<s>
A-Frame	B-Language
is	O
an	O
open-source	B-Application
web	B-Application
framework	I-Application
for	O
building	O
virtual	B-Application
reality	I-Application
(	O
VR	O
)	O
experiences	O
.	O
</s>
<s>
It	O
is	O
maintained	O
by	O
developers	O
from	O
Supermedium	O
(	O
Diego	O
Marcos	O
,	O
Kevin	O
Ngo	O
)	O
and	O
Google	B-Application
(	O
Don	O
McCurdy	O
)	O
.	O
</s>
<s>
A-Frame	B-Language
is	O
an	O
entity	O
component	O
system	O
framework	O
for	O
Three.js	B-Language
where	O
developers	O
can	O
create	O
3D	O
and	O
WebVR	O
scenes	O
using	O
HTML	B-Language
.	O
</s>
<s>
HTML	B-Language
provides	O
a	O
familiar	O
authoring	O
tool	O
for	O
web	O
developers	O
and	O
designers	O
while	O
incorporating	O
a	O
popular	O
game	O
development	O
pattern	O
used	O
by	O
engines	O
such	O
as	O
Unity	B-Application
.	O
</s>
<s>
A-Frame	B-Language
was	O
originally	O
developed	O
within	O
the	O
Mozilla	B-Operating_System
VR	O
team	O
during	O
mid-to-late	O
2015	O
.	O
</s>
<s>
A-Frame	B-Language
was	O
created	O
in	O
order	O
to	O
allow	O
web	O
developers	O
and	O
designers	O
to	O
author	O
3D	O
and	O
VR	O
experiences	O
with	O
HTML	B-Language
without	O
having	O
to	O
know	O
WebGL	O
.	O
</s>
<s>
A-Frame	B-Language
'	O
s	O
first	O
public	O
release	O
was	O
on	O
December	O
16	O
,	O
2015	O
.	O
</s>
<s>
On	O
December	O
16	O
,	O
2019	O
A-Frame	B-Language
version	O
1.0.0	O
was	O
released	O
.	O
</s>
<s>
All	O
online	O
IDEs	B-Application
support	O
A-Frame	B-Language
as	O
a	O
result	O
of	O
being	O
based	O
on	O
HTML	B-Language
.	O
</s>
<s>
Real-time	O
on-line	O
support	O
is	O
provided	O
via	O
Slack	B-Protocol
.	O
</s>
<s>
Most	O
of	O
the	O
developers	O
are	O
also	O
on	O
Twitter	B-Application
.	O
</s>
<s>
Mozilla	B-Operating_System
Hubs	O
Chat	O
room	O
software	O
uses	O
A-Frame	B-Language
.	O
</s>
