<s>
Concrete	B-Protocol
CMS	I-Protocol
(	O
formerly	O
concrete5	B-Protocol
)	O
is	O
an	O
open-source	B-Application
content	B-Protocol
management	I-Protocol
system	I-Protocol
(	O
CMS	O
)	O
for	O
publishing	O
content	O
on	O
the	O
World	O
Wide	O
Web	O
and	O
intranets	B-General_Concept
.	O
</s>
<s>
Concrete	B-Protocol
CMS	I-Protocol
is	O
designed	O
for	O
ease	O
of	O
use	O
,	O
for	O
users	O
with	O
a	O
minimum	O
of	O
technical	O
skills	O
.	O
</s>
<s>
It	O
provides	O
version	B-Architecture
management	I-Architecture
for	O
every	O
page	O
,	O
similar	O
to	O
wiki	B-Protocol
software	I-Protocol
,	O
another	O
type	O
of	O
web	O
site	O
development	O
software	O
.	O
</s>
<s>
Concrete	B-Protocol
CMS	I-Protocol
allows	O
users	O
to	O
edit	O
images	O
through	O
an	O
embedded	O
editor	O
on	O
the	O
page	O
.	O
</s>
<s>
As	O
of	O
2021	O
,	O
there	O
are	O
over	O
62,000	O
live	O
websites	O
that	O
are	O
built	O
with	O
Concrete	B-Protocol
CMS	I-Protocol
.	O
</s>
<s>
Concrete	B-Protocol
CMS	I-Protocol
code	O
is	O
based	O
on	O
model	O
–	O
view	O
–	O
controller	O
architecture	O
and	O
object-oriented	B-Language
programming	I-Language
.	O
</s>
<s>
Some	O
core	O
features	O
are	O
:	O
integrated	O
server	O
caching	O
,	O
developer	O
API	B-General_Concept
,	O
version	B-Architecture
tracking	I-Architecture
system	I-Architecture
and	O
search	O
engine	O
optimization	O
.	O
</s>
<s>
Concrete	B-Protocol
CMS	I-Protocol
features	O
in-context	O
editing	O
(	O
the	O
ability	O
to	O
edit	O
website	O
content	O
directly	O
on	O
the	O
page	O
,	O
rather	O
than	O
in	O
an	O
administrative	O
interface	O
or	O
using	O
web	B-General_Concept
editor	I-General_Concept
software	O
)	O
.	O
</s>
<s>
Concrete	B-Protocol
CMS	I-Protocol
is	O
free	B-License
and	I-License
open-source	I-License
(	O
FOSS	B-License
)	O
under	O
the	O
MIT	B-License
software	I-License
license	I-License
.	O
</s>
<s>
Development	O
of	O
Concrete	B-Protocol
CMS	I-Protocol
began	O
in	O
2003	O
as	O
a	O
rapid-design	O
approach	O
to	O
building	O
the	O
now-defunct	O
LewisAndClark200.org,	O
the	O
official	O
site	O
for	O
the	O
Ad	O
Council	O
's	O
National	O
Council	O
for	O
the	O
Lewis	O
&	O
Clark	O
Bicentennial	O
.	O
</s>
<s>
This	O
major	O
new	O
release	O
added	O
new	O
features	O
like	O
multisite	O
support	O
,	O
boards	O
,	O
new	O
built-in	O
gallery	O
block	O
and	O
a	O
new	O
UI	O
based	O
on	O
Bootstrap	B-Application
5	I-Application
.	O
</s>
<s>
SourceForge	B-Application
's	O
"	O
Project	O
of	O
the	O
Month	O
"	O
October	O
2008	O
.	O
</s>
<s>
Installations	O
:	O
Though	O
Concrete5	B-Protocol
was	O
only	O
#12	O
in	O
weekly	O
downloads	O
,	O
they	O
showed	O
the	O
most	O
year-on-year	O
improvement	O
of	O
any	O
system	O
in	O
the	O
survey	O
-	O
up	O
517%	O
.	O
</s>
<s>
Third	O
Party	O
Support	O
:	O
Concrete5	B-Protocol
showed	O
a	O
second	O
year	O
of	O
strong	O
growth	O
in	O
the	O
Developer	O
Support	O
metric	O
.	O
</s>
<s>
Project	O
Site	O
Popularity	O
:	O
Concrete5	B-Protocol
showed	O
the	O
second	O
largest	O
increase	O
in	O
Alexa	O
Internet	O
rank	O
.	O
</s>
<s>
Mindshare	O
:	O
Concrete5	B-Protocol
placed	O
last	O
in	O
Brand	O
Familiarity	O
in	O
2009	O
;	O
in	O
2010	O
,	O
the	O
system	O
came	O
in	O
6th	O
.	O
</s>
<s>
Reputation	O
:	O
Concrete5	B-Protocol
led	O
the	O
group	O
in	O
brand	O
sentiment	O
,	O
abandonment	O
and	O
product	O
preference	O
,	O
and	O
came	O
in	O
second	O
in	O
conversion	O
rate	O
.	O
</s>
<s>
In	O
the	O
2011	O
Open	O
Source	O
CMS	O
Market	O
Share	O
Report	O
,	O
though	O
Concrete5	B-Protocol
still	O
lagged	O
Drupal	B-Application
,	O
Joomla	B-Protocol
and	O
WordPress	B-Application
in	O
terms	O
of	O
total	O
market	O
share	O
,	O
it	O
had	O
the	O
highest	O
growth	O
.	O
</s>
<s>
As	O
of	O
1	O
Jan	O
2015	O
,	O
Concrete5	B-Protocol
was	O
ranked	O
33rd	O
overall	O
by	O
W3Techs.com,	O
representing	O
0.2	O
%	O
of	O
the	O
CMS	O
marketplace	O
including	O
open-source	B-Application
and	O
commercial	O
offerings	O
.	O
</s>
<s>
As	O
of	O
Nov	O
.	O
3	O
,	O
2021	O
,	O
Concrete	B-Protocol
CMS	I-Protocol
was	O
listed	O
as	O
the	O
15th	O
most	O
popular	O
on	O
the	O
Entire	O
Internet	O
in	O
Open	O
Source	O
with	O
60,236	O
live	O
websites	O
and	O
55,855	O
domains	O
redirecting	O
to	O
those	O
sites	O
.	O
</s>
