	O
which	O
can	O
be	O
downloaded	O
as	O
an	O
add-on	O
for	O
Firefox	B-Application
.	O
</s>
<s>
The	O
latest	O
version	O
of	O
Firefox	B-Operating_System
OS	I-Operating_System
Simulator	O
,	O
version	O
4.0	O
,	O
was	O
released	O
on	O
July	O
3	O
,	O
2013	O
and	O
announced	O
on	O
July	O
11	O
,	O
2013	O
.	O
</s>
<s>
Mozilla	B-Operating_System
's	O
planned	O
US$25	O
Firefox	B-Application
smartphone	B-Application
displayed	O
at	O
MWC	O
,	O
is	O
built	O
by	O
Spreadtrum	O
.	O
</s>
<s>
Mozilla	B-Operating_System
has	O
collaborated	O
with	O
four	O
handset	O
makers	O
and	O
five	O
wireless	O
carriers	O
to	O
provide	O
five	O
Firefox-powered	O
smartphones	B-Application
in	O
Europe	O
and	O
Latin	O
America	O
so	O
far	O
with	O
cellphone	O
launches	O
being	O
led	O
by	O
UK	O
marketer	O
John	O
D	O
.	O
Bernard	O
.	O
</s>
<s>
In	O
India	O
,	O
Mozilla	B-Operating_System
planned	O
a	O
launching	O
at	O
$25	O
in	O
partnership	O
with	O
Intex	O
&	O
Spice	O
,	O
but	O
the	O
price	O
ended	O
up	O
being	O
$33	O
(	O
converted	O
from	O
1,999	O
Rupees	O
)	O
.	O
</s>
<s>
Gonk	O
consists	O
of	O
a	O
Linux	B-Operating_System
kernel	I-Operating_System
and	O
user-space	O
hardware	B-Operating_System
abstraction	I-Operating_System
layer	I-Operating_System
(	O
HAL	B-Operating_System
)	O
.	O
</s>
<s>
The	O
kernel	B-Operating_System
and	O
several	O
user-space	O
libraries	O
are	O
common	O
open-source	B-Application
projects	O
:	O
Linux	B-Operating_System
,	O
libusb	B-Language
,	O
BlueZ	O
,	O
etc	O
.	O
</s>
<s>
Some	O
other	O
parts	O
of	O
the	O
HAL	B-Operating_System
are	O
shared	O
with	O
the	O
Android	B-Application
project	O
:	O
GPS	O
,	O
camera	O
,	O
among	O
others	O
.	O
</s>
<s>
Gonk	O
is	O
basically	O
an	O
extremely	O
simple	O
Linux	B-Operating_System
distribution	O
and	O
is	O
therefore	O
from	O
Gecko	B-Language
's	O
perspective	O
,	O
simply	O
a	O
porting	O
target	O
of	O
Gecko	B-Language
;	O
there	O
is	O
a	O
port	O
of	O
Gecko	B-Language
to	O
Gonk	O
,	O
just	O
like	O
there	O
is	O
a	O
port	O
of	O
Gecko	B-Language
to	O
OS	O
X	O
,	O
and	O
a	O
port	O
of	O
Gecko	B-Language
to	O
Android	B-Application
.	O
</s>
<s>
However	O
,	O
since	O
the	O
development	O
team	O
have	O
full	O
control	O
over	O
Gonk	O
,	O
the	O
developers	O
can	O
fully	O
expose	O
all	O
the	O
features	O
and	O
interfaces	O
required	O
for	O
comprehensive	O
mobile	B-Operating_System
platforms	I-Operating_System
such	O
as	O
Gecko	B-Language
,	O
but	O
which	O
are	O
n't	O
currently	O
possible	O
to	O
access	O
on	O
other	O
mobile	O
OSes	O
.	O
</s>
<s>
For	O
example	O
,	O
using	O
Gonk	O
,	O
Gecko	B-Language
can	O
obtain	O
direct	O
access	O
to	O
the	O
full	O
telephone	O
stack	O
and	O
display	O
framebuffer	B-Algorithm
,	O
but	O
does	O
n't	O
have	O
this	O
access	O
on	O
any	O
other	O
OS	O
.	O
</s>
<s>
Gecko	B-Language
is	O
the	O
web	B-Protocol
browser	I-Protocol
engine	I-Protocol
of	O
Firefox	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
Gecko	B-Language
implements	O
open	O
standards	O
for	O
HTML	B-Language
,	O
CSS	B-Language
,	O
and	O
JavaScript	B-Language
.	O
</s>
<s>
Gecko	B-Language
includes	O
a	O
networking	O
stack	O
,	O
graphics	O
stack	O
