<s>
OTP	O
is	O
a	O
collection	O
of	O
useful	O
middleware	B-General_Concept
,	O
libraries	B-Library
,	O
and	O
tools	B-Application
written	O
in	O
the	O
Erlang	B-Operating_System
programming	I-Operating_System
language	I-Operating_System
.	O
</s>
<s>
It	O
is	O
an	O
integral	O
part	O
of	O
the	O
open-source	B-Application
distribution	O
of	O
Erlang	B-Operating_System
.	O
</s>
<s>
The	O
name	O
OTP	O
was	O
originally	O
an	O
acronym	O
for	O
Open	B-Language
Telecom	I-Language
Platform	I-Language
,	O
which	O
was	O
a	O
branding	O
attempt	O
before	O
Ericsson	O
released	O
Erlang/OTP	B-Operating_System
as	O
open	O
source	O
.	O
</s>
<s>
However	O
neither	O
Erlang	B-Operating_System
nor	O
OTP	O
is	O
specific	O
to	O
telecom	O
applications	O
.	O
</s>
<s>
The	O
OTP	O
distribution	O
is	O
supported	O
and	O
maintained	O
by	O
the	O
OTP	O
product	O
unit	O
at	O
Ericsson	O
,	O
who	O
released	O
Erlang/OTP	B-Operating_System
as	O
open-source	B-Application
in	O
the	O
late	O
90s	O
,	O
to	O
ensure	O
its	O
independence	O
from	O
a	O
single	O
vendor	O
and	O
to	O
increase	O
awareness	O
of	O
the	O
language	O
.	O
</s>
<s>
an	O
Erlang	B-Operating_System
interpreter	B-Application
(	O
which	O
is	O
called	O
BEAM	O
)	O
;	O
</s>
<s>
an	O
Erlang	B-Operating_System
compiler	B-Language
;	O
</s>
<s>
a	O
CORBA	B-Architecture
Object	B-General_Concept
Request	I-General_Concept
Broker	I-General_Concept
;	O
</s>
<s>
many	O
other	O
libraries	B-Library
.	O
</s>
<s>
Originally	O
named	O
Open	O
System	O
,	O
it	O
was	O
started	O
by	O
Ericsson	O
in	O
late	O
1995	O
as	O
a	O
prototype	O
system	O
that	O
aimed	O
to	O
select	O
from	O
a	O
range	O
of	O
appropriate	O
programming	O
technologies	O
and	O
system	O
components	O
,	O
including	O
computers	O
,	O
languages	O
,	O
databases	B-Application
and	O
management	O
systems	O
,	O
to	O
support	O
a	O
remote	O
access	O
system	O
being	O
developed	O
at	O
Ericsson	O
.	O
</s>
<s>
In	O
the	O
same	O
year	O
,	O
following	O
the	O
collapse	O
of	O
another	O
gigantic	O
C++	B-Language
-based	O
project	O
,	O
Open	O
System	O
was	O
ordered	O
to	O
provide	O
support	O
when	O
it	O
restarted	O
from	O
scratch	O
using	O
Erlang	B-Operating_System
.	O
</s>
<s>
Open	O
System	O
system	O
was	O
later	O
named	O
Open	B-Language
Telecom	I-Language
Platform	I-Language
(	O
OTP	O
)	O
when	O
the	O
first	O
prototype	O
was	O
delivered	O
in	O
May	O
1996	O
.	O
</s>
<s>
A	O
key	O
subsystem	O
in	O
OTP	O
is	O
the	O
System	O
Architecture	O
Support	O
Libraries	B-Library
(	O
SASL	O
)	O
,	O
which	O
gave	O
a	O
framework	O
for	O
writing	O
applications	O
.	O
</s>
<s>
Basic	O
Applications	O
-	O
Basic	O
Erlang/OTP	B-Operating_System
functionality	O
.	O
</s>
<s>
Compiler	B-Language
A	O
compiler	B-Language
for	O
Erlang	B-Operating_System
modules	O
.	O
</s>
<s>
Kernel	O
Functionality	O
necessary	O
to	O
run	O
Erlang/OTP	B-Operating_System
itself	O
.	O
</s>
<s>
SASL	O
(	O
System	O
Architecture	O
Support	O
Libraries	B-Library
)	O
A	O
set	O
of	O
tools	B-Application
for	O
code	O
replacement	O
and	O
alarm	O
handling	O
etc	O
.	O
</s>
<s>
Operations	O
and	O
Maintenance	O
-	O
OAM	O
both	O
of	O
the	O
system	O
developed	O
by	O
the	O
user	O
and	O
of	O
Erlang/OTP	B-Operating_System
itself	O
.	O
</s>
<s>
SNMP	O
SNMP	O
support	O
including	O
a	O
MIB	O
compiler	B-Language
and	O
tools	B-Application
for	O
creating	O
SNMP	O
agents	O
.	O
</s>
<s>
GS	O
A	O
graphics	O
system	O
used	O
to	O
write	O
platform	B-Operating_System
independent	I-Operating_System
user	O
interfaces	O
.	O
</s>
<s>
Database	B-Application
Management	I-Application
.	O
</s>
<s>
QLC	O
Query	O
language	O
support	O
for	O
Mnesia	B-General_Concept
DBMS	O
.	O
</s>
<s>
Mnesia	B-General_Concept
A	O
heavy	O
duty	O
real-time	O
distributed	O
database	O
.	O
</s>
<s>
CORBA	B-Architecture
services	O
and	O
IDL	O
compiler	B-Language
.	O
</s>
<s>
Orber	O
A	O
CORBA	B-Architecture
object	B-General_Concept
request	I-General_Concept
broker	I-General_Concept
.	O
</s>
<s>
Tools	B-Application
.	O
</s>
<s>
Debugger	O
For	O
debugging	O
and	O
testing	O
of	O
Erlang	B-Operating_System
programs	O
.	O
</s>
<s>
Parsetools	O
A	O
set	O
of	O
parsing	O
and	O
lexical	O
analysis	O
tools	B-Application
.	O
</s>
<s>
Pman	O
A	O
process	O
manager	O
used	O
to	O
inspect	O
the	O
state	O
of	O
an	O
Erlang/OTP	B-Operating_System
system	O
.	O
</s>
<s>
Runtime_Tools	O
Tools	B-Application
to	O
include	O
in	O
a	O
production	O
system	O
.	O
</s>
<s>
Toolbar	O
A	O
tool	O
bar	O
simplifying	O
access	O
to	O
the	O
Erlang/OTP	B-Operating_System
tools	B-Application
.	O
</s>
<s>
Tools	B-Application
A	O
set	O
of	O
programming	B-Application
tools	I-Application
including	O
a	O
coverage	O
analyzer	O
etc	O
.	O
</s>
<s>
TV	O
An	O
ETS	O
and	O
Mnesia	B-General_Concept
graphical	O
table	O
visualizer	O
.	O
</s>
<s>
As	O
of	O
OTP	O
18.2	O
,	O
the	O
following	O
applications	O
are	O
included	O
in	O
the	O
Erlang/OTP	B-Operating_System
distribution	O
:	O
</s>
