<s>
The	O
POrtable	B-Architecture
COmponents	O
(	O
POCO	O
)	O
C++	B-Language
Libraries	B-Library
are	O
computer	O
software	O
,	O
a	O
set	O
of	O
class	O
libraries	B-Library
for	O
developing	O
computer	O
network-centric	O
,	O
portable	B-Architecture
applications	O
in	O
the	O
programming	O
language	O
C++	B-Language
.	O
</s>
<s>
The	O
libraries	B-Library
cover	O
functions	O
such	O
as	O
threads	B-Operating_System
,	O
thread	B-Operating_System
synchronizing	O
,	O
file	B-Application
system	I-Application
access	O
,	O
streams	B-Architecture
,	O
shared	O
libraries	B-Library
and	O
class	O
loading	O
,	O
Internet	B-Protocol
sockets	I-Protocol
,	O
and	O
network	O
communications	O
protocols	O
(	O
HTTP	B-Protocol
,	O
FTP	B-Protocol
,	O
SMTP	B-Protocol
,	O
etc	O
.	O
</s>
<s>
)	O
,	O
and	O
include	O
an	O
HTTP	B-Application
server	I-Application
,	O
and	O
an	O
XML	B-Protocol
parser	I-Protocol
with	O
SAX2	B-Application
and	O
DOM	B-General_Concept
interfaces	O
and	O
SQL	B-Language
database	I-Language
access	O
.	O
</s>
<s>
The	O
modular	O
and	O
efficient	O
design	O
and	O
implementation	O
makes	O
the	O
libraries	B-Library
well	O
suited	O
for	O
embedded	B-Architecture
system	I-Architecture
development	O
.	O
</s>
<s>
The	O
libraries	B-Library
are	O
free	B-License
and	I-License
open-source	I-License
software	I-License
distributed	O
under	O
the	O
Boost	B-Language
Software	O
License	O
1.0	O
.	O
</s>
<s>
POCO	O
is	O
a	O
set	O
of	O
C++	B-Language
libraries	B-Library
providing	O
users	O
with	O
library	B-Library
support	O
similar	O
to	O
that	O
found	O
in	O
other	O
development	O
environments	O
,	O
like	O
the	O
Java	B-Library
Class	I-Library
Library	I-Library
,	O
.NET	B-Application
Framework	I-Application
,	O
or	O
Apple	B-Operating_System
's	I-Operating_System
Cocoa	I-Operating_System
.	O
</s>
<s>
POCO	O
is	O
centered	O
on	O
network-centric	O
application	O
domains	O
and	O
developed	O
with	O
modern	O
ANSI/ISO	O
Standard	O
C++	B-Language
and	O
C++	B-Language
Standard	O
Library	B-Library
facilities	O
and	O
techniques	O
with	O
emphasis	O
on	O
powerful	O
functionality	O
,	O
ease	O
of	O
use	O
,	O
and	O
consistency	O
.	O
</s>
<s>
Governed	O
primarily	O
by	O
code	O
quality	O
,	O
consistent	O
style	O
and	O
unit	O
testing	O
,	O
POCO	O
is	O
highly	O
portable	B-Architecture
,	O
and	O
already	O
ported	O
to	O
a	O
variety	O
of	O
different	O
platforms	O
.	O
</s>
<s>
,	O
POCO	B-Language
C++	I-Language
Libraries	I-Language
are	O
split	O
into	O
five	O
core	O
libraries	B-Library
with	O
optional	O
add-on	O
libraries	B-Library
available	O
with	O
each	O
release	O
.	O
</s>
<s>
The	O
design	O
and	O
hierarchy	O
of	O
POCO	O
C++	B-Language
is	O
considered	O
well	O
designed	O
.	O
</s>
<s>
The	O
five	O
core	O
component	O
libraries	B-Library
cover	O
the	O
following	O
areas	O
that	O
can	O
be	O
found	O
in	O
the	O
basic	O
edition	O
:	O
</s>
<s>
Memory	O
management	O
–	O
Resource	B-Application
Acquisition	I-Application
Is	I-Application
Initialization	I-Application
(	O
RAII	B-Application
)	O
,	O
auto_ptr	O
,	O
reference	O
counting	O
garbage	O
collection	O
,	O
etc	O
.	O
</s>
<s>
One	O
design	O
goal	O
of	O
many	O
targeted	O
decisions	O
are	O
based	O
around	O
POCO	O
C++	B-Language
providing	O
an	O
easy	O
to	O
use	O
component	O
library	B-Library
that	O
works	O
out	B-General_Concept
of	I-General_Concept
the	I-General_Concept
box	I-General_Concept
.	O
</s>
<s>
,	O
the	O
libraries	B-Library
are	O
available	O
in	O
two	O
package	O
formats	O
:	O
the	O
basic	O
and	O
the	O
complete	O
editions	O
.	O
</s>
<s>
Being	O
open	O
source	O
enables	O
and	O
encourages	O
development	O
of	O
further	O
library	B-Library
functions	I-Library
.	O
</s>
<s>
Design	O
and	O
development	O
of	O
existing	O
and	O
upcoming	O
library	B-Library
support	O
is	O
driven	O
by	O
the	O
pragmatic	O
needs	O
of	O
the	O
user	O
base	O
.	O
</s>
<s>
Library	B-Library
additions	O
occur	O
in	O
a	O
sandbox	O
development	O
environment	O
and	O
are	O
reviewed	O
and	O
integrated	O
into	O
the	O
main	O
library	B-Library
releases	O
as	O
approved	O
by	O
the	O
core	O
development	O
team	O
with	O
input	O
from	O
contributors	O
.	O
</s>
<s>
2004	O
–	O
Günter	O
Obiltschnig	O
began	O
POCO	O
by	O
developing	O
the	O
class	O
libraries	B-Library
because	O
of	O
being	O
dissatisfied	O
by	O
what	O
was	O
available	O
in	O
C++	B-Language
class	O
libraries	B-Library
for	O
network	O
centric	O
programming	O
.	O
</s>
<s>
February	O
21	O
,	O
2005	O
–	O
The	O
first	O
public	O
release	O
on	O
SourceForge	B-Application
,	O
under	O
the	O
Sleepycat	B-License
License	I-License
,	O
contained	O
the	O
Foundation	O
and	O
XML	B-Protocol
support	O
libraries	B-Library
.	O
</s>
<s>
January	O
19	O
,	O
2006	O
–	O
POCO	O
1.0	O
was	O
released	O
,	O
including	O
the	O
Net	O
library	B-Library
.	O
</s>
<s>
July	O
2006	O
–	O
POCO	O
was	O
relicensed	O
under	O
the	O
Boost	B-Language
license	O
.	O
</s>
<s>
December	O
2014	O
–	O
POCO	O
1.6	O
was	O
released	O
,	O
including	O
the	O
JSON	B-General_Concept
and	O
MongoDB	O
libraries	B-Library
and	O
many	O
other	O
improvements	O
.	O
</s>
