<s>
KDE	B-Language
Software	I-Language
Compilation	I-Language
4	I-Language
(	O
KDE	B-Language
SC	I-Language
4	I-Language
)	O
was	O
the	O
only	O
series	O
of	O
the	O
so-called	O
KDE	B-Language
Software	I-Language
Compilation	I-Language
(	O
short	O
:	O
KDE	B-Language
SC	I-Language
)	O
,	O
first	O
released	O
in	O
January	O
2008	O
and	O
the	O
last	O
release	O
being	O
4.14.3	O
released	O
in	O
November	O
2014	O
.	O
</s>
<s>
It	O
was	O
the	O
follow-up	O
to	O
K	B-Language
Desktop	I-Language
Environment	I-Language
3	I-Language
.	O
</s>
<s>
Following	O
KDE	B-Language
SC	I-Language
4	I-Language
,	O
the	O
compilation	O
was	O
broken	O
up	O
into	O
basic	O
framework	O
libraries	O
,	O
desktop	O
environment	O
and	O
applications	O
,	O
which	O
are	O
termed	O
KDE	B-Language
Frameworks	I-Language
5	I-Language
,	O
KDE	B-Language
Plasma	I-Language
5	I-Language
and	O
KDE	B-Language
Applications	I-Language
,	O
respectively	O
.	O
</s>
<s>
Major	O
releases	O
(	O
4.x	O
)	O
were	O
released	O
every	O
six	O
months	O
,	O
while	O
minor	O
bugfix	O
releases	O
(	O
4.x.y	O
)	O
were	O
released	O
monthly	O
.	O
</s>
<s>
The	O
series	O
included	O
updates	O
to	O
several	O
of	O
the	O
KDE	B-Language
Platform	I-Language
's	I-Language
core	O
components	O
,	O
notably	O
a	O
port	O
to	O
Qt	B-Language
4	O
.	O
</s>
<s>
It	O
contained	O
a	O
new	O
multimedia	O
API	O
,	O
called	O
Phonon	B-Language
,	O
a	O
device	O
integration	O
framework	O
called	O
Solid	B-Language
and	O
a	O
new	O
style	O
guide	O
and	O
default	O
icon	O
set	O
called	O
Oxygen	B-Language
.	O
</s>
<s>
It	O
also	O
included	O
a	O
new	O
,	O
unified	O
desktop	O
and	O
panel	O
user	O
interface	O
called	O
Plasma	B-Language
,	O
which	O
supported	O
desktop	O
widgets	O
,	O
replacing	O
K	B-Language
Desktop	I-Language
Environment	I-Language
3	I-Language
's	I-Language
separate	O
components	O
.	O
</s>
<s>
One	O
of	O
the	O
overall	O
goals	O
of	O
KDE	B-Application
Platform4	O
was	O
to	O
make	O
it	O
easy	O
for	O
KDE	B-Language
applications	I-Language
to	O
be	O
portable	O
to	O
different	O
operating	O
systems	O
.	O
</s>
<s>
This	O
was	O
made	O
possible	O
by	O
the	O
port	O
to	O
Qt4	B-Language
,	O
which	O
facilitated	O
support	O
for	O
non-X11-based	O
platforms	O
,	O
including	O
Microsoft	B-Application
Windows	I-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
Versions	O
4.0	O
to	O
4.3	O
of	O
KDE	B-Language
Software	I-Language
Compilation	I-Language
were	O
known	O
simply	O
as	O
KDE	B-Language
4	I-Language
–	O
the	O
name	O
change	O
was	O
a	O
component	O
of	O
the	O
KDE	B-Application
project	O
's	O
re-branding	O
to	O
reflect	O
KDE	B-Application
's	O
increased	O
scope	O
.	O
</s>
<s>
This	O
is	O
a	O
short	O
overview	O
of	O
major	O
changes	O
in	O
KDE	B-Language
Software	I-Language
Compilation	I-Language
4	I-Language
.	O
</s>
<s>
The	O
port	O
to	O
the	O
Qt4	B-Language
series	O
was	O
expected	O
to	O
enable	O
KDE	B-Language
4	I-Language
to	O
use	O
less	O
memory	O
