<s>
Plone	B-Language
is	O
a	O
free	B-Application
and	O
open	B-Application
source	I-Application
content	B-Protocol
management	I-Protocol
system	I-Protocol
(	O
CMS	B-Protocol
)	O
built	O
on	O
top	O
of	O
the	O
Zope	B-Language
application	B-Application
server	I-Application
.	O
</s>
<s>
Plone	B-Language
is	O
positioned	O
as	O
an	O
enterprise	B-Application
CMS	I-Application
and	O
is	O
commonly	O
used	O
for	O
intranets	B-General_Concept
and	O
as	O
part	O
of	O
the	O
web	O
presence	O
of	O
large	O
organizations	O
.	O
</s>
<s>
Plone	B-Language
's	O
proponents	O
cite	O
its	O
security	O
track	O
record	O
and	O
its	O
accessibility	O
as	O
reasons	O
to	O
choose	O
Plone	B-Language
.	O
</s>
<s>
Plone	B-Language
has	O
a	O
long	O
tradition	O
of	O
development	O
happening	O
in	O
so-called	O
"	O
sprints	O
"	O
,	O
in-person	O
meetings	O
of	O
developers	O
over	O
the	O
course	O
of	O
several	O
days	O
,	O
the	O
first	O
having	O
been	O
held	O
in	O
2003	O
and	O
nine	O
taking	O
place	O
in	O
2014	O
.	O
</s>
<s>
Certain	O
other	O
sprints	O
are	O
considered	O
strategic	O
so	O
are	O
funded	O
directly	O
by	O
the	O
Plone	B-Language
Foundation	I-Language
,	O
although	O
very	O
few	O
attendees	O
are	O
sponsored	O
directly	O
.	O
</s>
<s>
The	O
Plone	B-Language
Foundation	I-Language
also	O
holds	O
and	O
enforces	O
all	O
copyrights	O
and	O
trademarks	O
in	O
Plone	B-Language
,	O
and	O
is	O
assisted	O
by	O
legal	O
counsel	O
from	O
the	O
Software	O
Freedom	O
Law	O
Center	O
.	O
</s>
<s>
The	O
Plone	B-Language
project	O
began	O
in	O
1999	O
by	O
Alexander	O
Limi	O
,	O
Alan	O
Runyan	O
,	O
and	O
Vidar	O
Andersen	O
.	O
</s>
<s>
It	O
was	O
made	O
as	O
a	O
usability	B-General_Concept
layer	O
on	O
top	O
of	O
the	O
Zope	B-Language
Content	I-Language
Management	I-Language
Framework	I-Language
.	O
</s>
<s>
The	O
project	O
quickly	O
grew	O
into	O
a	O
community	O
,	O
receiving	O
plenty	O
of	O
new	O
add-on	B-Application
products	I-Application
from	O
its	O
users	O
.	O
</s>
<s>
The	O
increase	O
in	O
community	O
led	O
to	O
the	O
creation	O
of	O
the	O
annual	O
Plone	B-Language
conference	O
in	O
2003	O
,	O
which	O
is	O
still	O
running	O
today	O
.	O
</s>
<s>
In	O
addition	O
,	O
"	O
sprints	O
"	O
are	O
held	O
,	O
where	O
groups	O
of	O
developers	O
meet	O
to	O
work	O
on	O
Plone	B-Language
,	O
ranging	O
from	O
a	O
couple	O
of	O
days	O
to	O
a	O
week	O
.	O
</s>
<s>
In	O
March	O
2004	O
,	O
Plone	B-Language
2.0	O
was	O
released	O
.	O
</s>
<s>
This	O
release	O
brought	O
more	O
customizable	O
features	O
to	O
Plone	B-Language
,	O
and	O
enhanced	O
the	O
add-on	O
functions	O
.	O
</s>
<s>
In	O
May	O
2004	O
,	O
the	O
Plone	B-Language
Foundation	I-Language
was	O
created	O
for	O
the	O
development	O
,	O
marketing	O
,	O
and	O
protection	O
of	O
Plone	B-Language
.	O
</s>
<s>
The	O
Foundation	O
has	O
ownership	O
rights	O
over	O
the	O
Plone	B-Language
codebase	O
,	O
trademarks	O
,	O
and	O
domain	O
names	O
.	O
</s>
<s>
Even	O
though	O
the	O
foundation	O
was	O
set	O
up	O
to	O
protect	O
ownership	O
rights	O
,	O
Plone	B-Language
remains	O
open	B-Application
source	I-Application
.	O
</s>
<s>
On	O
March	O
12	O
,	O
2007	O
,	O
Plone	B-Language
3	O
was	O
released	O
.	O
</s>
<s>
Plone	B-Language
4	O
was	O
released	O
in	O
September	O
2010	O
.	O
</s>
<s>
There	O
are	O
over	O
450	O
developers	O
contributing	O
to	O
Plone	B-Language
's	O
code	O
.	O
</s>
<s>
Plone	B-Language
won	O
two	O
Packt	O
Open	B-Application
Source	I-Application
CMS	B-Protocol
Awards	O
.	O
</s>
<s>
4.2	O
July	O
5	O
,	O
2012	O
Diazo	B-Application
