<s>
BookStack	B-Protocol
is	O
a	O
free	B-License
and	I-License
open-source	I-License
wiki	B-Protocol
software	I-Protocol
aimed	O
for	O
a	O
simple	O
,	O
self-hosted	O
,	O
and	O
easy-to-use	O
platform	O
.	O
</s>
<s>
Based	O
on	O
Laravel	B-Language
,	O
a	O
PHP	B-Application
framework	O
,	O
BookStack	B-Protocol
is	O
released	O
under	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
BookStack	B-Protocol
is	O
multilingual	O
and	O
available	O
in	O
over	O
thirty	O
languages	O
.	O
</s>
<s>
For	O
the	O
simplicity	O
,	O
BookStack	B-Protocol
is	O
considered	O
as	O
suitable	O
for	O
smaller	O
businesses	O
or	O
freelancers	O
.	O
</s>
<s>
BookStack	B-Protocol
’s	O
first	O
commit	O
was	O
published	O
on	O
12	O
July	O
2015	O
by	O
Dan	O
Brown	O
,	O
a	O
British	O
web	O
developer	O
.	O
</s>
<s>
Originally	O
named	O
‘	O
Oxbow’	O
,	O
the	O
project	O
was	O
renamed	O
to	O
BookStack	B-Protocol
after	O
only	O
11	O
days	O
.	O
</s>
<s>
The	O
initial	O
proper	O
layout	O
was	O
inspired	O
by	O
DokuWiki	B-Protocol
,	O
and	O
in	O
October	O
of	O
the	O
same	O
year	O
,	O
the	O
current	O
layout	O
of	O
BookStack	B-Protocol
was	O
settled	O
.	O
</s>
<s>
BookStack	B-Protocol
has	O
become	O
the	O
most	O
popular	O
wiki	B-Protocol
software	I-Protocol
written	O
in	O
PHP	B-Application
on	O
GitHub	B-Application
,	O
as	O
of	O
June	O
2021	O
.	O
</s>
<s>
PHP	B-Application
,	O
MySQL	B-Application
or	O
MariaDB	B-Application
,	O
Git	B-Application
(	O
for	O
updates	O
)	O
,	O
and	O
Composer	B-Application
are	O
required	O
for	O
the	O
installation	O
of	O
BookStack	B-Protocol
.	O
</s>
<s>
It	O
also	O
can	O
be	O
installed	O
via	O
a	O
Docker	B-Language
container	O
.	O
</s>
<s>
BookStack	B-Protocol
,	O
as	O
the	O
name	O
suggests	O
,	O
is	O
based	O
of	O
the	O
ideas	O
of	O
a	O
normal	O
stack	O
of	O
books	O
.	O
</s>
<s>
The	O
categorisation	O
of	O
BookStack	B-Protocol
is	O
limited	O
to	O
four	O
levels	O
—	O
shelves	O
,	O
books	O
,	O
chapters	O
,	O
and	O
pages	O
.	O
</s>
<s>
On	O
a	O
BookStack	B-Protocol
website	O
,	O
chapters	O
and	O
pages	O
can	O
be	O
sorted	O
within	O
a	O
book	O
.	O
</s>
<s>
BookStack	B-Protocol
provides	O
WYSIWYG	B-Application
and	O
Markdown	O
editors	O
,	O
and	O
the	O
Markdown	O
editor	O
also	O
provides	O
a	O
live	O
preview	O
.	O
</s>
<s>
The	O
email/password	O
login	O
social	O
providers	O
such	O
as	O
GitHub	B-Application
,	O
Google	B-Application
,	O
Slack	B-Protocol
,	O
AzureAD	B-Application
and	O
more	O
can	O
be	O
used	O
.	O
</s>
<s>
Okta	B-Application
and	O
LDAP	B-Protocol
options	O
are	O
available	O
for	O
enterprise	O
environments	O
.	O
</s>
<s>
BookStack	B-Protocol
does	O
not	O
have	O
a	O
traditional	O
"	O
Plugin	O
"	O
system	O
,	O
but	O
it	O
does	O
offer	O
a	O
few	O
methods	O
of	O
extension	O
.	O
</s>
<s>
BookStack	B-Protocol
's	O
customization	O
settings	O
provide	O
an	O
input	O
to	O
add	O
custom	O
HTML	O
content	O
to	O
the	O
head	O
of	O
the	O
page	O
,	O
which	O
can	O
then	O
utilize	O
"	O
Editor	O
Events	O
"	O
to	O
customize	O
the	O
page	O
editors	O
.	O
</s>
<s>
A	O
REST	B-Protocol
API	I-Protocol
is	O
built-in	O
,	O
covering	O
CRUD	B-General_Concept
actions	O
for	O
the	O
core	O
content	O
types	O
within	O
BookStack	B-Protocol
.	O
</s>
<s>
A	O
"	O
Logical	O
Theme	O
System	O
"	O
allows	O
back-end	O
PHP-based	O
logical	O
customization	O
without	O
needing	O
to	O
alter	O
core	O
application	O
files	O
.	O
</s>