and	O
be	O
noticeably	O
faster	O
than	O
KDE	B-Language
3	I-Language
.	O
</s>
<s>
The	O
KDE	B-Application
libraries	O
themselves	O
have	O
also	O
been	O
made	O
more	O
efficient	O
.	O
</s>
<s>
However	O
,	O
tests	O
reveal	O
that	O
KDE	B-Language
4.4	I-Language
has	O
the	O
highest	O
memory	O
utilization	O
on	O
default	O
Ubuntu	B-Operating_System
installations	O
when	O
compared	O
to	O
GNOME	B-Application
2.29	O
,	O
Xfce	B-Language
4.6	O
,	O
and	O
LXDE	B-Language
0.5	O
.	O
</s>
<s>
Qt4	B-Language
is	O
available	O
under	O
the	O
LGPL	B-Application
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
Windows	B-Application
,	O
which	O
allows	O
KDE	B-Language
4	I-Language
to	O
run	O
on	O
those	O
platforms	O
.	O
</s>
<s>
,	O
KDE	B-Language
Software	I-Language
compilation	I-Language
4	I-Language
on	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
is	O
considered	O
beta	O
,	O
while	O
on	O
Windows	B-Application
it	O
is	O
not	O
in	O
the	O
final	O
state	O
,	O
so	O
applications	O
can	O
be	O
unsuitable	O
for	O
day	O
to	O
day	O
use	O
yet	O
.	O
</s>
<s>
During	O
Summer	B-Application
of	I-Application
Code	I-Application
2007	I-Application
an	O
icon	O
cache	O
was	O
created	O
to	O
decrease	O
application	O
start-up	O
times	O
for	O
use	O
in	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
Other	O
applications	O
and	O
a	O
full	O
KDE	B-Application
session	O
started	O
up	O
a	O
little	O
over	O
a	O
second	O
faster	O
.	O
</s>
<s>
Many	O
applications	O
in	O
the	O
Extragear	O
and	O
KOffice	B-Language
modules	O
have	O
received	O
numerous	O
improvements	O
with	O
the	O
new	O
features	O
of	O
KDE	B-Language
4	I-Language
and	O
Qt4	B-Language
.	O
</s>
<s>
But	O
since	O
they	O
follow	O
their	O
own	O
release	O
schedule	O
,	O
they	O
were	O
not	O
all	O
available	O
at	O
the	O
time	O
of	O
the	O
first	O
KDE	B-Language
4	I-Language
release	O
–	O
these	O
include	O
Amarok	B-Language
,	O
K3b	B-Language
,	O
digiKam	B-Language
,	O
KWord	B-Protocol
,	O
and	O
Krita	B-Application
.	O
</s>
<s>
The	O
most	O
noticeable	O
changes	O
for	O
users	O
are	O
the	O
new	O
icons	O
,	O
theme	O
and	O
sounds	O
provided	O
by	O
the	O
Oxygen	B-Language
Project	I-Language
.	O
</s>
<s>
These	O
represent	O
a	O
break	O
from	O
previous	O
KDE	B-Application
icons	O
and	O
graphics	O
,	O
which	O
had	O
a	O
cartoonish	O
look	O
.	O
</s>
<s>
Instead	O
Oxygen	B-Language
icons	I-Language
opt	O
for	O
a	O
more	O
photorealistic	O
style	O
.	O
</s>
<s>
The	O
Oxygen	B-Language
Project	I-Language
builds	O
on	O
the	O
freedesktop.org	B-Application
and	O
,	O
allowing	O
consistency	O
across	O
applications	O
.	O
</s>
<s>
The	O
Oxygen	B-Language
team	O
uses	O
community	O
help	O
for	O
better	O
visuals	O
in	O
KDE	B-Language
4	I-Language
,	O
with	O
both	O
alternate	O
icon	O
sets	O
and	O
the	O
winners	O
of	O
a	O
wallpaper	O
contest	O
held	O
by	O
the	O
Oxygen	B-Language
project	I-Language
being	O
included	O
in	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
