<s>
UniKey	B-Language
is	O
the	O
most	O
popular	O
third-party	O
software	O
and	O
input	B-General_Concept
method	I-General_Concept
editor	I-General_Concept
(	O
IME	O
)	O
for	O
encoding	O
Vietnamese	O
for	O
Windows	B-Application
.	O
</s>
<s>
The	O
core	O
,	O
UniKey	B-Language
Vietnamese	O
Input	B-General_Concept
Method	I-General_Concept
,	O
is	O
also	O
the	O
engine	O
imbedded	O
in	O
many	O
Vietnamese	O
software-based	O
keyboards	O
in	O
Windows	B-Application
,	O
Android	B-Application
,	O
Linux	B-Application
,	O
macOS	B-Application
and	O
iOS	B-Application
.	O
</s>
<s>
UniKey	B-Language
is	O
free	O
and	O
the	O
source	O
code	O
for	O
the	O
UniKey	B-Language
Vietnamese	O
Input	B-General_Concept
Method	I-General_Concept
is	O
distributed	O
under	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
The	O
official	O
website	O
of	O
UniKey	B-Language
is	O
unikey.org,	O
which	O
supports	O
both	O
English	O
and	O
Vietnamese	O
.	O
</s>
<s>
UniKey	B-Language
supports	O
:	O
</s>
<s>
All	O
3	O
popular	O
input	B-General_Concept
methods	I-General_Concept
:	O
TELEX	O
,	O
VNI	O
and	O
VIQR	O
.	O
</s>
<s>
Win32	O
platforms	O
:	O
Windows	B-Application
10	O
,	O
8	O
,	O
7	O
,	O
Vista	O
,	O
2000	O
,	O
XP	O
,	O
9x/ME	O
.	O
</s>
<s>
UniKey	B-Language
is	O
a	O
minimalistic	O
software	O
and	O
does	O
not	O
require	O
additional	O
library	O
.	O
</s>
<s>
UniKey	B-Language
for	O
Windows	B-Application
was	O
released	O
as	O
a	O
free	O
program	O
in	O
1999	O
.	O
</s>
<s>
The	O
core	O
engine	O
,	O
UniKey	B-Language
Vietnamese	O
Input	B-General_Concept
Method	I-General_Concept
,	O
is	O
open	O
source	O
and	O
was	O
first	O
released	O
as	O
a	O
part	O
of	O
the	O
x-unikey	O
Vietnamese	O
keyboard	O
for	O
Linux	B-Application
in	O
2001	O
.	O
</s>
<s>
Since	O
then	O
,	O
the	O
engine	O
has	O
been	O
integrated	O
in	O
input	B-General_Concept
methods	I-General_Concept
in	O
different	O
OSes	O
and	O
software	O
frameworks	O
.	O
</s>
<s>
ibus-unikey	O
(	O
developed	O
by	O
Le	O
Quoc	O
Tuan	O
,	O
using	O
UniKey	B-Language
engine	O
)	O
is	O
widely	O
used	O
for	O
Linux	B-Application
distributions	O
.	O
</s>
<s>
From	O
Mac	B-Application
OS	I-Application
X	O
Leopard	O
onwards	O
,	O
released	O
in	O
2007	O
,	O
Apple	O
has	O
integrated	O
the	O
UniKey	B-Language
Vietnamese	O
Input	B-General_Concept
Method	I-General_Concept
to	O
the	O
built-in	O
Vietnamese	O
input	O
of	O
Mac	B-Application
OS	I-Application
.	O
</s>
<s>
From	O
2010	O
,	O
the	O
engine	O
has	O
also	O
been	O
integrated	O
to	O
the	O
built-in	O
Vietnamese	O
keyboard	O
in	O
iOS	B-Application
(	O
starting	O
from	O
iOS	B-Application
4.0	O
)	O
.	O
</s>
<s>
The	O
UniKey	B-Language
engine	O
is	O
also	O
now	O
running	O
in	O
iPhones	O
,	O
iPads	O
,	O
etc	O
.	O
</s>
<s>
UniKey	B-Language
is	O
developed	O
by	O
Pham	O
Kim	O
Long	O
.	O
</s>
