<s>
The	O
Apple	B-Operating_System
Developer	I-Operating_System
Tools	I-Operating_System
are	O
a	O
suite	O
of	O
software	O
tools	O
from	O
Apple	O
to	O
aid	O
in	O
making	O
software	O
dynamic	O
titles	O
for	O
the	O
macOS	B-Application
and	O
iOS	B-Application
platforms	O
.	O
</s>
<s>
The	O
developer	B-Application
tools	O
were	O
formerly	O
included	O
on	O
macOS	B-Application
install	O
media	O
,	O
but	O
are	O
now	O
exclusively	O
distributed	O
over	O
the	O
Internet	O
.	O
</s>
<s>
As	O
of	O
macOS	B-Operating_System
10.12	I-Operating_System
,	O
Xcode	B-Operating_System
is	O
available	O
as	O
a	O
free	O
download	O
from	O
the	O
Mac	B-Application
App	I-Application
Store	I-Application
.	O
</s>
<s>
A	O
graphical	O
interface	O
for	O
JavaScript	O
's	O
Plug-in	O
,	O
which	O
aids	O
developers	B-Application
by	O
demonstrating	O
how	O
Java	B-Language
applets	O
perform	O
on	O
macOS	B-Application
.	O
</s>
<s>
A	O
graphic	O
presentation	O
of	O
audio	O
units	O
helping	O
software	B-Application
developers	I-Application
to	O
examine	O
their	O
results	O
in	O
decibels	O
.	O
</s>
<s>
AU	B-Operating_System
Lab	I-Operating_System
can	O
be	O
used	O
to	O
test	O
audio	O
units	O
,	O
conduct	O
live	O
mixing	O
,	O
and	O
playback	O
of	O
audio	O
content	O
.	O
</s>
<s>
A	O
set	O
of	O
software	O
tools	O
,	O
collectively	O
Computer	O
Hardware	O
Understanding	O
Development	O
Tools	O
(	O
CHUD	O
Tools	O
)	O
measure	O
software	O
performance	O
on	O
macOS	B-Application
,	O
to	O
aid	O
in	O
optimizing	O
.	O
</s>
<s>
Used	O
in	O
testing	O
Core	B-Operating_System
Image	I-Operating_System
units	O
,	O
which	O
function	O
similar	O
to	O
Adobe	B-Operating_System
Photoshop	I-Operating_System
filters	O
.	O
</s>
<s>
Showcases	O
Core	B-Operating_System
Image	I-Operating_System
,	O
a	O
technology	O
introduced	O
in	O
Mac	B-Application
OS	I-Application
X	I-Application
10.4	I-Application
,	O
supported	O
by	O
newer	O
graphic	O
hardware	O
.	O
</s>
<s>
A	O
developer	B-Application
utility	O
for	O
setting	O
report	O
parameters	O
for	O
Apple	O
's	O
Crash	O
Reporter	O
application	O
.	O
</s>
<s>
Developer	B-Application
:	O
Provides	O
additional	O
debug	O
info	O
and	O
automatically	O
shows	O
the	O
mail	O
to	O
Apple	O
window	O
.	O
</s>
<s>
A	O
staple	O
of	O
macOS	B-Application
's	O
developer	B-Application
tools	O
since	O
the	O
days	O
of	O
NeXTSTEP	B-Application
,	O
FileMerge	O
graphically	O
compares	O
two	O
or	O
more	O
versions	O
of	O
a	O
file	O
.	O
</s>
<s>
macOS	B-Application
's	O
command	O
provides	O
the	O
ability	O
to	O
launch	O
FileMerge	O
from	O
the	O
command	O
line	O
.	O
</s>
<s>
Creates	O
an	O
index	B-Data_Structure
file	I-Data_Structure
for	O
the	O
macOS	B-Application
built-in	O
Help	B-Protocol
Viewer	I-Protocol
.	O
</s>
<s>
Icon	B-Operating_System
Composer	I-Operating_System
was	O
an	O
icon	O
editor	O
that	O
does	O
not	O
have	O
any	O
editing	O
features	O
other	O
than	O
composing	O
Apple	O
Icon	O
Image	O
files	O
and	O
Windows	O
ICO	O
files	O
.	O
</s>
<s>
As	O
of	O
Xcode	B-Operating_System
8.2	O
,	O
Icon	B-Operating_System
Composer	I-Operating_System
is	O
no	O
longer	O
available	O
in	O
Additional	O
Tools	O
,	O
as	O
it	O
cannot	O
create	O
high	O
resolution	O
icons	O
.	O
</s>
<s>
Apple	O
recommends	O
using	O
the	O
command-line	O
utility	O
iconutil	O
,	O
which	O
ships	O
with	O
macOS	B-Application
.	O
</s>
<s>
Instruments	B-Operating_System
is	O
a	O
GUI	O
for	O
tracing	O
framework	O
DTrace	B-Application
from	O
Sun	O
's	O
OpenSolaris	B-Operating_System
.	O
</s>
<s>
It	O
is	O
used	O
to	O
profile	O
time	O
usage	O
,	O
memory	O
allocations	O