There	O
is	O
also	O
a	O
new	O
set	O
of	O
human	B-Application
interface	I-Application
guidelines	I-Application
for	O
a	O
more	O
standardized	O
layout	O
.	O
</s>
<s>
Plasma	B-Language
provides	O
the	O
main	O
desktop	O
user	O
interface	O
and	O
is	O
a	O
rewrite	O
of	O
several	O
core	O
KDE	B-Language
applications	I-Language
,	O
like	O
the	O
desktop	O
drawing	O
and	O
most	O
notably	O
the	O
widget	O
engine	O
.	O
</s>
<s>
Plasma	B-Language
allows	O
a	O
more	O
customisable	O
desktop	O
and	O
more	O
versatile	O
widgets	O
.	O
</s>
<s>
KWin	B-Language
,	O
the	O
KDE	B-Application
Window	O
Manager	O
,	O
now	O
provides	O
its	O
own	O
compositing	O
effects	O
,	O
similar	O
to	O
Compiz	B-Language
.	O
</s>
<s>
Phonon	B-Language
is	O
the	O
name	O
of	O
the	O
multimedia	O
API	O
in	O
KDE4	B-Language
.	O
</s>
<s>
Phonon	B-Language
is	O
a	O
different	O
approach	O
to	O
multimedia	O
backends	O
than	O
in	O
previous	O
versions	O
of	O
KDE	B-Application
.	O
</s>
<s>
This	O
is	O
because	O
Phonon	B-Language
only	O
functions	O
as	O
a	O
wrapper	O
,	O
abstracting	O
the	O
various	O
multimedia	O
frameworks	O
available	O
for	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
into	O
runtime	O
switchable	O
backends	O
that	O
can	O
be	O
accessed	O
through	O
a	O
single	O
API	O
.	O
</s>
<s>
This	O
was	O
done	O
to	O
provide	O
a	O
stable	O
API	O
for	O
KDE	B-Language
4	I-Language
and	O
to	O
prevent	O
it	O
from	O
depending	O
on	O
a	O
single	O
multimedia	O
framework	O
.	O
</s>
<s>
Applications	O
that	O
use	O
the	O
Phonon	B-Language
API	O
can	O
be	O
switched	O
between	O
multimedia	O
frameworks	O
seamlessly	O
by	O
simply	O
changing	O
the	O
backend	O
used	O
in	O
System	B-Operating_System
Settings	I-Operating_System
.	O
</s>
<s>
Nokia	O
adopted	O
Phonon	B-Language
for	O
multimedia	O
use	O
in	O
Qt4.4	O
and	O
are	O
developing	O
backends	O
for	O
Gstreamer	B-Language
,	O
Windows	B-Application
and	O
OS	B-Operating_System
X	I-Operating_System
in	O
the	O
KDE	B-Application
SVN	O
repository	O
under	O
the	O
LGPL	B-Application
.	O
</s>
<s>
Solid	B-Language
is	O
the	O
hardware	O
API	O
in	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
It	O
functions	O
similarly	O
to	O
Phonon	B-Language
as	O
it	O
does	O
not	O
manage	O
hardware	O
on	O
its	O
own	O
but	O
makes	O
existing	O
solutions	O
accessible	O
through	O
a	O
single	O
API	O
.	O
</s>
<s>
The	O
current	O
solution	O
uses	O
HAL	B-Application
,	O
NetworkManager	B-Protocol
and	O
BlueZ	O
(	O
the	O
official	O
Linux	O
bluetooth	O
stack	O
)	O
,	O
but	O
any	O
and	O
all	O
parts	O
can	O
be	O
replaced	O
without	O
breaking	O
the	O
application	O
,	O
making	O
applications	O
using	O
Solid	B-Language
extremely	O
flexible	O
and	O
portable	O
.	O
</s>
<s>
ThreadWeaver	B-Language
is	O
a	O
programming	O
library	O
to	O
help	O
applications	O
take	O
advantage	O
of	O
multicore	O
processors	O
and	O
is	O
included	O
with	O
kdelibs	B-Language
.	O
</s>
<s>
Kross	B-Language