theming	B-Application
system	O
,	O
HTML5	B-Application
,	O
Python	B-Language
2.7	O
,	O
improved	O
collections	O
,	O
improved	O
search	O
.	O
</s>
<s>
4.3	O
April	O
13	O
,	O
2013	O
Dexterity	O
Content	O
Type	O
development	O
system	O
,	O
Kupu	B-Application
removal	O
,	O
KSS	O
removed	O
,	O
Password	O
API	O
,	O
Improved	O
Syndication	O
,	O
NewsML	O
,	O
TTW	O
Theme	O
Editor	O
5.0	O
September	O
28	O
,	O
2015	O
Simpler	O
,	O
faster	O
Dexterity	O
as	O
the	O
new	O
default	O
content	O
type	O
framework	O
.	O
</s>
<s>
Theming	B-Application
is	O
made	O
easier	O
with	O
Diazo	B-Application
.	O
</s>
<s>
A	O
modern	O
series	O
of	O
form	O
widgets	O
have	O
been	O
created	O
with	O
usability	B-General_Concept
and	O
accessibility	O
in	O
mind	O
.	O
</s>
<s>
Plone	B-Language
runs	O
on	O
the	O
Zope	B-Language
application	B-Application
server	I-Application
,	O
which	O
is	O
written	O
in	O
Python	B-Language
.	O
</s>
<s>
Plone	B-Language
by	O
default	O
stores	O
all	O
information	O
in	O
Zope	B-Language
's	O
built-in	O
transactional	O
object	O
database	O
(	O
ZODB	B-Application
)	O
.	O
</s>
<s>
It	O
comes	O
with	O
installers	O
for	O
Windows	B-Application
,	O
macOS	B-Application
,	O
and	O
Linux	B-Application
,	O
along	O
with	O
other	O
operating	O
systems	O
.	O
</s>
<s>
New	O
updates	O
are	O
released	O
regularly	O
on	O
Plone	B-Language
's	O
website	O
.	O
</s>
<s>
Plone	B-Language
is	O
available	O
in	O
over	O
50	O
languages	O
.	O
</s>
<s>
It	O
complies	O
with	O
WCAG	O
2.0	O
AA	O
and	O
U.S.	O
section	O
508	O
,	O
which	O
allows	O
people	O
with	O
disabilities	O
to	O
access	O
and	O
use	O
Plone	B-Language
.	O
</s>
<s>
A	O
major	O
part	O
of	O
Plone	B-Language
is	O
its	O
use	O
of	O
skins	B-Application
and	O
themes	B-Application
.	O
</s>
<s>
Plone	B-Language
's	O
Diazo	B-Application
theming	B-Application
engine	O
can	O
be	O
used	O
to	O
customize	O
a	O
website	O
's	O
look	O
.	O
</s>
<s>
These	O
themes	B-Application
are	O
written	O
with	O
JavaScript	B-Language
,	O
HTML	B-Language
,	O
XSLT	B-Application
,	O
and	O
Cascading	B-Language
Style	I-Language
Sheets	I-Language
.	O
</s>
<s>
In	O
addition	O
,	O
Plone	B-Language
comes	O
with	O
a	O
user	O
management	O
system	O
called	O
Pluggable	O
Authentication	O
Service	O
(	O
PAS	O
)	O
.	O
</s>
<s>
PAS	O
is	O
used	O
to	O
search	O
for	O
users	O
and	O
groups	O
in	O
Plone	B-Language
.	O
</s>
<s>
Most	O
importantly	O
,	O
PAS	O
covers	O
the	O
security	O
involved	O
for	O
users	O
and	O
groups	O
,	O
requiring	O
authentication	O
in	O
order	O
to	O
log	O
into	O
Plone	B-Language
.	O
</s>
<s>
A	O
large	O
part	O
of	O
Plone	B-Language
's	O
changes	O
have	O
come	O
from	O
its	O
community	O
.	O
</s>
<s>
Since	O
Plone	B-Language
is	O
open	B-Application
source	I-Application
,	O
the	O
members	O
of	O
the	O
Plone	B-Language
community	O
regularly	O
make	O
alterations	O
or	O
add-ons	O
to	O
Plone	B-Language
's	O
interface	O
,	O
and	O
make	O
these	O
changes	O
available	O
to	O
the	O
rest	O
of	O
the	O
community	O
via	O
Plone	B-Language
's	O
website	O
.	O
</s>
<s>
The	O
name	O
Plone	B-Language
comes	O
from	O
a	O
band	O
by	O
that	O
name	O
and	O
"	O
Plone	B-Language
should	O
look	O
and	O
feel	O
like	O
the	O
band	O
sounds	O
"	O
.	O
</s>
<s>
Plone	B-Language
is	O
built	O
on	O
the	O
Zope	B-Language
application	O
framework	O
and	O
therefore	O
is	O
primarily	O
written	O
in	O
Python	B-Language
but	O
also	O
contains	O
large	O
amounts	O
of	O
HTML	B-Language
and	O
CSS	B-Language
,	O
as	O
well	O
as	O
JavaScript	B-Language
.	O
</s>
<s>
Plone	B-Language
uses	O
