<s>
Vapor	B-Application
is	O
an	O
open	B-Application
source	I-Application
web	B-Application
framework	I-Application
written	O
in	O
Swift	B-Application
.	O
</s>
<s>
It	O
can	O
be	O
used	O
to	O
create	O
RESTful	B-Protocol
APIs	I-Protocol
,	O
web	O
apps	O
,	O
and	O
real-time	O
applications	O
using	O
WebSockets	B-Protocol
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
core	O
framework	O
,	O
Vapor	B-Application
provides	O
an	O
ORM	B-General_Concept
,	O
a	O
templating	O
language	O
,	O
and	O
packages	O
to	O
facilitate	O
user	O
authentication	O
and	O
authorization	O
.	O
</s>
<s>
Vapor	B-Application
's	O
source	O
code	O
is	O
hosted	O
on	O
GitHub	B-Application
and	O
licensed	O
under	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
Vapor	B-Application
has	O
been	O
a	O
part	O
of	O
Swift	B-Application
's	O
Server	O
APIs	O
working	O
group	O
since	O
2016	O
.	O
</s>
<s>
Vapor	B-Application
0.1.0	O
was	O
released	O
as	O
a	O
proof	O
of	O
concept	O
for	O
Swift	B-Application
on	O
the	O
server	O
a	O
month	O
after	O
Apple	O
open	O
sourced	O
Swift	B-Application
and	O
began	O
Linux	B-Application
platform	O
support	O
on	O
December	O
3	O
,	O
2015	O
.	O
</s>
<s>
Vapor	B-Application
1.0	O
arrived	O
in	O
September	O
2016	O
,	O
followed	O
by	O
the	O
release	O
of	O
Vapor	B-Application
2.0	O
in	O
May	O
2017	O
.	O
</s>
<s>
The	O
framework	O
was	O
rewritten	O
for	O
Vapor	B-Application
3.0	O
to	O
be	O
built	O
on	O
Apple	O
's	O
non-blocking	O
networking	O
framework	O
SwiftNIO	B-Application
.	O
</s>
<s>
Vapor	B-Application
3	O
was	O
released	O
in	O
May	O
2018	O
.	O
</s>
<s>
Apple	O
cited	O
the	O
speed	O
with	O
which	O
Vapor	B-Application
(	O
along	O
with	O
Kitura	B-Application
)	O
adopted	O
the	O
new	O
SwiftNIO	B-Application
framework	O
on	O
the	O
main	O
Swift.org	B-Application
server	O
page	O
.	O
</s>
<s>
Vapor	B-Application
3	O
's	O
beta	O
period	O
saw	O
educational	O
material	O
published	O
by	O
Packt	O
,	O
Paul	O
Hudson	O
,	O
Razeware	O
LLC	O
,	O
and	O
lynda.com	O
.	O
</s>
<s>
Vapor	B-Application
was	O
recognized	O
by	O
Swift.org	B-Application
with	O
an	O
official	O
Swift	B-Application
Forum	O
in	O
its	O
inaugural	O
group	O
of	O
Related	O
Projects	O
in	O
May	O
2018	O
.	O
</s>
<s>
Vapor	B-Application
4	O
's	O
Alpha	O
1	O
Release	O
started	O
in	O
May	O
2019	O
and	O
the	O
stable	O
version	O
released	O
in	O
April	O
2020	O
.	O
</s>
<s>
Source	O
:	O
Vapor	B-Application
Docs	O
&	O
GitHub	B-Application
Releases	O
.	O
</s>
<s>
Vapor	B-Application
supports	O
the	O
following	O
features	O
:	O
</s>