,	O
system	O
activity	O
,	O
call	O
trace	O
analysis	O
,	O
GPU	O
performance	O
analysis	O
,	O
energy	O
logging	O
(	O
on	O
iOS	B-Application
devices	O
)	O
etc	O
.	O
</s>
<s>
Java	B-Language
tool	B-Application
that	O
aids	O
in	O
packaging	O
an	O
application	O
’s	O
component	O
files	O
into	O
a	O
single	O
double-clickable	O
application	O
.	O
</s>
<s>
Assistance	O
for	O
assessing	O
memory	O
usage	O
and	O
detecting	O
memory	B-Error_Name
leaks	I-Error_Name
in	O
programs	O
.	O
</s>
<s>
Assesses	O
an	O
application	O
's	O
memory	O
usage	O
by	O
monitoring	O
a	O
user	O
as	O
they	O
interact	O
with	O
an	O
application	O
,	O
which	O
allows	O
MallocDebug	B-Operating_System
to	O
build	O
a	O
memory	O
profile	O
that	O
unfortunately	O
is	O
limited	O
in	O
size	O
.	O
</s>
<s>
Runs	O
locally	O
or	O
over	O
a	O
network	O
using	O
Bonjour	B-Application
which	O
is	O
less	O
likely	O
to	O
interfere	O
with	O
the	O
statistics	O
it	O
is	O
gathering	O
with	O
the	O
exception	O
of	O
some	O
disk	O
fragmentation	O
devices	O
.	O
</s>
<s>
This	O
tool	B-Application
assists	O
developers	B-Application
in	O
debugging	O
and	O
optimizing	O
OpenGL	B-Application
usage	O
under	O
macOS	B-Application
.	O
</s>
<s>
An	O
integrated	O
environment	O
to	O
develop	O
and	O
debug	O
OpenGL	B-Application
GPU	O
programs	O
(	O
Shaders	O
)	O
under	O
macOS	B-Application
.	O
</s>
<s>
Features	O
supported	O
by	O
OpenGL	B-Operating_System
Shader	I-Operating_System
Builder	I-Operating_System
:	O
</s>
<s>
One	O
notable	O
feature	O
is	O
'	O
Export	O
to	O
Xcode	B-Operating_System
 '	O
.	O
</s>
<s>
A	O
sample	O
Xcode	B-Operating_System
project	O
is	O
created	O
with	O
C	B-Language
source	O
code	O
to	O
initialize	O
OpenGL	B-Application
(	O
using	O
the	O
GLUT	B-Library
library	O
)	O
and	O
run	O
the	O
shader	O
program	O
.	O
</s>
<s>
Creates	O
application	O
.pkg	O
installer	O
bundles	B-Application
for	O
installing	O
applications	O
using	O
the	O
Installer	O
application	O
.	O
</s>
<s>
A	O
magnifying	O
glass	O
application	O
for	O
magnifying	O
small	O
sections	O
of	O
the	O
computer	O
's	O
screen	O
,	O
centered	O
around	O
the	O
mouse	O
cursor	B-Application
,	O
giving	O
the	O
user	O
a	O
detailed	O
view	O
of	O
the	O
screen	O
,	O
as	O
well	O
as	O
the	O
pixel	B-Algorithm
coordinates	O
of	O
the	O
mouse	O
.	O
</s>
<s>
Edits	O
application	O
preference	O
plist	B-Application
files	O
.	O
</s>
<s>
As	O
of	O
Xcode	B-Operating_System
4	O
,	O
Property	B-Operating_System
List	I-Operating_System
Editor	I-Operating_System
is	O
no	O
longer	O
included	O
as	O
a	O
separate	O
application	O
and	O
all	O
editing	O
of	O
plist	B-Application
files	O
is	O
done	O
within	O
Xcode	B-Operating_System
.	O
</s>
<s>
The	O
last	O
stand-alone	O
version	O
was	O
version	O
5.3	O
in	O
Xcode	B-Operating_System
3.2.6	O
.	O
</s>
<s>
A	O
visual	B-Language
programming	I-Language
language	I-Language
for	O
processing	O
and	O
rendering	O
data	O
.	O
</s>
<s>
Using	O
OpenGL	B-Application
,	O
Core	B-Operating_System
Image	I-Operating_System
,	O
Core	B-Operating_System
Video	I-Operating_System
,	O
and	O
other	O
technologies	O
to	O
build	O
an	O
API	B-General_Concept
and	O
serves	O
as	O
a	O
simple	O
visual	B-Language
programming	I-Language
paradigm	O
.	O
</s>
<s>
Quartz	O
Composer	O
is	O
a	O
core	O
technology	O
of	O
the	O
macOS	B-Application
.	O
</s>
<s>
Quartz	O
Composer	O
creations	O
work	O
in	O
any	O
QuickTime-aware	O
application	O
(	O
beginning	O
with	O
Mac	B-Application
OS	I-Application
X	I-Application
10.4	I-Application
)	O
,	O
from	O
the	O
Quartz	O
Composer	O
application	O
,	O
or	O
embedded	O
into	O
