<s>
Backdrop	B-Protocol
CMS	I-Protocol
is	O
an	O
Open	B-License
source	I-License
,	O
community-developed	O
,	O
content	B-Protocol
management	I-Protocol
system	I-Protocol
,	O
written	O
in	O
PHP	B-Application
,	O
and	O
licensed	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Backdrop	B-Protocol
CMS	I-Protocol
was	O
forked	O
from	O
the	O
Drupal	B-Application
CMS	O
in	O
2013	O
by	O
two	O
Drupal	B-Application
developers	O
,	O
Nate	O
Lampton	O
(	O
née	O
Nate	O
Haug	O
)	O
and	O
Jen	O
Lampton	O
.	O
</s>
<s>
Backdrop	O
is	O
very	O
similar	O
to	O
version	O
7	O
of	O
the	O
Drupal	B-Application
CMS	O
,	O
maintaining	O
most	O
of	O
the	O
same	O
functionality	O
and	O
features	O
.	O
</s>
<s>
The	O
project	O
's	O
mission	O
is	O
to	O
"	O
enable	O
people	O
to	O
build	O
highly	O
customized	O
websites	O
affordably	O
,	O
through	O
collaboration	O
and	O
open	B-License
source	I-License
software	O
"	O
.	O
</s>
<s>
The	O
Backdrop	B-Protocol
CMS	I-Protocol
project	O
was	O
forked	O
about	O
2	O
years	O
into	O
the	O
development	O
cycle	O
.	O
</s>
<s>
Backdrop	O
therefore	O
retained	O
some	O
features	O
newly	O
included	O
in	O
Drupal	B-Application
version	O
8	O
,	O
but	O
excluded	O
Symfony	B-Language
,	O
and	O
most	O
of	O
the	O
many	O
new	O
dependencies	O
that	O
were	O
added	O
to	O
Drupal	B-Application
8	O
.	O
</s>
<s>
Backdrop	O
's	O
founders	O
and	O
early	O
contributors	O
had	O
concerns	O
over	O
the	O
significant	O
(	O
and	O
at	O
the	O
time	O
controversial	O
)	O
changes	O
coming	O
to	O
Drupal	B-Application
,	O
and	O
expressed	O
concern	O
that	O
maintainers	O
of	O
existing	O
Drupal	B-Application
websites	O
would	O
be	O
unable	O
(	O
or	O
unwilling	O
)	O
to	O
manage	O
these	O
changes	O
,	O
and	O
the	O
cost	O
that	O
comes	O
with	O
them	O
.	O
</s>
<s>
Installation	O
of	O
Backdrop	O
requires	O
a	O
web	O
server	O
running	O
PHP	B-Application
5.6	O
or	O
higher	O
and	O
a	O
MySQL	O
5.0.15	O
database	O
or	O
higher	O
(	O
or	O
equivalent	O
,	O
like	O
MariaDB	B-Application
)	O
.	O
</s>
<s>
All	O
Backdrop	O
versions	O
are	O
being	O
tested	O
on	O
PHP	B-Application
version	O
5	O
,	O
PHP	B-Application
version	O
7	O
,	O
and	O
PHP	B-Application
version	O
8	O
.	O
</s>
<s>
Backdrop	O
core	O
,	O
and	O
the	O
majority	O
of	O
contributed	O
modules	O
are	O
developed	O
on	O
the	O
GitHub	B-Application
platform	O
.	O
</s>
<s>
Docker-based	O
local	O
development	O
environments	O
like	O
DDEV	O
and	O
Lando	O
support	O
Backdrop	B-Protocol
CMS	I-Protocol
out	O
of	O
the	O
box	O
by	O
providing	O
Backdrop	B-Protocol
CMS	I-Protocol
as	O
an	O
installation	O
option	O
.	O
</s>
<s>
There	O
are	O
upgrade	O
paths	O
available	O
to	O
developers	O
who	O
wish	O
to	O
upgrade	O
Drupal	B-Application
6	O
and	O
Drupal	B-Application
7	O
sites	O
to	O
Backdrop	O
.	O
</s>
<s>
Backdrop	O
is	O
a	O
community-developed	O
project	O
,	O
guided	O
by	O
a	O
Project	O
Management	O
Committee	O
(	O
PMC	O
)	O
,	O
which	O
is	O
modeled	O
on	O
the	O
respective	O
Apache	B-Application
project	O
PMC	O
.	O
</s>
<s>
The	O
project	O
is	O
maintained	O
by	O
volunteer	O
developers	O
on	O
the	O
GitHub	B-Application
platform	O
,	O
with	O
shared	O
code	O
contributions	O
reviewed	O
and	O
approved	O
by	O
community	O
members	O
.	O
</s>
<s>
As	O
of	O
November	O
26	O
,	O
2020	O
,	O
there	O
were	O
136	O
contributors	O
to	O
the	O
core	O
Backdrop	O
project	O
on	O
GitHub	B-Application
,	O
and	O
92	O
contributors	O
maintaining	O
717	O
user-contributed	O
modules	O
,	O
themes	O
,	O
and	O
layouts	O
The	O
Backdrop	O
community	O
hosts	O
weekly	O
development	O
,	O
design	O
,	O
and	O
outreach	O
webcasts	O
with	O
recordings	O
available	O
on	O
YouTube	O
.	O
</s>
<s>
Backdrop	B-Protocol
CMS	I-Protocol
is	O
a	O
member	O
of	O
the	O
Software	O
Freedom	O
Conservancy	O
.	O
</s>
<s>
This	O
membership	O
allows	O
Backdrop	B-Protocol
CMS	I-Protocol
to	O
operate	O
as	O
a	O
charitable	O
initiative	O
without	O
having	O
to	O
manage	O
their	O
own	O
corporate	O
structure	O
,	O
administrative	O
services	O
,	O
or	O
legal	O
team	O
.	O
</s>
<s>
CiviCRM	O
,	O
the	O
open	B-License
source	I-License
CRM	O
focused	O
on	O
non-profits	O
,	O
officially	O
supports	O
Backdrop	O
,	O
in	O
addition	O
to	O
Wordpress	O
and	O
Drupal	B-Application
.	O
</s>
<s>
The	O
Webform	O
CiviCRM	O
module	O
was	O
also	O
ported	O
from	O
Drupal	B-Application
to	O
Backdrop	O
and	O
can	O
be	O
used	O
for	O
more	O
complex	O
integrations	O
between	O
CiviCRM	O
and	O
Backdrop	O
.	O
</s>