is	O
the	O
new	O
scripting	O
framework	O
for	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
Kross	B-Language
itself	O
is	O
not	O
a	O
scripting	O
language	O
,	O
but	O
makes	O
it	O
easier	O
for	O
developers	O
to	O
add	O
support	O
for	O
other	O
scripting	O
languages	O
.	O
</s>
<s>
Once	O
an	O
application	O
adds	O
support	O
for	O
Kross	B-Language
,	O
any	O
language	O
Kross	B-Language
supports	O
can	O
be	O
used	O
by	O
developers	O
.	O
</s>
<s>
New	O
scripting	O
languages	O
can	O
be	O
added	O
by	O
creating	O
a	O
plugin	O
for	O
Kross	B-Language
,	O
which	O
benefits	O
all	O
applications	O
using	O
it	O
.	O
</s>
<s>
Decibel	O
is	O
a	O
Telepathy-based	O
communication	O
framework	O
,	O
which	O
was	O
expected	O
to	O
be	O
fully	O
used	O
by	O
Kopete	B-Language
by	O
KDE	B-Language
4.2	I-Language
,	O
but	O
which	O
is	O
reported	O
to	O
be	O
postponed	O
indefinitely	O
.	O
</s>
<s>
Strigi	B-Language
is	O
the	O
default	O
search	O
tool	O
for	O
KDE	B-Language
4	I-Language
,	O
chosen	O
for	O
its	O
speed	O
and	O
few	O
dependencies	O
.	O
</s>
<s>
In	O
concert	O
with	O
other	O
software	O
like	O
Soprano	B-Application
,	O
an	O
RDF	O
storage	O
framework	O
,	O
and	O
the	O
NEPOMUK	B-Language
specification	O
,	O
Strigi	B-Language
will	O
provide	O
the	O
beginnings	O
of	O
a	O
semantic	B-Application
desktop	I-Application
in	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
Users	O
can	O
tag	O
files	O
with	O
additional	O
information	O
through	O
Dolphin	B-Application
,	O
which	O
Strigi	B-Language
can	O
index	O
for	O
more	O
accurate	O
searches	O
.	O
</s>
<s>
KDE	B-Language
4	I-Language
uses	O
CMake	B-Language
for	O
its	O
build	O
system	O
.	O
</s>
<s>
Since	O
previous	O
versions	O
of	O
KDE	B-Application
were	O
only	O
on	O
Unix	O
systems	O
,	O
autotools	B-Application
were	O
used	O
,	O
but	O
a	O
new	O
build	O
system	O
was	O
needed	O
for	O
builds	O
on	O
operating	O
systems	O
like	O
Windows	B-Application
.	O
</s>
<s>
CMake	B-Language
also	O
dramatically	O
simplified	O
the	O
build	O
process	O
.	O
</s>
<s>
The	O
autotools	B-Application
build	O
system	O
had	O
become	O
so	O
complicated	O
by	O
KDE	B-Language
3	I-Language
that	O
few	O
developers	O
understood	O
it	O
,	O
requiring	O
hours	O
of	O
work	O
for	O
simple	O
changes	O
.	O
</s>
<s>
In	O
early	O
2007	O
CMake	B-Language
was	O
shown	O
to	O
compile	O
KDE	B-Language
4	I-Language
version	O
of	O
KDElibs	B-Language
40%	O
faster	O
than	O
the	O
autotools	B-Application
compiled	O
KDE	B-Language
3	I-Language
version	O
.	O
</s>
<s>
DXS	O
,	O
previously	O
known	O
as	O
GHNS	B-Language
(	O
Get	O
Hot	O
New	O
Stuff	O
)	O
and	O
now	O
adopted	O
by	O
freedesktop.org,	O
is	O
a	O
web	O
service	O
that	O
lets	O
applications	O
download	O
and	O
install	O
data	O
from	O
the	O
Internet	O
with	O
one	O
click	O
.	O
</s>
<s>
It	O
was	O
used	O
in	O
the	O
KDE	B-Language
3	I-Language
series	O
but	O
has	O
been	O
extended	O
for	O
use	O