jQuery	B-Language
as	O
its	O
Javascript	B-Language
framework	O
in	O
current	O
versions	O
,	O
after	O
abandoning	O
a	O
declarative	O
framework	O
for	O
progressive	O
enhancement	O
called	O
KSS	O
.	O
</s>
<s>
Plone	B-Language
uses	O
an	O
XML	O
dialect	O
called	O
ZCML	O
for	O
configuration	O
,	O
as	O
well	O
as	O
an	O
XML	O
based	O
templating	O
language	O
,	O
meaning	O
approximately	O
10%	O
of	O
the	O
total	O
source	O
code	O
is	O
XML	O
based	O
.	O
</s>
<s>
The	O
community	O
supports	O
and	O
distributes	O
thousands	O
of	O
add-ons	O
via	O
company	O
websites	O
but	O
mostly	O
through	O
PYPI	O
and	O
www.plone.org	O
.	O
</s>
<s>
There	O
are	O
currently	O
2149	O
packages	O
available	O
via	O
PyPI	O
for	O
customizing	O
Plone	B-Language
.	O
</s>
<s>
Since	O
its	O
release	O
,	O
many	O
of	O
Plone	B-Language
's	O
updates	O
and	O
add-ons	O
have	O
come	O
from	O
its	O
community	O
.	O
</s>
<s>
Events	O
called	O
Plone	B-Language
"	O
sprints	O
"	O
consist	O
of	O
members	O
of	O
the	O
community	O
coming	O
together	O
for	O
a	O
week	O
and	O
helping	O
improve	O
Plone	B-Language
.	O
</s>
<s>
The	O
Plone	B-Language
conference	O
is	O
also	O
attended	O
and	O
supported	O
by	O
the	O
members	O
of	O
the	O
Plone	B-Language
community	O
.	O
</s>
<s>
In	O
addition	O
,	O
Plone	B-Language
has	O
an	O
active	O
IRC	B-Protocol
channel	O
to	O
give	O
support	O
to	O
users	O
who	O
have	O
questions	O
or	O
concerns	O
.	O
</s>
<s>
Up	O
through	O
2007	O
,	O
there	O
have	O
been	O
over	O
one	O
million	O
downloads	O
of	O
Plone	B-Language
.	O
</s>
<s>
Plone	B-Language
's	O
development	O
team	O
has	O
also	O
been	O
ranked	O
in	O
the	O
top	O
2%	O
of	O
the	O
largest	O
open	B-Application
source	I-Application
communities	O
.	O
</s>
<s>
A	O
2007	O
comparison	O
of	O
CMSes	O
rated	O
Plone	B-Language
highly	O
in	O
a	O
number	O
of	O
categories	O
(	O
standards	O
conformance	O
,	O
access	O
control	O
,	O
internationalization	O
,	O
aggregation	O
,	O
user-generated	O
content	O
,	O
micro-applications	O
,	O
active	O
user	O
groups	O
and	O
value	O
)	O
.	O
</s>
<s>
However	O
,	O
as	O
most	O
of	O
the	O
major	O
CMSes	O
,	O
including	O
Plone	B-Language
,	O
Drupal	B-Application
,	O
WordPress	B-Application
and	O
Joomla	B-Protocol
,	O
have	O
undergone	O
major	O
development	O
since	O
then	O
,	O
only	O
limited	O
value	O
can	O
be	O
drawn	O
from	O
this	O
comparison	O
.	O
</s>
<s>
Plone	B-Language
is	O
available	O
on	O
many	O
different	O
operating	O
systems	O
,	O
due	O
to	O
its	O
use	O
of	O
platform-independent	B-Operating_System
underlying	O
technologies	O
such	O
as	O
Python	B-Language
and	O
Zope	B-Language
.	O
</s>
<s>
Plone	B-Language
's	O
Web-based	O
administrative	O
interface	O
is	O
optimized	O
for	O
standards	O
,	O
allowing	O
it	O
to	O
work	O
with	O
most	O
common	O
web	O
browsers	O
,	O
and	O
uses	O
additional	O
accessibility	O
standards	O
to	O
help	O
users	O
who	O
have	O
disabilities	O
.	O
</s>
<s>
All	O
of	O
Plone	B-Language
's	O
features	O
are	O
customizable	O
,	O
and	O
free	B-Application
add-ons	O
are	O
available	O
from	O
the	O
Plone	B-Language
website	O
.	O
</s>
<s>
According	O
to	O
Mitre	O
,	O
Plone	B-Language
has	O
the	O
lowest	O
number	O
of	O
reported	O
lifetime	O
and	O
year	O
to	O
date	O
vulnerabilities	O
when	O
compared	O
to	O
other	O
popular	O
Content	B-Protocol
Management	I-Protocol
Systems	I-Protocol
.	O
</s>
<s>
This	O
security	O
record	O
has	O
led	O
to	O
widespread	O
adoption	O
of	O
Plone	B-Language
by	O
government	O
and	O
non-governmental	O
organizations	O
,	O
including	O
the	O
FBI	O
.	O
</s>