Cocoa	B-Operating_System
or	O
Carbon	B-Operating_System
applications	O
.	O
</s>
<s>
Quartz	O
Composer	O
has	O
many	O
similarities	O
to	O
Max/MSP	B-Application
although	O
its	O
primary	O
usage	O
is	O
for	O
graphical	O
rather	O
than	O
audio	O
processing	O
.	O
</s>
<s>
Offers	O
the	O
ability	O
to	O
construct	O
interactive	O
video	O
compositions	O
that	O
react	O
to	O
audio	O
or	O
MIDI	O
signals	O
and	O
can	O
be	O
played	O
from	O
any	O
QuickTime	B-Application
aware	O
application	O
.	O
</s>
<s>
A	O
resurgence	O
in	O
interest	O
in	O
Quartz	O
Composer	O
has	O
come	O
about	O
,	O
as	O
the	B-Application
Facebook	I-Application
design	O
team	O
has	O
been	O
showcasing	O
their	O
utilization	O
of	O
the	O
program	O
to	O
prototype	O
interactions	O
that	O
they	O
could	O
n't	O
have	O
otherwise	O
depicted	O
with	O
flat	O
mockups	O
in	O
Photoshop	B-Operating_System
.	O
</s>
<s>
Optimizes	O
the	O
performance	O
of	O
the	O
built-in	O
text-to-speech	B-Application
software	I-Application
for	O
macOS	B-Application
.	O
</s>
<s>
Tests	O
the	O
operating	O
system	O
's	O
phonemic	B-Language
translation	O
engine	O
,	O
creates	O
graphs	O
of	O
the	O
generated	O
tone	O
,	O
to	O
visually	O
adjust	O
the	O
intonation	O
,	O
and	O
records	O
samples	O
for	O
reference	O
.	O
</s>
<s>
Shark	B-Operating_System
is	O
a	O
profiler	O
,	O
used	O
by	O
software	B-Application
developers	I-Application
to	O
optimize	O
software	O
programs	O
on	O
macOS	B-Application
.	O
</s>
<s>
Since	O
Mac	B-Application
OS	I-Application
X	I-Application
10.7	I-Application
,	O
it	O
is	O
not	O
on	O
the	O
Apple	O
site	O
any	O
more	O
and	O
was	O
replaced	O
by	O
Instruments	B-Operating_System
.	O
</s>
<s>
Spin	O
Control	O
is	O
a	O
performance	O
tool	B-Application
used	O
for	O
monitoring	O
hang	O
activity	O
in	O
software	O
programs	O
.	O
</s>
<s>
The	O
program	O
gets	O
its	O
name	O
from	O
the	O
spinning	B-Operating_System
pinwheel	I-Operating_System
on	O
macOS	B-Application
.	O
</s>
<s>
Discontinued	O
as	O
of	O
Xcode	B-Operating_System
4.2	O
.	O
</s>
<s>
Thread	B-Operating_System
Viewer	I-Operating_System
is	O
a	O
performance	O
tool	B-Application
which	O
graphically	O
displays	O
activity	O
across	O
a	O
range	O
of	O
threads	B-Operating_System
.	O
</s>
<s>
It	O
provides	O
color-coded	O
time-line	O
views	O
of	O
thread	B-Operating_System
activity	O
and	O
can	O
display	O
backtraces	O
of	O
activity	O
at	O
specific	O
points	O
in	O
time	O
.	O
</s>
<s>
It	O
was	O
merged	O
in	O
Instruments	B-Operating_System
app	O
,	O
and	O
can	O
be	O
accessed	O
via	O
"	O
System	O
Trace	O
"	O
instrument	O
.	O
</s>
<s>
Xcode	B-Operating_System
is	O
an	O
integrated	B-Application
development	I-Application
environment	I-Application
(	O
IDE	B-Application
)	O
for	O
macOS	B-Application
containing	O
a	O
suite	O
of	O
software	O
development	O
tools	O
developed	O
by	O
Apple	O
for	O
developing	O
software	O
for	O
macOS	B-Application
,	O
iOS	B-Application
,	O
iPadOS	B-Operating_System
,	O
watchOS	B-Device
,	O
and	O
tvOS	B-Operating_System
.	O
</s>
<s>
Xcode	B-Operating_System
supports	O
developing	O
source	O
code	O
for	O
the	O
programming	O
languages	O
C	B-Language
,	O
C++	B-Language
,	O
Objective-C	B-Language
,	O
Objective-C	B-Language
++	O
,	O
Java	B-Language
,	O
AppleScript	B-Application
,	O
Python	B-Language
,	O
Ruby	B-Language
,	O
ResEdit	B-Operating_System
(	O
Rez	O
)	O
,	O
and	O
Swift	B-Application
,	O
with	O
a	O
variety	O
of	O
programming	O
models	O
,	O
including	O
but	O
not	O
limited	O
to	O
Cocoa	B-Operating_System
,	O
Carbon	B-Operating_System
,	O
and	O
Java	B-Language
.	O
</s>