throughout	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
Akonadi	B-Language
is	O
a	O
new	O
PIM	B-Application
framework	O
for	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
Akonadi	B-Language
is	O
a	O
unification	O
of	O
previously	O
separate	O
KDE	B-Application
PIM	B-Application
components	O
.	O
</s>
<s>
Akonadi	B-Language
itself	O
functions	O
as	O
a	O
server	O
that	O
provides	O
data	O
and	O
search	O
functions	O
to	O
PIM	B-Application
applications	O
.	O
</s>
<s>
The	O
majority	O
of	O
development	O
went	O
into	O
implementing	O
most	O
of	O
the	O
new	O
technologies	O
and	O
frameworks	O
of	O
KDE	B-Language
4	I-Language
.	O
</s>
<s>
Plasma	B-Language
and	O
the	O
Oxygen	B-Language
style	O
were	O
two	O
of	O
the	O
biggest	O
user-facing	O
changes	O
.	O
</s>
<s>
Dolphin	B-Application
replaces	O
Konqueror	O
as	O
the	O
default	O
file	O
manager	O
in	O
KDE	O
4.0	O
.	O
</s>
<s>
However	O
Dolphin	B-Application
and	O
Konqueror	O
will	O
share	O
as	O
much	O
code	O
as	O
possible	O
,	O
and	O
Dolphin	B-Application
can	O
be	O
embedded	O
in	O
Konqueror	O
to	O
allow	O
Konqueror	O
to	O
still	O
be	O
used	O
as	O
a	O
file	O
manager	O
.	O
</s>
<s>
Okular	B-Language
replaces	O
several	O
document	O
viewers	O
used	O
in	O
KDE3	B-Language
,	O
like	O
KPDF	O
,	O
KGhostView	O
and	O
KDVI	O
.	O
</s>
<s>
Okular	B-Language
makes	O
use	O
of	O
software	O
libraries	O
and	O
can	O
be	O
extended	O
to	O
view	O
almost	O
any	O
kind	O
of	O
document	O
.	O
</s>
<s>
Like	O
Konqueror	O
and	O
KPDF	O
in	O
KDE3	B-Language
,	O
Okular	B-Language
can	O
be	O
embedded	O
in	O
other	O
applications	O
.	O
</s>
<s>
On	O
11	O
May	O
2007	O
,	O
KDE	B-Application
4.0	O
Alpha	O
1	O
was	O
released	O
marking	O
the	O
end	O
of	O
the	O
addition	O
of	O
large	O
features	O
to	O
KDE	B-Application
base	O
libraries	O
and	O
shifting	O
the	O
focus	O
onto	O
integrating	O
the	O
new	O
technologies	O
into	O
applications	O
and	O
the	O
basic	O
desktop	O
.	O
</s>
<s>
Alpha	O
1	O
included	O
new	O
frameworks	O
to	O
build	O
applications	O
with	O
,	O
providing	O
improved	O
hardware	O
and	O
multimedia	O
integration	O
through	O
Solid	B-Language
and	O
Phonon	B-Language
.	O
</s>
<s>
Dolphin	B-Application
and	O
Okular	B-Language
were	O
integrated	O
and	O
a	O
new	O
visual	O
appearance	O
was	O
provided	O
through	O
Oxygen	B-Language
icons	I-Language
.	O
</s>
<s>
The	O
release	O
focused	O
on	O
integrating	O
the	O
Plasma	B-Language
desktop	I-Language
,	O
improving	O
functionality	O
and	O
stabilizing	O
KDE	B-Application
.	O
</s>
<s>
Major	O
features	O
included	O
a	O
pixmap	O
cache	O
–	O
speeding	O
up	O
icon	O
loading	O
,	O
KDE	B-Application
PIM	B-Application
improvements	O
,	O
improved	O
KWin	B-Language
effects	O
and	O
configuration	O
,	O
better	O
interaction	O
between	O
Konqueror	O
and	O
Dolphin	B-Application
and	O
Metalink	B-Application
support	O
added	O
to	O
KGet	B-Language
for	O
improved	O
downloads	O
.	O
</s>
<s>
On	O
6	O
September	O
2007	O
,	O
Beta	O
2	O
was	O
