<s>
Perfect	O
is	O
an	O
application	B-Application
server	I-Application
,	O
web	B-Application
and	O
server	B-Application
framework	O
written	O
in	O
the	O
programming	O
language	O
Swift	B-Application
.	O
</s>
<s>
It	O
provides	O
tools	O
for	O
developing	O
web	B-Application
and	O
other	O
representational	B-Protocol
state	I-Protocol
transfer	I-Protocol
(	O
REST	O
)	O
services	O
in	O
Swift	B-Application
,	O
and	O
web	B-Application
server	I-Application
and	O
datasource	B-General_Concept
connectors	O
,	O
providing	O
default	O
structures	O
for	O
developers	O
working	O
with	O
databases	O
,	O
web	B-Application
services	O
,	O
and	O
web	B-Application
pages	O
.	O
</s>
<s>
Its	O
main	O
focus	O
is	O
to	O
make	O
mobile	O
development	O
easier	O
by	O
using	O
the	O
Swift	B-Application
language	I-Application
on	O
both	O
sides	O
of	O
the	O
client	B-Operating_System
–	I-Operating_System
server	I-Operating_System
model	I-Operating_System
,	O
the	O
client	B-Protocol
mobile	O
device	O
,	O
and	O
the	O
server	B-Application
,	O
where	O
it	O
competes	O
with	O
other	O
server-side	O
development	O
tools	O
such	O
as	O
Node.js	B-Language
and	O
Python	B-Language
.	O
</s>
<s>
It	O
is	O
open-source	B-Application
software	I-Application
,	O
released	O
under	O
an	O
Apache	B-Application
License	I-Application
.	O
</s>
<s>
Perfect	O
1.0	O
was	O
released	O
on	O
November	O
23	O
,	O
2015	O
,	O
just	O
before	O
the	O
Swift	B-Application
language	I-Application
became	O
open-source	B-Application
,	O
and	O
draws	O
much	O
of	O
its	O
history	O
from	O
a	O
programming	O
language	O
named	O
Lasso	B-Language
,	O
formerly	O
part	O
of	O
Apple	O
's	O
product	O
line	O
.	O
</s>
<s>
Version	O
2.0	O
was	O
rolled	O
out	O
September	O
6th	O
2016	O
and	O
brought	O
Swift	B-Application
3	O
compatibility	O
and	O
a	O
more	O
modular	O
approach	O
to	O
the	O
framework	O
.	O
</s>