,	O
layout	B-Protocol
engine	I-Protocol
,	O
virtual	O
machine	O
(	O
for	O
JavaScript	B-Language
)	O
,	O
and	O
porting	O
layers	O
.	O
</s>
<s>
Gaia	O
is	O
the	O
user	B-Application
interface	I-Application
of	O
Firefox	B-Operating_System
OS	I-Operating_System
and	O
controls	O
everything	O
drawn	O
to	O
the	O
screen	O
.	O
</s>
<s>
Gaia	O
includes	O
by	O
default	O
implementations	O
of	O
a	O
lock	O
screen	O
,	O
home	O
screen	O
,	O
telephone	O
dialer	O
and	O
contacts	O
application	O
,	O
text-messaging	O
application	O
,	O
camera	O
application	O
and	O
gallery	O
support	O
,	O
plus	O
the	O
classic	O
phone	B-Application
apps	I-Application
:	O
mail	O
,	O
calendar	O
,	O
calculator	O
and	O
marketplace	O
.	O
</s>
<s>
Gaia	O
is	O
written	O
entirely	O
in	O
HTML	B-Language
,	O
CSS	B-Language
,	O
and	O
JavaScript	B-Language
.	O
</s>
<s>
It	O
interfaces	O
with	O
the	O
operating	B-General_Concept
system	I-General_Concept
through	O
Open	O
Web	B-General_Concept
APIs	I-General_Concept
,	O
which	O
are	O
implemented	O
by	O
Gecko	B-Language
.	O
</s>
<s>
Because	O
it	O
uses	O
only	O
standard	O
web	B-General_Concept
APIs	I-General_Concept
,	O
it	O
can	O
work	O
on	O
other	O
OSes	O
and	O
other	O
web	O
browsers	O
.	O
</s>
<s>
Panasonic	O
continues	O
to	O
develop	O
the	O
operating	B-General_Concept
system	I-General_Concept
for	O
use	O
in	O
their	O
Smart	B-Device
TVs	I-Device
,	O
which	O
run	O
My	O
Home	O
Screen	O
,	O
powered	O
by	O
the	O
Firefox	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
Acadine	O
Technologies	O
has	O
derived	O
their	O
H5OS	O
from	O
Firefox	B-Operating_System
OS	I-Operating_System
as	O
well	O
.	O
</s>
<s>
Li	O
Gong	O
,	O
the	O
founder	O
of	O
the	O
company	O
,	O
had	O
overseen	O
the	O
development	O
of	O
Firefox	B-Operating_System
OS	I-Operating_System
while	O
serving	O
as	O
president	O
of	O
Mozilla	B-Operating_System
Corporation	O
.	O
</s>
<s>
A	O
fork	O
called	O
KaiOS	B-Device
has	O
been	O
used	O
on	O
a	O
few	O
feature	O
phones	O
,	O
including	O
Alcatel	O
's	O
OneTouch	O
Go	O
Flip	O
(	O
known	O
as	O
Cingular	O
Flip	O
2	O
on	O
AT&T	O
)	O
,	O
Reliance	O
Jio	O
's	O
JioPhone	O
(	O
LYF	O
F30C	O
)	O
,	O
and	O
Intex	O
's	O
Turbo+	O
4G	O
.	O
</s>
<s>
The	O
system	O
brings	O
support	O
for	O
4G	O
LTE	O
,	O
Wi-Fi	O
,	O
GPS	O
,	O
and	O
HTML5-based	O
apps	O
onto	O
non-touch	O
devices	O
with	O
an	O
optimized	O
user	B-Application
interface	I-Application
,	O
less	O
memory	O
usage	O
,	O
and	O
longer	O
battery	O
life	O
.	O
</s>
<s>
B2G	O
OS	O
(	O
Boot	B-Operating_System
2	I-Operating_System
Gecko	I-Operating_System
)	O
was	O
a	O
community-developed	O
mobile	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
,	O
and	O
the	O
successor	O
to	O
Firefox	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
It	O
follows	O
the	O
Firefox	B-Operating_System
OS	I-Operating_System
goal	O
of	O
providing	O
a	O
complete	O
,	O
community-based	O
alternative	O
operating	B-General_Concept
system	I-General_Concept
,	O
that	O
runs	O
software	O
as	O
web	B-Application
applications	I-Application
.	O
</s>
<s>
Its	O
mobile	B-Application
apps	I-Application
therefore	O
use	O
open	O
web	O
