<s>
Evergreen	B-Language
is	O
an	O
open-source	B-Application
integrated	O
library	O
system	O
(	O
ILS	O
)	O
,	O
initially	O
developed	O
by	O
the	O
Georgia	O
Public	O
Library	O
Service	O
for	O
Public	O
Information	O
Network	O
for	O
Electronic	O
Services	O
(	O
PINES	O
)	O
,	O
a	O
statewide	O
resource-sharing	O
consortium	O
with	O
over	O
270	O
member	O
libraries	O
.	O
</s>
<s>
Beyond	O
PINES	O
,	O
the	O
Evergreen	B-Language
ILS	O
is	O
deployed	O
worldwide	O
in	O
approximately	O
1,800	O
libraries	O
,	O
and	O
is	O
used	O
to	O
power	O
a	O
number	O
of	O
statewide	O
consortial	O
catalogs	O
.	O
</s>
<s>
In	O
2007	O
,	O
the	O
original	O
Evergreen	B-Language
development	O
team	O
formed	O
a	O
commercial	O
company	O
around	O
the	O
software	O
,	O
Equinox	O
Software	O
,	O
which	O
provides	O
custom	O
support	O
,	O
development	O
,	O
migration	O
,	O
training	O
,	O
and	O
consultation	O
for	O
Evergreen	B-Language
.	O
</s>
<s>
As	O
of	O
2014	O
,	O
several	O
more	O
companies	O
and	O
groups	O
also	O
provide	O
support	O
and	O
related	O
services	O
for	O
Evergreen	B-Language
.	O
</s>
<s>
Evergreen	B-Language
was	O
developed	O
by	O
the	O
Georgia	O
Public	O
Library	O
Service	O
(	O
GPLS	B-License
)	O
to	O
support	O
252	O
public	O
libraries	O
in	O
the	O
Public	O
Information	O
Network	O
for	O
Electronic	O
Services	O
(	O
PINES	O
)	O
consortium	O
.	O
</s>
<s>
Development	O
began	O
in	O
June	O
2004	O
when	O
state	O
librarian	O
Lamar	O
Veatch	O
announced	O
in	O
an	O
open	O
letter	O
that	O
after	O
reviewing	O
options	O
available	O
,	O
GPLS	B-License
decided	O
to	O
develop	O
its	O
own	O
library	O
automation	O
system	O
.	O
</s>
<s>
GPLS	B-License
believed	O
it	O
could	O
develop	O
a	O
system	O
customized	O
to	O
fit	O
its	O
needs	O
better	O
at	O
a	O
lower	O
cost	O
than	O
the	O
fees	O
currently	O
being	O
paid	O
.	O
</s>
<s>
Programmers	O
in	O
the	O
GPLS	B-License
developed	O
the	O
project	O
for	O
two	O
years	O
,	O
and	O
PINES	O
successfully	O
completed	O
the	O
transition	O
to	O
Evergreen	B-Language
on	O
September	O
5	O
,	O
2006	O
.	O
</s>
<s>
In	O
the	O
next	O
two	O
years	O
,	O
the	O
PINES	O
consortium	O
increased	O
to	O
over	O
270	O
libraries	O
and	O
five	O
other	O
systems	O
in	O
the	O
United	O
States	O
and	O
Canada	O
implemented	O
Evergreen	B-Language
.	O
</s>
<s>
2009	O
saw	O
the	O
first	O
Evergreen	B-Language
International	O
Conference	O
.	O
</s>
<s>
In	O
2019	O
the	O
Evergreen	B-Language
Community	O
elected	O
an	O
Evergreen	B-Language
Project	O
board	O
as	O
part	O
of	O
their	O
transition	O
to	O
a	O
stand-alone	O
non-profit	O
organization	O
.	O
</s>
<s>
Other	O
Evergreen	B-Language
implementations	O
in	O
North	O
America	O
:	O
</s>
<s>
Development	O
priorities	O
for	O
Evergreen	B-Language
are	O
that	O
it	O
be	O
stable	O
,	O
robust	O
,	O
flexible	O
,	O
secure	O
,	O
and	O
user-friendly	O
.	O
</s>
<s>
Evergreen	B-Language
's	O
features	O
include	O
:	O
</s>
<s>
Cataloging	B-Library
:	O
to	O
add	O
items	O
to	O
the	O
library	O
's	O
collection	O
and	O
input	O
information	O
,	O
classifying	O
and	O
indexing	O
those	O
items	O
.	O
</s>
<s>
Evergreen	B-Language
is	O
known	O
for	O
an	O
extremely	O
