<s>
Snap	B-Language
is	O
a	O
web	B-Application
development	I-Application
framework	I-Application
written	O
in	O
the	O
Haskell	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
The	O
Snap	B-Language
framework	O
comprises	O
:	O
</s>
<s>
snap-core	O
,	O
a	O
generic	O
Haskell	B-Language
web	O
server	O
API	O
.	O
</s>
<s>
snap-server	O
,	O
a	O
fast	O
HTTP	O
server	O
that	O
implements	O
the	O
snap-core	O
interface	O
.	O
</s>
<s>
Heist	O
,	O
an	O
HTML-based	O
templating	O
system	O
for	O
generating	O
pages	O
that	O
allows	O
you	O
to	O
bind	O
Haskell	B-Language
functionality	O
to	O
HTML	O
tags	O
for	O
a	O
clean	O
separation	O
of	O
view	O
and	O
backend	O
code	O
,	O
much	O
like	O
Lift	B-Language
's	O
snippets	O
.	O
</s>
<s>
Snaplets	B-Language
,	O
a	O
high-level	O
system	O
for	O
building	O
modular	O
web	O
applications	O
.	O
</s>
<s>
Built-in	O
snaplets	B-Language
for	O
templating	O
,	O
session	O
management	O
,	O
and	O
authentication	O
.	O
</s>
<s>
Third	O
party	O
snaplets	B-Language
for	O
features	O
such	O
as	O
file	O
uploads	O
,	O
database	O
connectivity	O
(	O
PostgreSQL	B-Application
,	O
MongoDB	B-Application
,	O
etc	O
.	O
</s>
<s>
)	O
,	O
generation	O
of	O
JavaScript	B-Language
from	O
Haskell	B-Language
code	O
,	O
and	O
more	O
.	O
</s>
<s>
The	O
Snap	B-Language
monad	O
for	O
stateful	O
access	O
to	O
HTTP	O
requests	O
and	O
responses	O
.	O
</s>
<s>
Snap	B-Language
runs	O
on	O
both	O
Windows	O
NT	O
and	O
Unix-like	O
platforms	O
.	O
</s>
<s>
Snap	B-Language
uses	O
the	O
I/O	O
model	O
,	O
As	O
of	O
version	O
1.0	O
,	O
its	O
i/o	O
is	O
implemented	O
with	O
.	O
</s>
<s>
Snap	B-Language
is	O
also	O
used	O
as	O
a	O
lightweight	O
,	O
standalone	O
Haskell	B-Language
server	O
.	O
</s>
<s>
The	O
static	O
site	O
generator	O
Hakyll	O
uses	O
Snap	B-Language
for	O
its	O
preview	O
mode	O
.	O
</s>