released	O
with	O
improved	O
BSD	B-Operating_System
and	O
Solaris	B-Application
support	O
.	O
</s>
<s>
The	O
release	O
included	O
the	O
addition	O
of	O
the	O
Blitz	O
graphic	O
library	O
–	O
allowing	O
for	O
developers	O
to	O
use	O
high	O
performance	O
graphical	O
tricks	O
like	O
icon	O
animation	O
–	O
and	O
an	O
overhaul	O
of	O
KRDC	B-Language
(	O
K	O
Remote	O
Desktop	O
Client	O
)	O
for	O
Google	O
's	O
Summer	B-Application
of	I-Application
Code	I-Application
.	O
</s>
<s>
Plasma	B-Language
was	O
also	O
integrated	O
with	O
Amarok	B-Language
to	O
provide	O
Amarok	B-Language
's	O
central	O
context	O
view	O
.	O
</s>
<s>
The	O
beta	O
3	O
release	O
was	O
focused	O
on	O
stabilizing	O
and	O
finishing	O
the	O
design	O
of	O
libraries	O
for	O
the	O
release	O
of	O
KDE	B-Application
Development	O
Platform	O
.	O
</s>
<s>
Plasma	B-Language
received	O
many	O
new	O
features	O
including	O
an	O
applet	O
browser	O
.	O
</s>
<s>
A	O
program	O
called	O
Step	B-Language
,	O
an	O
interactive	O
physics	O
simulator	O
,	O
was	O
produced	O
as	O
part	O
of	O
the	O
Google	B-Application
Summer	I-Application
of	I-Application
Code	I-Application
.	O
</s>
<s>
A	O
list	O
of	O
release	O
blockers	O
was	O
compiled	O
,	O
listing	O
issues	O
that	O
need	O
to	O
be	O
resolved	O
before	O
KDE	B-Application
will	O
start	O
with	O
the	O
release	O
candidate	O
cycle	O
for	O
the	O
desktop	O
.	O
</s>
<s>
The	O
development	O
platform	O
contains	O
all	O
the	O
base	O
libraries	O
to	O
develop	O
KDE	B-Language
applications	I-Language
,	O
including	O
"	O
high-level	O
widget	O
libraries	O
,	O
a	O
network	O
abstraction	O
layer	O
and	O
various	O
libraries	O
for	O
multimedia	O
integration	O
,	O
hardware	O
integration	O
and	O
transparent	O
access	O
to	O
resources	O
on	O
the	O
network.	O
"	O
</s>
<s>
This	O
release	O
was	O
called	O
a	O
"	O
Release	O
Candidate	O
"	O
despite	O
Plasma	B-Language
requiring	O
further	O
work	O
and	O
not	O
being	O
ready	O
for	O
release	O
.	O
</s>
<s>
KDE	B-Language
4	I-Language
was	O
released	O
on	O
11	O
January	O
2008	O
.	O
</s>
<s>
Computerworld	O
reporter	O
Steven	O
Vaughan-Nichols	O
criticised	O
KDE	O
4.0	O
and	O
KDE	O
4.1	O
and	O
called	O
for	O
a	O
fork	O
of	O
KDE	O
3.5	O
by	O
rebuilding	O
it	O
on	O
top	O
of	O
Qt4	B-Language
.	O
</s>
<s>
Although	O
Linus	O
Torvalds	O
switched	O
from	O
GNOME	B-Application
to	O
KDE	B-Application
in	O
December	O
2005	O
,	O
he	O
switched	O
back	O
to	O
GNOME	B-Application
after	O
Fedora	O
replaced	O
KDE	B-Application
3.5	O
with	O
4.0	O
.	O
</s>
<s>
(	O
Torvalds	O
did	O
point	O
out	O
,	O
however	O
,	O
that	O
he	O
understood	O
why	O
the	O
developers	O
in	O
charge	O
of	O
the	O
KDE	B-Application
project	O
had	O
chosen	O
to	O
make	O
such	O
drastic	O
changes	O
to	O
the	O
desktop	O
environment	O
in	O
KDE	B-Application
4.0	O
and	O
the	O
reason	O
for	O
its	O
premature	O
release	O
,	O
and	O
that	O
his	O
criticism	O
was	O
more	O
on	O
the	O
way	O
KDE	B-Application
4.0	O