standards	O
and	O
programming	O
languages	O
such	O
as	O
JavaScript	B-Language
and	O
HTML5	B-Application
,	O
a	O
robust	O
privilege	O
model	O
,	O
and	O
open	O
web	B-General_Concept
APIs	I-General_Concept
that	O
can	O
communicate	O
directly	O
with	O
the	O
device	O
's	O
hardware	O
.	O
</s>
<s>
It	O
is	O
now	O
the	O
basis	O
of	O
KaiOS	B-Device
which	O
has	O
(	O
as	O
of	O
January	O
2019	O
)	O
over	O
17	O
percent	O
of	O
the	O
Indian	O
mobile	O
phone	O
market	O
and	O
is	O
the	O
third	O
most	O
popular	O
phone	O
OS	O
.	O
</s>
<s>
KaiOS	B-Device
is	O
closed-source	B-Application
.	O
</s>
<s>
B2G	O
OS	O
was	O
forked	O
from	O
Firefox	B-Operating_System
OS	I-Operating_System
following	O
Mozilla	B-Operating_System
's	O
decision	O
to	O
discontinue	O
support	O
for	O
their	O
mobile	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
.	O
</s>
<s>
The	O
decision	O
was	O
made	O
,	O
according	O
to	O
Ari	O
Jaaksi	O
and	O
David	O
Bryant	O
,	O
in	O
order	O
to	O
"	O
evolve	O
quickly	O
and	O
enable	O
substantial	O
new	O
architectural	O
changes	O
in	O
Gecko	B-Language
,	O
Mozilla	B-Operating_System
’s	O
Platform	O
Engineering	O
organization	O
needs	O
to	O
remove	O
all	O
B2G-related	O
code	O
from	O
mozilla-central.	O
"	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
used	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
like	O
Android	B-Application
does	O
.	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
used	O
the	O
Gecko	B-Language
engine	I-Language
on	O
top	O
of	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
to	O
render	O
the	O
screen	O
output	O
.	O
</s>
<s>
Apps	O
were	O
written	O
using	O
HTML5	B-Application
,	O
CSS	B-Language
,	O
and	O
JavaScript	B-Language
—	O
all	O
three	O
being	O
cooperative	O
languages	O
used	O
in	O
making	O
internet	O
webpages	O
.	O
</s>
<s>
In	O
essence	O
,	O
apps	O
on	O
Firefox	B-Operating_System
OS	I-Operating_System
were	O
web	B-Application
apps	I-Application
and	O
the	O
OS	O
could	O
be	O
thought	O
of	O
as	O
a	O
Web	O
browser	O
that	O
stored	O
content	O
off-line	O
.	O
</s>
<s>
On	O
the	O
other	O
hand	O
,	O
Android	B-Application
's	O
apps	O
are	O
coded	O
in	O
Java	O
using	O
Android	B-Application
Studio	O
.	O
</s>
<s>
Android	B-Application
also	O
enjoys	O
greater	O
maturity	O
and	O
support	O
.	O
</s>
<s>
Despite	O
these	O
differences	O
,	O
Firefox	B-Operating_System
OS	I-Operating_System
did	O
feature	O
all	O
the	O
essentials	O
required	O
to	O
use	O
a	O
smartphone	B-Application
.	O
</s>
<s>
Firefox	B-Application
launched	O
its	O
first	O
official	O
device	O
in	O
Germany	O
in	O
2014	O
,	O
which	O
was	O
an	O
Alcatel	O
One	O
Touch	O
Fire	O
.	O
</s>
<s>
,	O
Mozilla	B-Operating_System
had	O
launched	O
12	O
smartphones	B-Application
across	O
24	O
countries	O
.	O
</s>
<s>
Chris	O
Ziegler	O
of	O
the	O
technology	O
website	O
The	O
Verge	O
wrote	O
that	O
Firefox	B-Operating_System
OS	I-Operating_System
would	O
take	O
app	O
distribution	O
to	O
the	O
pre-iPhone	O
era	O
,	O
requiring	O
application	O
developers	O
to	O
deal	O
with	O
multiple	O
carriers	O
and	O
their	O
app	O
stores	O
.	O
</s>
<s>
At	O
the	O
Mobile	O
World	O
Congress	O
,	O
