<s>
OpenJMS	B-Application
is	O
one	O
of	O
the	O
major	O
providers	O
of	O
Java	B-Language
Message	I-Language
Service	I-Language
API	O
,	O
which	O
implements	O
Sun	O
Microsystems	O
 '	O
Java	B-Language
Message	I-Language
Service	I-Language
API	O
1.1	O
Specification	O
.	O
</s>
<s>
The	O
current	O
release	O
is	O
OpenJMS	B-Application
0.7.7-beta-1	O
.	O
</s>
<s>
Java	B-Language
Message	I-Language
Service	I-Language
is	O
an	O
asynchronous	O
communication	O
mechanism	O
in	O
the	O
distributed	O
system	O
field	O
.	O
</s>
<s>
Another	O
popular	O
distributed	O
communication	O
technology	O
is	O
Remote	B-Operating_System
Method	I-Operating_System
Invocation	I-Operating_System
(	O
RMI	O
)	O
,	O
which	O
is	O
tightly	O
coupled	O
and	O
requires	O
an	O
application	O
to	O
know	O
a	O
remote	O
application	O
's	O
methods	O
.	O
</s>
<s>
One	O
benefit	O
of	O
OpenJMS	B-Application
is	O
that	O
it	O
is	O
vendor	O
neutral	O
.	O
</s>
<s>
Since	O
JMS	O
's	O
are	O
normally	O
released	O
as	O
part	O
of	O
an	O
application	B-Application
server	I-Application
provider	O
this	O
makes	O
the	O
implementation	O
of	O
a	O
JMS	O
vendor	O
specific	O
to	O
that	O
application	B-Application
server	I-Application
.	O
</s>
<s>
OpenJMS	B-Application
is	O
not	O
dependent	O
on	O
any	O
given	O
application	B-Application
server	I-Application
and	O
therefore	O
can	O
be	O
a	O
common	O
interface	O
between	O
users	O
of	O
different	O
vendors	O
.	O
</s>
<s>
Users	O
of	O
various	O
application	B-Application
servers	I-Application
can	O
agree	O
to	O
use	O
the	O
common	O
OpenJMS	B-Application
implementation	O
for	O
their	O
interoperability	O
layers	O
.	O
</s>
