<s>
The	O
BeOS	B-Language
API	I-Language
,	O
often	O
called	O
the	O
Be	B-Language
API	I-Language
after	O
Be	O
Inc.	O
,	O
is	O
the	O
application	B-Application
programming	I-Application
interface	I-Application
required	O
to	O
write	O
graphical	O
native	O
applications	O
on	O
BeOS	B-Application
,	O
and	O
hence	O
its	O
derivatives	O
such	O
as	O
Haiku	B-Language
and	O
ZETA	B-Device
.	O
</s>
<s>
The	O
API	B-Application
is	O
divided	O
into	O
a	O
number	O
of	O
"	O
kits	O
"	O
,	O
which	O
collect	O
related	O
classes	O
together	O
and	O
bear	O
some	O
relation	O
to	O
the	O
library	B-Library
which	O
contains	O
the	O
supporting	O
code	O
.	O
</s>
<s>
It	O
is	O
almost	O
entirely	O
C++	B-Language
,	O
with	O
third-party	O
bindings	O
for	O
most	O
classes	O
in	O
Python	B-Language
and	O
a	O
tiny	O
subset	O
of	O
classes	O
,	O
mostly	O
Storage	O
kit	O
related	O
,	O
in	O
Perl	B-Language
.	O
</s>
<s>
The	O
Application	O
kit	O
contains	O
the	O
basic	O
classes	O
required	O
to	O
launch	O
a	O
BeOS	B-Application
application	O
,	O
as	O
well	O
as	O
support	O
for	O
the	O
global	O
clipboard	O
,	O
inter-application	O
and	O
internal	O
messaging	O
,	O
timers	O
,	O
rosters	O
and	O
other	O
functions	O
seen	O
as	O
required	O
to	O
support	O
any	O
graphical	O
application	O
.	O
</s>
<s>
The	O
Storage	O
kit	O
provides	O
methods	O
related	O
to	O
access	O
to	O
the	O
file	O
system	O
,	O
including	O
manipulating	O
files	O
,	O
navigating	O
the	O
file	O
system	O
hierarchy	O
,	O
creating	O
and	O
managing	O
symlinks	B-Application
,	O
dealing	O
with	O
file	O
open/save	O
panels	O
for	O
graphical	O
applications	O
,	O
as	O
well	O
as	O
dealing	O
with	O
Be	B-Language
File	I-Language
System	I-Language
attributes	O
.	O
</s>
<s>
Storage	O
kit	O
classes	O
are	O
mostly	O
in	O
libtracker.so,	O
Tracker	B-Language
being	O
the	O
native	O
file	O
manager	O
on	O
the	O
OS	O
.	O
</s>
<s>
In	O
the	O
Haiku	B-Language
version	O
of	O
the	O
API	B-Application
,	O
it	O
adds	O
the	O
Layout	O
API	B-Application
,	O
that	O
provides	O
tools	O
to	O
design	O
user	O
interfaces	O
.	O
</s>
<s>
The	O
Kernel	O
kit	O
provides	O
threading	B-Operating_System
,	O
semaphores	B-Operating_System
and	O
the	O
ability	O
to	O
access	O
system	O
information	O
,	O
and	O
is	O
also	O
in	O
libbe.so	O
.	O
</s>
<s>
The	O
Network	O
kit	O
provides	O
either	O
a	O
rudimentary	O
(	O
BeOS	B-Device
R5	I-Device
and	O
lower	O
)	O
or	O
almost	O
complete	O
(	O
BeOS	B-Device
Dano	I-Device
and	O
higher	O
)	O
implementation	O
of	O
Berkeley	B-Protocol
sockets	I-Protocol
and	O
BIND	B-Protocol
as	O
well	O
as	O
"	O
native	O
"	O
functions	O
based	O
on	O
the	O
Nettle	O
C++	B-Language
networking	O
library	B-Library
.	O
</s>
<s>
libnet.so	O
provides	O
the	O
Berkeley	B-Protocol
sockets	I-Protocol
on	O
R5	O
,	O
later	O
replaced	O
by	O
the	O
more	O
common	O
libsocket/libbind.so	O
nomenclature	O
;	O
and	O
libnetapi	O
on	O
R5	O
,	O
later	O
replaced	O
by	O
libbnetapi	O
provides	O
the	O
modified	O
version	O
of	O
Nettle	O
.	O
</s>
<s>
The	O
Mail	O
kit	O
provides	O
a	O
native	O
email	O
format	O
as	O
well	O
as	O
a	O
way	O
to	O
use	O
the	O
system	O
to	O
fetch	O
and	O
receive	O
email	O
using	O
standard	O
protocols	O
(	O
POP3	B-Protocol
and	O
SMTP	B-Protocol
)	O
.	O
</s>
<s>
The	O
API	B-Application
also	O
allows	O
video	O
and	O
audio	O
translation	O
through	O
the	O
library	B-Library
,	O
although	O
this	O
was	O
superseded	O
by	O
BeOS	B-Application
R4	O
and	O
immediately	O
disabled	O
.	O
</s>
<s>
The	O
MIDI	O
kit	O
provides	O
MIDI	O
hardware	O
input	O
and	O
output	O
abstraction	O
as	O
well	O
as	O
a	O
software	O
synthesiser	O
(	O
provided	O
by	O
Headspace	O
in	O
BeOS	B-Device
R5	I-Device
)	O
.	O
</s>
<s>
libmidi.so	O
provides	O
the	O
old	O
,	O
BeOS	B-Application
R3	O
era	O
MIDI	O
API	B-Application
,	O
libmidi2.so	O
provides	O
the	O
R4+	O
API	B-Application
.	O
</s>
<s>
The	O
OpenGL	B-Application
