<s>
Apple	B-Operating_System
Developer	I-Operating_System
(	O
formerly	O
Apple	B-Operating_System
Developer	I-Operating_System
Connection	I-Operating_System
)	O
is	O
Apple	O
Inc.	O
'	O
s	O
website	O
for	O
software	B-Application
development	O
tools	O
,	O
application	B-Application
programming	I-Application
interfaces	I-Application
(	O
APIs	B-Application
)	O
,	O
and	O
technical	O
resources	O
.	O
</s>
<s>
It	O
contains	O
resources	O
to	O
help	O
software	B-Application
developers	I-Application
write	O
software	B-Application
for	O
the	O
macOS	B-Application
,	O
iOS	B-Application
,	O
iPadOS	B-Operating_System
,	O
watchOS	B-Device
,	O
and	O
tvOS	B-Operating_System
platforms	O
.	O
</s>
<s>
The	O
applications	O
are	O
created	O
in	O
Xcode	B-Operating_System
,	O
or	O
sometimes	O
using	O
other	O
supported	O
3rd	O
party	O
programs	O
.	O
</s>
<s>
The	O
apps	B-Application
can	O
then	O
be	O
submitted	O
to	O
App	B-Application
Store	I-Application
Connect	I-Application
(	O
formerly	O
iTunes	O
Connect	O
)	O
,	O
another	O
one	O
of	O
Apple	O
's	O
website	O
for	O
approval	O
the	O
internal	O
review	O
team	O
.	O
</s>
<s>
Once	O
approved	O
,	O
they	O
can	O
be	O
distributed	O
publicly	O
via	O
the	O
respective	O
app	B-Application
stores	I-Application
,	O
i.e.	O
</s>
<s>
App	B-Application
Store	I-Application
(	O
iOS	B-Application
)	O
for	O
iOS	B-Application
and	O
iPadOS	B-Operating_System
apps	B-Application
,	O
iMessage	O
app	B-Application
store	I-Application
for	O
Messages	O
apps	B-Application
and	O
Sticker	O
pack	O
apps	B-Application
,	O
App	B-Application
Store	I-Application
(	O
tvOS	B-Operating_System
)	O
for	O
Apple	O
TV	O
apps	B-Application
,	O
watchOS	B-Device
app	B-Application
store	I-Application
for	O
Apple	O
Watch	O
apps	B-Application
with	O
watchOS	B-Device
6	O
and	O
later	O
,	O
and	O
via	O
App	B-Application
Store	I-Application
(	O
iOS	B-Application
)	O
for	O
earlier	O
versions	O
of	O
watchOS	B-Device
.	O
</s>
<s>
macOS	B-Application
apps	B-Application
are	O
a	O
notable	O
exception	O
to	O
this	O
,	O
as	O
they	O
can	O
be	O
distributed	O
similarly	O
via	O
Apple	O
's	O
Mac	B-Application
App	I-Application
Store	I-Application
or	O
independently	O
on	O
the	O
World	O
Wide	O
Web	O
.	O
</s>
<s>
The	O
Mac	O
developer	B-Application
program	I-Application
is	O
a	O
way	O
for	O
developers	B-Application
of	O
Apple	O
's	O
macOS	B-Application
operating	O
system	O
to	O
distribute	O
their	O
apps	B-Application
through	O
the	O
Mac	B-Application
App	I-Application
Store	I-Application
.	O
</s>
<s>
Unlike	O
iOS	B-Application
,	O
developers	B-Application
are	O
not	O
required	O
to	O
sign	O
up	O
for	O
the	O
program	O
in	O
order	O
to	O
distribute	O
their	O
applications	O
.	O
</s>
<s>
Mac	O
applications	O
can	O
freely	O
be	O
distributed	O
via	O
the	O
developer	B-Application
's	O
website	O
and/or	O
any	O
other	O
method	O
of	O
distribution	O
excluding	O
the	O
Mac	B-Application
App	I-Application
Store	I-Application
.	O
</s>
<s>
The	O
Mac	O
Developer	B-Application
Program	I-Application
also	O
provides	O
developers	B-Application
with	O
resources	O
to	O
help	O
them	O
distribute	O
their	O
Mac	O
applications	O
.	O
</s>
<s>
There	O
have	O
been	O
several	O
leaks	O
of	O
secret	O
Apple	B-Application
software	I-Application
through	O
the	O
prerelease	O
program	O
,	O
most	O
notably	O
the	O
Mac	B-Application
OS	I-Application
X	I-Application
10.4	I-Application
Tiger	I-Application
leaks	O
,	O
in	O
which	O
Apple	O
sued	O
three	O
men	O
who	O
allegedly	O
obtained	O
advance	O
copies	O
of	O
Mac	B-Application
OS	I-Application
X	I-Application
10.4	I-Application
prerelease	O
builds	O
from	O
the	O
site	O
and	O
leaked	O
it	O
to	O
BitTorrent	B-Protocol
.	O
</s>
<s>
On	O
July	O
18	O
,	O
2013	O
,	O
an	O
intruder	O
attempted	O
to	O
access	O
sensitive	O
personal	O
information	O
on	O
Apple	O
's	O
developer	B-Application
servers	O
.	O
</s>
<s>
The	O
information	O
was	O
encrypted	O
,	O
but	O
Apple	O
could	O
not	O
guarantee	O
that	O
some	O
information	O
about	O
developers	B-Application
may	O
have	O
been	O
accessed	O
.	O
</s>
<s>
The	O
Developer	B-Application
website	O
was	O
taken	O
down	O
for	O
"	O
maintenance	O
"	O
that	O
Thursday	O
,	O
and	O
was	O
said	O
to	O
be	O
undergoing	O
maintenance	O
through	O
Sunday	O
,	O
when	O
Apple	O
posted	O
a	O
notice	O
on	O
the	O
site	O
notifying	O
users	O
of	O
the	O
attempted	O
hack	O
.	O
</s>
<s>
They	O
have	O
stated	O
that	O
they	O
will	O
be	O
rebuilding	O
their	O
servers	O
and	O
the	O
developer	B-Application
system	O
to	O
prevent	O
this	O
from	O
happening	O
in	O
the	O
future	O
.	O
</s>
<s>
Apple	O
provides	O
free	O
tutorials	O
and	O
guide	O
support	O
for	O
their	O
developer	B-Application
program	I-Application
.	O
</s>
<s>
In	O
the	O
beginning	O
of	O
July	O
,	O
Apple	O
finished	O
construction	O
on	O
their	O
Developer	B-Application
Center	O
in	O
Cupertino	O
,	O
California	O
.	O
</s>
<s>
During	O
special	O
events	O
,	O
developers	B-Application
are	O
able	O
to	O
visit	O
the	O
center	O
for	O
one-on-one	O
’	O
s	O
with	O
Apple	O
employees	O
,	O
demos	O
of	O
upcoming	O
software	B-Application
,	O
and	O
more	O
.	O
</s>
