<s>
Open	B-Protocol
Journal	I-Protocol
Systems	I-Protocol
,	O
also	O
known	O
as	O
OJS	B-Protocol
,	O
is	O
an	O
open	B-License
source	I-License
and	O
free	B-Application
software	I-Application
for	O
the	O
management	O
of	O
peer-reviewed	O
academic	O
journals	O
,	O
created	O
by	O
the	O
Public	O
Knowledge	O
Project	O
,	O
and	O
released	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Open	B-Protocol
Journal	I-Protocol
Systems	I-Protocol
(	O
OJS	B-Protocol
)	O
was	O
conceived	O
to	O
facilitate	O
the	O
development	O
of	O
open	O
access	O
,	O
peer-reviewed	O
publishing	O
,	O
providing	O
the	O
technical	O
infrastructure	O
for	O
the	O
presentation	O
of	O
journal	O
articles	O
along	O
with	O
an	O
editorial-management	O
workflow	O
,	O
including	O
article	O
submission	O
,	O
peer-review	O
,	O
and	O
indexing	O
.	O
</s>
<s>
OJS	B-Protocol
relies	O
upon	O
individuals	O
fulfilling	O
different	O
roles	O
,	O
such	O
as	O
journal	O
manager	O
,	O
editor	O
,	O
reviewer	O
,	O
author	O
,	O
and	O
reader	O
.	O
</s>
<s>
Like	O
other	O
community-based	O
projects	O
such	O
as	O
WordPress	B-Application
,	O
the	O
software	O
has	O
a	O
plugin	O
architecture	O
,	O
which	O
allows	O
new	O
features	O
to	O
be	O
integrated	O
without	O
changing	O
its	O
core	O
codebase	B-General_Concept
.	O
</s>
<s>
Available	O
plugins	O
facilitate	O
indexing	O
in	O
Google	B-Library
Scholar	I-Library
and	O
PubMed	O
Central	O
,	O
publishing	O
RSS/Atom	O
web	O
syndication	O
feeds	O
,	O
and	O
providing	O
COUNTER	O
statistics	O
about	O
online	O
usage	O
,	O
several	O
plugins	O
are	O
curated	O
and	O
directly	O
available	O
for	O
download	O
through	O
its	O
plugin	O
gallery	O
interface	O
.	O
</s>
<s>
OJS	B-Protocol
is	O
also	O
LOCKSS-compliant	O
,	O
which	O
helps	O
ensure	O
ongoing	O
access	O
to	O
journal	O
contents	O
.	O
</s>
<s>
Third-party	O
plugins	O
include	O
Reading	O
Tools	O
,	O
which	O
point	O
readers	O
to	O
related	O
studies	O
,	O
media	O
stories	O
,	O
and	O
policy	O
documents	O
in	O
open	O
access	O
databases	O
,	O
the	O
,	O
which	O
forces	O
the	O
users	O
to	O
use	O
strong	O
passwords	O
,	O
and	O
many	O
others	O
freely	O
available	O
in	O
GitHub	B-Application
.	O
</s>
<s>
OJS	B-Protocol
also	O
provides	O
,	O
which	O
might	O
be	O
added	O
to	O
the	O
installation	O
through	O
its	O
plugin	O
gallery	O
and	O
a	O
to	O
experiment	O
its	O
features	O
.	O
</s>
<s>
OJS	B-Protocol
is	O
currently	O
in	O
its	O
3.3.0-14	O
version	O
,	O
released	O
in	O
February	O
2023	O
,	O
and	O
its	O
first	O
version	O
was	O
originally	O
released	O
in	O
2001	O
.	O
</s>
<s>
The	O
software	O
is	O
written	O
in	O
PHP	B-Application
,	O
currently	O
supports	O
two	O
databases	O
,	O
MySQL/MariaDB	O
and	O
PostgreSQL	B-Application
,	O
and	O
can	O
be	O
hosted	O
on	O
a	O
Unix-like	B-Operating_System
or	O
Windows	B-Application
web	O
server	O
.	O
</s>
<s>
Note	O
:	O
OJS	B-Protocol
2	O
has	O
reached	O
its	O
end	O
of	O
life	O
in	O
2021	O
,	O
its	O
latest	O
release	O
was	O
the	O
version	O
2.4.8-5	O
,	O
released	O
in	O
May	O
2019	O
.	O
</s>
<s>
As	O
of	O
mid-2021	O
,	O
OJS	B-Protocol
was	O
being	O
used	O
by	O
at	O
least	O
25,000	O
journals	O
worldwide	O
.	O
</s>
<s>
OJS	B-Protocol
,	O
as	O
well	O
as	O
the	O
Érudit	O
publishing	O
system	O
,	O
is	O
being	O
used	O
in	O
the	O
Synergies	O
project	O
,	O
creating	O
a	O
scholarly	O
portal	O
for	O
Canadian	O
social	O
sciences	O
and	O
humanities	O
research	O
.	O
</s>
<s>
OJS	B-Protocol
is	O
also	O
being	O
used	O
for	O
research	O
portals	O
in	O
Brazil	O
,	O
Spain	O
,	O
Italy	O
,	O
and	O
Greece	O
.	O
</s>
<s>
OJS	B-Protocol
hosting	O
service	O
is	O
offered	O
for	O
a	O
fee	O
by	O
the	O
(	O
PKP-operated	O
Publishing	O
Services	O
)	O
,	O
as	O
well	O
as	O
a	O
variety	O
of	O
third-party	O
commercial	O
and	O
non-commercial	O
service	O
providers	O
not	O
affiliated	O
with	O
PKP	O
.	O
</s>
<s>
PKP	O
has	O
also	O
released	O
a	O
in	O
GitHub	B-Application
,	O
which	O
may	O
be	O
helpful	O
to	O
spin-up	O
an	O
OJS	B-Protocol
instance	O
without	O
having	O
to	O
deal	O
with	O
the	O
web	O
server	O
,	O
database	O
and	O
PHP	B-Application
installation	O
.	O
</s>