kit	O
provides	O
an	O
implementation	O
of	O
OpenGL	B-Application
as	O
well	O
as	O
supporting	O
classes	O
to	O
allow	O
its	O
use	O
in	O
native	O
applications	O
.	O
</s>
<s>
In	O
BeOS	B-Device
R5	I-Device
,	O
the	O
supported	O
OpenGL	B-Application
version	O
was	O
1.1	O
,	O
and	O
was	O
software	O
accelerated	O
,	O
although	O
the	O
kit	O
was	O
hardware-neutral	O
,	O
and	O
in	O
fact	O
outperformed	O
many	O
hardware	O
implementations	O
that	O
were	O
running	O
on	O
competing	O
platforms	O
which	O
could	O
not	O
deliver	O
similar	O
latency/bandwidth	O
performance	O
due	O
to	O
underlying	O
inefficiencies	O
in	O
their	O
design	O
or	O
implementation	O
.	O
</s>
<s>
The	O
Device	O
kit	O
provides	O
platform-abstracted	O
direct	O
hardware	O
access	O
to	O
serial	O
and	O
parallel	O
ports	O
,	O
as	O
well	O
as	O
the	O
BeBox	B-Device
's	O
infamous	O
GeekPort	B-Device
.	O
</s>
<s>
The	O
kit	O
is	O
only	O
found	O
in	O
the	O
Haiku	B-Language
implementation	O
of	O
the	O
BeOS	B-Language
API	I-Language
.	O
</s>
<s>
The	O
kit	O
is	O
only	O
found	O
in	O
the	O
Haiku	B-Language
implementation	O
of	O
the	O
BeOS	B-Language
API	I-Language
.	O
</s>
<s>
The	O
Web	B-Language
Kit	I-Language
provides	O
means	O
of	O
rendering	O
web	O
pages	O
and	O
is	O
a	O
fork	O
of	O
the	O
Apple	O
's	O
WebKit	B-Language
.	O
</s>
<s>
The	O
kit	O
is	O
only	O
found	O
in	O
the	O
Haiku	B-Language
implementation	O
of	O
the	O
BeOS	B-Language
API	I-Language
.	O
</s>
<s>
The	O
Package	O
Kit	O
provides	O
an	O
application	B-Application
programming	I-Application
interface	I-Application
aimed	O
to	O
develop	O
package	O
management	O
tasks	O
,	O
including	O
reading	O
and	O
writing	O
Haiku	B-Language
packages	O
files	O
,	O
software	O
repositories	O
management	O
tasks	O
such	O
as	O
adding	O
,	O
removing	O
and	O
querying	O
repositories	O
,	O
and	O
package	O
management	O
operations	O
such	O
as	O
installation	O
,	O
removal	O
,	O
updates	O
and	O
package	O
dependencies	O
solving	O
.	O
</s>
<s>
The	O
kit	O
is	O
only	O
found	O
in	O
the	O
Haiku	B-Language
implementation	O
of	O
the	O
BeOS	B-Language
API	I-Language
.	O
</s>
<s>
The	O
majority	O
of	O
the	O
Be	B-Language
API	I-Language
has	O
been	O
reimplemented	O
by	O
Haiku	B-Language
for	O
their	O
open-source	O
BeOS	B-Application
replacement	O
,	O
although	O
in	O
an	O
effort	O
to	O
catch	O
up	O
with	O
the	O
intervening	O
years	O
since	O
BeOS	B-Device
R5	I-Device
some	O
additional	O
functionality	O
has	O
been	O
added	O
,	O
ranging	O
from	O
large	O
changes	O
to	O
the	O
Mail	O
kit	O
to	O
support	O
IMAP	B-Protocol
,	O
encrypted	O
connections	O
and	O
multiple	O
accounts	O
,	O
and	O
a	O
move	O
to	O
OpenGL	B-Application
1.5	O
support	O
via	O
Mesa	B-Application
3D	I-Application
.	O
</s>
<s>
Alternative	O
systems	O
have	O
attempted	O
to	O
draw	O
some	O
inspiration	O
(	O
Syllable	B-Application
)	O
from	O
the	O
BeOS	B-Language
API	I-Language
,	O
but	O
are	O
not	O
making	O
attempts	O
to	O
provide	O
a	O
base	O
to	O
port	O
applications	O
.	O
</s>
<s>
A	O
private	O
port	O
of	O
much	O
of	O
the	O
API	B-Application
to	O
Microsoft	O
Windows	O
and	O
later	O
Linux	B-Application
(	O
using	O
GTK+	B-Application
)	O
was	O
done	O
by	O
Gobe	O
Software	O
to	O
enable	O
them	O
to	O
port	O
their	O
Gobe	O
Productive	O
office	O
suite	O
to	O
these	O
platforms	O
from	O
BeOS	B-Application
,	O
where	O
it	O
had	O
originally	O
been	O
developed	O
.	O
</s>
<s>
The	O
entire	O
API	B-Application
,	O
as	O
it	O
was	O
at	O
the	O
stage	O
of	O
BeOS	B-Application
Revision	O
3	O
,	O
was	O
documented	O
in	O
two	O
paper	O
books	O
-	O
the	O
Be	O
Developer	O
Guide	O
and	O
Be	O
Advanced	O
Topics	O
,	O
released	O
by	O
O'Reilly	O
Media	O
under	O
a	O
Be	O
,	O
Inc	O
imprint	O
in	O
1997/8	O
.	O
</s>
<s>
In	O
addition	O
,	O
a	O
digital	O
representation	O
of	O
this	O
was	O
provided	O
and	O
updated	O
with	O
BeOS	B-Application
itself	O
.	O
</s>