flexible	O
indexing	O
system	O
that	O
allows	O
for	O
a	O
high	O
level	O
of	O
customization	O
and	O
by	O
default	O
uses	O
Library	O
of	O
Congress	O
MODS	O
as	O
its	O
standard	O
.	O
</s>
<s>
Online	O
public	O
access	O
catalog	O
:	O
a	O
public	O
catalog	O
,	O
or	O
discovery	O
interface	O
,	O
for	O
patrons	O
to	O
find	O
and	O
request	O
books	O
,	O
view	O
their	O
account	O
information	O
,	O
and	O
save	O
book	O
information	O
in	O
Evergreen	B-Language
lists	O
.	O
</s>
<s>
Self	O
Service	O
-	O
Evergreen	B-Language
comes	O
with	O
self	O
checkout	O
and	O
registration	O
options	O
that	O
can	O
be	O
activated	O
by	O
the	O
libraries	O
.	O
</s>
<s>
SIP	B-Protocol
2.0	I-Protocol
support	O
:	O
for	O
interaction	O
with	O
computer	O
management	O
software	O
,	O
self-check	O
machines	O
,	O
and	O
other	O
applications	O
.	O
</s>
<s>
Evergreen	B-Language
also	O
features	O
the	O
Open	O
Scalable	O
Request	O
Framework	O
(	O
OpenSRF	O
,	O
pronounced	O
'	O
open	O
surf	O
 '	O
)	O
,	O
a	O
stateful	O
,	O
decentralized	O
service	O
architecture	O
that	O
allows	O
developers	O
to	O
create	O
applications	O
for	O
Evergreen	B-Language
with	O
a	O
minimum	O
of	O
knowledge	O
of	O
its	O
structure	O
.	O
</s>
<s>
The	O
business	O
logic	O
of	O
Evergreen	B-Language
is	O
written	O
primarily	O
in	O
Perl	B-Language
and	O
PostgreSQL	B-Application
,	O
with	O
a	O
few	O
optimized	O
sections	O
rewritten	O
in	O
C	B-Language
.	O
The	O
catalog	O
interface	O
is	O
primarily	O
constructed	O
using	O
Template	B-Language
Toolkit	I-Language
with	O
some	O
JavaScript	B-Language
.	O
</s>
<s>
The	O
staff	O
client	O
user	O
interface	O
is	O
written	O
in	O
Mozilla	O
's	O
XUL	B-Application
(	O
XML	B-Protocol
+	O
JavaScript	B-Language
)	O
before	O
3.0	O
and	O
is	O
a	O
web	O
based	O
staff	O
client	O
built	O
using	O
AngularJS	O
and	O
related	O
technologies	O
as	O
of	O
3.0	O
.	O
</s>
<s>
Python	B-Language
is	O
used	O
for	O
the	O
internationalization	O
build	O
infrastructure	O
.	O
</s>
<s>
EDI	O
functionality	O
for	O
the	O
acquisitions	O
system	O
prior	O
to	O
3.0	O
depended	O
upon	O
Ruby	B-Language
but	O
no	O
longer	O
does	O
.	O
</s>
<s>
Evergreen	B-Language
runs	O
on	O
Linux	B-Application
servers	O
and	O
uses	O
PostgreSQL	B-Application
for	O
its	O
backend	O
database	O
.	O
</s>
<s>
The	O
staff	O
client	O
used	O
in	O
day-to-day	O
operations	O
by	O
library	O
staff	O
runs	O
on	O
Microsoft	B-Application
Windows	I-Application
,	O
Macintosh	B-Device
,	O
or	O
Linux	B-Application
computers	O
and	O
is	O
built	O
on	O
XULRunner	B-Language
,	O
a	O
Mozilla-based	O
runtime	O
that	O
uses	O
the	O
same	O
technology	O
stack	O
as	O
Firefox	B-Application
and	O
allows	O
for	O
a	O
browser-independent	O
offline	O
mode	O
.	O
</s>
<s>
The	O
online	O
public	O
access	O
catalog	O
(	O
OPAC	O
)	O
used	O
by	O
library	O
patrons	O
is	O
accessed	O
in	O
a	O
Web	B-Application
browser	I-Application
.	O
</s>
<s>
As	O
of	O
version	O
3.0	O
the	O
web	O
based	O
staff	O
client	O
was	O
promoted	O
to	O
production	O
use	O
and	O
the	O
XUL	B-Application
based	O
staff	O
client	O
that	O
required	O
local	O
machine	O
installation	O
began	O
being	O
phased	O
out	O
.	O
</s>