was	O
pushed	O
out	O
to	O
the	O
public	O
.	O
)	O
</s>
<s>
KDE4.1	O
was	O
released	O
on	O
29	O
July	O
2008	O
.	O
</s>
<s>
KDE4.1	O
includes	O
a	O
shared	O
emoticon	O
theming	O
system	O
which	O
is	O
used	O
in	O
PIM	B-Application
and	O
Kopete	B-Language
,	O
and	O
DXS	O
,	O
a	O
service	O
that	O
lets	O
applications	O
download	O
and	O
install	O
data	O
from	O
the	O
Internet	O
with	O
one	O
click	O
.	O
</s>
<s>
Also	O
introduced	O
are	O
GStreamer	B-Language
,	O
QuickTime	B-Application
7	I-Application
,	O
and	O
DirectShow	B-Library
9	O
Phonon	B-Language
backends	O
.	O
</s>
<s>
Plasma	B-Language
improvements	O
include	O
support	O
for	O
Qt4	B-Language
widgets	O
and	O
WebKit	B-Language
integration	O
–	O
allowing	O
many	O
Apple	B-Application
Dashboard	I-Application
widgets	O
to	O
be	O
displayed	O
.	O
</s>
<s>
There	O
will	O
also	O
be	O
ports	O
of	O
some	O
applications	O
to	O
Windows	B-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
KDE	B-Language
4.2	I-Language
was	O
released	O
on	O
27	O
January	O
2009	O
.	O
</s>
<s>
These	O
include	O
grouping	O
and	O
multiple	O
row	O
layout	O
in	O
the	O
task	O
bar	O
,	O
icon	O
hiding	O
in	O
the	O
system	O
tray	O
,	O
panel	O
autohiding	O
,	O
window	O
previews	O
and	O
tooltips	O
are	O
back	O
in	O
the	O
panel	O
and	O
task	O
bar	O
,	O
notifications	O
and	O
job	O
tracking	O
by	O
Plasma	B-Language
,	O
and	O
the	O
ability	O
to	O
have	O
icons	O
on	O
the	O
desktop	O
again	O
by	O
using	O
a	O
Folder	O
View	O
as	O
the	O
desktop	O
background	O
where	O
icons	O
now	O
remain	O
where	O
they	O
are	O
placed	O
.	O
</s>
<s>
New	O
Plasma	B-Language
applets	O
include	O
applets	O
for	O
leaving	O
messages	O
on	O
a	O
locked	O
screen	O
,	O
previewing	O
files	O
,	O
switching	O
desktop	O
Activity	O
,	O
monitoring	O
news	O
feeds	O
,	O
and	O
utilities	O
like	O
the	O
pastebin	O
applet	O
,	O
the	O
calendar	O
,	O
timer	O
,	O
special	O
character	O
selector	O
,	O
a	O
QuickLaunch	O
widget	O
,	O
and	O
a	O
system	O
monitor	O
,	O
among	O
many	O
others	O
.	O
</s>
<s>
The	O
Plasma	B-Language
workspace	O
can	O
now	O
load	O
Google	O
Gadgets	O
.	O
</s>
<s>
Plasma	B-Language
widgets	O
can	O
be	O
written	O
in	O
Ruby	O
and	O
Python	O
.	O
</s>
<s>
Support	O
for	O
applets	O
written	O
in	O
JavaScript	O
and	O
Mac	B-Application
OS	I-Application
X	I-Application
dashboard	I-Application
widgets	I-Application
has	O
been	O
further	O
improved	O
.	O
</s>
<s>
Theming	O
improvements	O
in	O
the	O
Task	O
Bar	O
,	O
Application	O
Launcher	O
,	O
System	O
Tray	O
and	O
most	O
other	O
Plasma	B-Language
components	O
streamline	O
the	O
look	O
and	O
feel	O
and	O
increase	O
consistency	O
.	O
</s>
<s>
A	O
new	O
System	B-Operating_System
Settings	I-Operating_System
module	O
,	O
Desktop	O
Theme	O
Details	O
,	O
gives	O
the	O
user	O
control	O
over	O
each	O
element	O
of	O
various	O
Plasma	B-Language
themes	O
.	O
</s>
<s>
Wallpapers	O
are	O
now	O
provided	O
plugins	O
,	O
so	O
developers	O
can	O
easily	O
