<s>
xTuple	B-Application
is	O
an	O
enterprise	B-Application
software	I-Application
company	O
that	O
develops	O
and	O
markets	O
software	B-Application
under	O
the	O
brand	O
name	O
xTuple	B-Application
ERP	O
.	O
</s>
<s>
The	O
company	O
was	O
originally	O
formed	O
in	O
2001	O
as	O
OpenMFG	O
and	O
rebranded	O
as	O
xTuple	B-Application
in	O
2007	O
.	O
</s>
<s>
xTuple	B-Application
began	O
under	O
the	O
name	O
OpenMFG	O
,	O
developing	O
its	O
product	O
of	O
the	O
same	O
name	O
beginning	O
in	O
the	O
year	O
2001	O
.	O
</s>
<s>
Unlike	O
open	O
source	O
software	B-Application
,	O
however	O
,	O
the	O
code	O
was	O
not	O
made	O
publicly	O
available	O
.	O
</s>
<s>
The	O
project	O
was	O
originally	O
to	O
be	O
released	O
under	O
the	O
"	O
xTuple	B-Application
License	O
,	O
"	O
a	O
derivative	O
of	O
the	O
Mozilla	B-License
Public	I-License
License	I-License
,	O
but	O
xTuple	B-Application
was	O
quickly	O
criticized	O
for	O
introducing	O
"	O
yet	O
another	O
"	O
open	O
source	O
license	O
variant	O
.	O
</s>
<s>
However	O
,	O
at	O
that	O
very	O
same	O
conference	O
SocialText	O
announced	O
the	O
release	O
of	O
the	O
new	O
Open	O
Source	O
Initiative	O
approved	O
Common	B-License
Public	I-License
Attribution	I-License
License	I-License
(	O
CPAL	B-License
)	O
.	O
</s>
<s>
Two	O
days	O
later	O
xTuple	B-Application
switched	O
PostBooks	O
to	O
CPAL	B-License
and	O
became	O
the	O
second	O
company	O
to	O
adopt	O
this	O
license	O
.	O
</s>
<s>
In	O
an	O
announcement	O
made	O
by	O
xTuple	B-Application
's	O
CEO	O
,	O
xTuple	B-Application
has	O
discontinued	O
offering	O
any	O
products	O
under	O
an	O
open	O
source	O
license	O
and	O
,	O
now	O
,	O
distributes	O
its	O
products	O
under	O
a	O
commercial	O
software	B-Application
license	O
,	O
unique	O
in	O
that	O
it	O
claims	O
full	O
rights	O
over	O
any	O
modifications	O
made	O
to	O
xTuple	B-Application
products	O
by	O
its	O
customers	O
.	O
</s>
<s>
The	O
Distribution	O
,	O
Manufacturing	O
,	O
and	O
Enterprise	O
Editions	O
of	O
xTuple	B-Application
are	O
commercially	O
licensed	O
Enterprise	O
resource	O
planning	O
solutions	O
.	O
</s>
<s>
xTuple	B-Application
ERP	O
provides	O
multiple	O
interface	O
options	O
including	O
a	O
locally	O
installable	O
GUI	B-Application
client	O
application	O
,	O
a	O
web	O
client	O
,	O
and	O
a	O
web	O
services	O
API	B-Application
for	O
third	O
party	O
application	O
integration	O
.	O
</s>
<s>
The	O
GUI	B-Application
client	O
is	O
written	O
in	O
Qt	B-Language
,	O
a	O
C++	B-Language
toolkit	O
for	O
application	O
development	O
.	O
</s>
<s>
It	O
lets	O
application	O
developers	O
target	O
all	O
major	O
operating	O
systems	O
(	O
Windows	B-Application
,	O
Linux/Unix	O
,	O
Mac	B-Application
)	O
with	O
a	O
single	O
application	O
source	O
code	O
.	O
</s>
<s>
Qt	B-Language
provides	O
a	O
platform-independent	O
API	B-Application
to	O
all	O
central	O
platform	O
functionality	O
:	O
GUI	B-Application
,	O
database	O
access	O
,	O
networking	O
,	O
file	O
handling	O
,	O
etc	O
.	O
</s>
<s>
The	O
Qt	B-Language
library	I-Language
encapsulates	O
the	O
different	O
APIs	B-Application
of	O
different	O
operating	O
systems	O
,	O
providing	O
the	O
application	O
programmer	O
with	O
a	O
single	O
,	O
common	O
API	B-Application
for	O
all	O
operating	O
systems	O
.	O
</s>
<s>
The	O
native	O
C	B-Language
APIs	B-Application
are	O
encapsulated	O
in	O
a	O
set	O
of	O
object-oriented	O
C++	B-Language
classes	O
.	O
</s>
<s>
This	O
web	O
client	O
was	O
built	O
entirely	O
in	O
JavaScript	B-Language
using	O
the	O
Enyo	B-Language
framework	O
for	O
presentation	O
and	O
Backbone.js	B-Language
for	O
model	O
handling	O
.	O
</s>
<s>
The	O
web	O
client	O
application	O
is	O
served	O
by	O
a	O
NodeJS	B-Language
server	O
,	O
which	O
also	O
provides	O
a	O
REST	O
based	O
web	O
services	O
API	B-Application
that	O
can	O
be	O
used	O
for	O
third	O
party	O
integration	O
.	O
</s>
<s>
xTuple	B-Application
uses	O
the	O
PostgreSQL	B-Application
database	O
exclusively	O
for	O
storing	O
and	O
managing	O
data	O
.	O
</s>
<s>
The	O
GUI	B-Application
client	O
relies	O
heavily	O
on	O
PostgreSQL	B-Application
's	O
native	O
procedural	O
language	O
(	O
PL/pgSQL	B-Language
)	O
functions	O
to	O
process	O
business	O
logic	O
,	O
while	O
the	O
web	O
client	O
and	O
node	O
layers	O
leverage	O
additional	O
capability	O
made	O
possible	O
by	O
the	O
integration	O
of	O
Google	B-Application
's	I-Application
V8	B-Language
JavaScript	I-Language
engine	I-Language
into	O
the	O
database	O
using	O
an	O
extension	O
.	O
</s>
<s>
xTuple	B-Application
has	O
written	O
an	O
Object-relational	B-General_Concept
mapping	I-General_Concept
system	O
embedded	O
in	O
the	O
database	O
using	O
JavaScript	B-Language
that	O
processes	O
all	O
reads	O
and	O
transaction	O
requests	O
made	O
via	O
the	O
NodeJS	B-Language
server	O
.	O
</s>
