<s>
Serendipity	B-Protocol
is	O
a	O
blog	O
and	O
web-based	O
content	B-Protocol
management	I-Protocol
system	I-Protocol
written	O
in	O
PHP	B-Application
and	O
available	O
under	O
a	O
BSD	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
It	O
supports	O
PostgreSQL	B-Application
,	O
MySQL	B-Application
,	O
SQLite	B-Language
database	O
backends	O
,	O
the	O
Smarty	B-Language
template	B-Application
engine	I-Application
,	O
and	O
a	O
plugin	B-Application
architecture	O
for	O
user	O
contributed	O
modifications	O
.	O
</s>
<s>
Serendipity	B-Protocol
is	O
available	O
through	O
a	O
number	O
of	O
"	O
one-click	O
install	O
"	O
services	O
such	O
as	O
Installatron	O
.	O
</s>
<s>
Serendipity	B-Protocol
's	O
plugin	B-Application
architecture	O
allows	O
users	O
to	O
modify	O
both	O
the	O
appearance	O
of	O
the	O
blog	O
and	O
its	O
features	O
.	O
</s>
<s>
Serendipity	B-Protocol
's	O
SPARTACUS	O
plugin	B-Application
automatically	O
checks	O
the	O
central	O
repository	O
for	O
plugins/templates	O
upgrades	O
and	O
new	O
functionality	O
whenever	O
a	O
user	O
checks	O
the	O
list	O
.	O
</s>
<s>
Users	O
can	O
install	O
more	O
than	O
120	O
plugins	B-Application
.	O
</s>
<s>
The	O
Serendipity	B-Protocol
project	O
was	O
started	O
by	O
Jannis	O
Hermanns	O
in	O
the	O
winter	O
of	O
2002	O
,	O
then	O
still	O
called	O
jBlog	O
.	O
</s>
<s>
Due	O
to	O
a	O
naming	O
conflict	O
with	O
an	O
existing	O
blog	O
publishing	O
system	O
,	O
Sterling	O
Hughes	O
suggested	O
the	O
name	O
serendipity	B-Protocol
.	O
</s>
<s>
The	O
short	O
form	O
s9y	B-Protocol
stems	O
from	O
abbreviations	O
such	O
as	O
i18n	O
for	O
internationalization	O
where	O
the	O
number	O
represents	O
the	O
amount	O
of	O
omitted	O
letters	O
.	O
</s>
<s>
The	O
first	O
book	O
about	O
Serendipity	B-Protocol
was	O
published	O
in	O
German	O
by	O
OpenSourcePress	O
:	O
Serendipity	B-Protocol
-	O
Individuelle	O
Weblogs	O
für	O
Einsteiger	O
und	O
Profis	O
.	O
</s>
<s>
The	O
publisher	O
donated	O
the	O
book	O
's	O
copyright	O
to	O
the	O
Serendipity	B-Protocol
project	O
,	O
who	O
has	O
released	O
it	O
under	O
a	O
CC-BY-NC-SA	O
license	O
and	O
made	O
a	O
GitHub	B-Application
repository	O
available	O
online	O
.	O
</s>
