<s>
Proto.io	B-Application
is	O
an	O
application	B-Application
prototyping	O
platform	O
launched	O
in	O
2011	O
and	O
developed	O
by	O
PROTOIO	O
Inc	O
.	O
</s>
<s>
Originally	O
designed	O
to	O
prototype	O
on	O
mobile	O
devices	O
,	O
Proto.io	B-Application
has	O
expanded	O
to	O
allow	O
users	O
to	O
prototype	O
apps	O
for	O
anything	O
with	O
a	O
screen	O
interface	O
,	O
including	O
Smart	B-Device
TVs	I-Device
,	O
digital	B-Device
camera	I-Device
interfaces	O
,	O
cars	O
,	O
airplanes	O
,	O
and	O
gaming	O
consoles	O
.	O
</s>
<s>
Proto.io	B-Application
utilizes	O
a	O
drag	O
and	O
drop	O
user	O
interface	O
(	O
UI	O
)	O
and	O
does	O
not	O
require	O
coding	B-General_Concept
.	O
</s>
<s>
Since	O
its	O
launch	O
in	O
2011	O
,	O
there	O
have	O
been	O
six	O
versions	O
of	O
Proto.io	B-Application
released	O
.	O
</s>
<s>
In	O
2011	O
,	O
the	O
100%	O
web-based	O
Proto.io	B-Application
tool	O
became	O
available	O
online	O
.	O
</s>
<s>
The	O
web-based	O
environment	O
allowed	O
users	O
to	O
create	O
a	O
project	O
for	O
either	O
the	O
iPad	B-Device
or	O
iPhone	B-Device
.	O
</s>
<s>
After	O
a	O
user	O
created	O
a	O
few	O
screens	O
for	O
a	O
developing	O
app	O
,	O
Proto.io	B-Application
could	O
then	O
link	O
those	O
pages	O
together	O
with	O
interactive	O
actions	O
that	O
are	O
custom	O
to	O
hand	O
held	O
devices	O
,	O
such	O
as	O
clicks	O
,	O
taps	O
,	O
tap	O
and	O
holds	O
,	O
and	O
swipes	O
.	O
</s>
<s>
Once	O
the	O
user	O
had	O
completed	O
the	O
prototype	O
,	O
Proto.io	B-Application
could	O
then	O
publish	O
and	O
preview	O
the	O
finished	O
product	O
not	O
only	O
on	O
the	O
web	O
browser	O
but	O
also	O
on	O
the	O
actual	O
mobile	O
device	O
.	O
</s>
<s>
Proto.io	B-Application
V2	O
was	O
released	O
in	O
early	O
2012	O
and	O
expanded	O
the	O
supported	O
mobile	O
devices	O
to	O
accommodate	O
for	O
the	O
Android	O
platform	O
,	O
to	O
include	O
the	O
Android	O
Smartphone	O
and	O
Tablet	O
.	O
</s>
<s>
Proto.io	B-Application
V2	O
also	O
added	O
collaboration	O
features	O
like	O
comments	O
and	O
annotations	O
as	O
well	O
as	O
export	O
to	O
HTML	B-Language
functionality	O
.	O
</s>
<s>
On	O
September	O
28	O
,	O
2012	O
,	O
with	O
the	O
release	O
of	O
version	O
3	O
of	O
the	O
platform	O
,	O
Proto.io	B-Application
became	O
the	O
first	O
prototyping	O
tool	O
to	O
allow	O
users	O
to	O
prototype	O
on	O
almost	O
any	O
device	O
with	O
a	O
screen	O
interface	O
,	O
and	O
the	O
first	O
mobile	O
prototyping	O
tool	O
to	O
support	O
full	O
feature	O
animations	O
of	O
user	O
interface	O
items	O
within	O
a	O
prototype	O
screen	O
.	O
</s>
<s>
Proto.io	B-Application
V3	O
also	O
supports	O
web	O
fonts	O
,	O
which	O
allows	O
the	O
user	O
to	O
access	O
all	O
available	O
online	O
fonts	O
.	O
</s>
<s>
The	O
fourth	O
version	O
of	O
Proto.io	B-Application
was	O
launched	O
in	O
April	O
2013	O
.	O
</s>
<s>
October	O
2013	O
brought	O
one	O
of	O
the	O
major	O
releases	O
of	O
Proto.io	B-Application
.	O
</s>
<s>
The	O
most	O
recent	O
release	O
of	O
Proto.io	B-Application
was	O
launched	O
in	O
July	O
2016	O
.	O
</s>