Mozilla	B-Operating_System
's	O
CEO	O
Gary	O
Kovacs	O
said	O
that	O
Firefox	B-Operating_System
OS	I-Operating_System
has	O
the	O
advantage	O
that	O
users	O
need	O
not	O
install	O
an	O
app	O
to	O
use	O
it	O
.	O
</s>
<s>
Mozilla	B-Operating_System
sought	O
to	O
make	O
the	O
most	O
of	O
this	O
with	O
the	O
search	O
functionality	O
built	O
into	O
Firefox	B-Operating_System
OS	I-Operating_System
,	O
a	O
core	O
feature	O
of	O
the	O
platform	O
.	O
</s>
<s>
Janne	O
Lindqvist	O
,	O
a	O
mobile	O
security	O
researcher	O
at	O
the	O
Rutgers	O
University	O
WINLAB	O
,	O
expressed	O
concern	O
about	O
the	O
discovery	O
mechanism	O
of	O
a	O
Web-based	B-Application
platform	O
,	O
but	O
a	O
Mozilla	B-Operating_System
spokesperson	O
stated	O
that	O
Mozilla	B-Operating_System
required	O
developers	O
to	O
"	O
package	O
downloadable	O
apps	O
in	O
a	O
zip	O
file	O
that	O
has	O
been	O
cryptographically	O
signed	O
by	O
the	O
store	O
from	O
which	O
it	O
originated	O
,	O
assuring	O
that	O
it	O
has	O
been	O
reviewed.	O
"	O
</s>
<s>
In	O
addition	O
,	O
"	O
apps	O
coming	O
back	O
from	O
search	O
are	O
given	O
only	O
limited	O
access	O
to	O
device	O
programming	B-Application
interfaces	I-Application
and	O
applications	O
,	O
unless	O
the	O
user	O
grants	O
permission	O
for	O
further	O
access.	O
"	O
</s>
<s>
Ben	O
Francis	O
,	O
an	O
engineer	O
on	O
the	O
Boot	B-Operating_System
to	I-Operating_System
Gecko	I-Operating_System
and	O
Firefox	B-Operating_System
OS	I-Operating_System
projects	O
,	O
described	O
the	O
changes	O
in	O
direction	O
of	O
the	O
project	O
from	O
open	O
web	O
technologies	O
for	O
app	O
development	O
,	O
to	O
cheap	O
smartphones	B-Application
,	O
to	O
connected	O
devices	O
;	O
and	O
how	O
evaluation	O
of	O
its	O
success	O
was	O
reduced	O
to	O
its	O
market	O
share	O
as	O
a	O
third	O
smartphone	B-Application
platform	O
(	O
after	O
Android	B-Application
and	O
iOS	B-Application
)	O
.	O
</s>
<s>
The	O
structural	O
similarities	O
between	O
Firefox	B-Operating_System
OS	I-Operating_System
and	O
Android	B-Application
allow	O
the	O
Mozilla	B-Operating_System
platform	O
to	O
run	O
on	O
a	O
number	O
of	O
devices	O
that	O
ship	O
with	O
Android	B-Application
.	O
</s>
<s>
While	O
some	O
ports	O
of	O
Firefox	B-Operating_System
OS	I-Operating_System
are	O
hardly	O
different	O
from	O
their	O
original	O
versions	O
,	O
others	O
are	O
heavily	O
modified	O
to	O
fit	O
the	O
device	O
in	O
question	O
.	O
</s>
<s>
There	O
are	O
quite	O
a	O
few	O
to	O
note	O
that	O
are	O
specifically	O
made	O
for	O
Firefox	B-Operating_System
OS	I-Operating_System
as	O
stated	O
above	O
.	O
</s>
<s>
There	O
are	O
also	O
emulators	O
for	O
testing	O
both	O
apps	O
and	O
the	O
OS	O
itself	O
on	O
the	O
desktop	B-Device
which	O
are	O
designed	O
for	O
both	O
OS	O
testing	O
and	O
the	O
developers	O
themselves	O
.	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
specific	O
devices	O
for	O
developers	O
:	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
specific	O
devices	O
for	O
consumers	O
:	O
</s>
<s>
Firefox	B-Operating_System
OS	I-Operating_System
has	O
been	O
ported	O
to	O
the	O
following	O
devices	O
:	O
</s>