write	O
custom	O
wallpaper	O
systems	O
in	O
KDE	B-Language
4.2	I-Language
.	O
</s>
<s>
Available	O
wallpaper	O
plugins	O
in	O
KDE	B-Language
4.2	I-Language
will	O
be	O
slideshows	O
,	O
Mandelbrot	O
fractals	O
,	O
and	O
regular	O
static	O
images	O
.	O
</s>
<s>
KRunner	O
–	O
the	O
"	O
Run	O
command	O
…	O
"	O
dialog	O
–	O
has	O
extended	O
functionality	O
through	O
several	O
new	O
plugins	O
,	O
including	O
spellchecking	O
,	O
Konqueror	O
browser	O
history	O
,	O
power	O
management	O
control	O
through	O
PowerDevil	O
,	O
KDE	B-Application
Places	O
,	O
Recent	O
Documents	O
,	O
and	O
the	O
ability	O
to	O
start	O
specific	O
sessions	O
of	O
the	O
Kate	O
editor	O
,	O
Konqueror	O
and	O
Konsole	B-Language
.	O
</s>
<s>
Multi-screen	O
support	O
has	O
been	O
improved	O
through	O
the	O
Kephal	O
library	O
,	O
fixing	O
many	O
bugs	O
when	O
running	O
KDE	B-Application
on	O
more	O
than	O
one	O
monitor	O
.	O
</s>
<s>
The	O
components	O
"	O
printer-applet	O
"	O
and	O
"	O
system-config-printer-kde	O
"	O
are	O
shipped	O
with	O
the	O
kdeadmin	O
and	O
kdeutils	O
module	O
.	O
</s>
<s>
Dolphin	B-Application
now	O
supports	O
previews	O
of	O
files	O
in	O
toolbars	O
and	O
has	O
gained	O
a	O
slider	O
to	O
zoom	O
in	O
and	O
out	O
on	O
file	O
item	O
views	O
.	O
</s>
<s>
Konqueror	O
offers	O
increased	O
loading	O
speed	O
by	O
prefetching	O
domain	O
name	O
data	O
in	O
KHTML	B-Language
.	O
</s>
<s>
KRDC	B-Language
,	O
the	O
remote	O
desktop	O
client	O
improves	O
support	O
for	O
Microsoft	O
's	O
Active	O
Directory	O
through	O
LDAP	O
.	O
</s>
<s>
Kontact	B-Language
has	O
gained	O
a	O
new	O
planner	O
summary	O
and	O
support	O
for	O
drag	O
and	O
drop	O
in	O
the	O
free/busy	O
view	O
.	O
</s>
<s>
The	O
KDE	B-Language
4.2	I-Language
release	O
"	O
marks	O
the	O
end	O
of	O
the	O
testing	O
phase	O
by	O
being	O
the	O
first	O
release	O
ready	O
for	O
everyone	O
–	O
instead	O
of	O
just	O
developers	O
and	O
enthusiasts	O
"	O
according	O
to	O
Thom	O
Holwerda	O
,	O
a	O
member	O
of	O
OSNews	O
.	O
</s>
<s>
KDE4.3	O
was	O
released	O
on	O
4	O
August	O
2009	O
.	O
</s>
<s>
Polishing	O
KDE	B-Language
4	I-Language
was	O
a	O
focus	O
of	O
4.3	O
,	O
with	O
this	O
release	O
being	O
described	O
as	O
incremental	O
and	O
lacking	O
in	O
major	O
new	O
features	O
.	O
</s>
<s>
Integration	O
with	O
other	O
technologies	O
,	O
such	O
as	O
PolicyKit	B-Language
,	O
NetworkManager	B-Protocol
&	O
Geolocation	O
services	O
,	O
was	O
another	O
focus	O
of	O
this	O
release	O
.	O
</s>
<s>
Many	O
new	O
Plasmoids	O
have	O
been	O
added	O
,	O
including	O
the	O
openDesktop.org	B-Language
Plasmoid	O
–	O
an	O
initial	O
take	O
on	O
the	O
Social	O
Desktop	O
.	O
</s>
<s>
Plasma	B-Language
also	O
receives	O
more	O
keyboard	O
shortcuts	O
.	O
</s>
<s>
KDE	B-Language
SC	I-Language
4.4	I-Language
was	O
released	O
on	O
9	O
February	O
2010	O
and	O
is	O
based	O
on	O
version	O
4.6	O
of	O
the	O
Qt	B-Language
4	O
toolkit	O
.	O
</s>
<s>
As	O
such	O
,	O
KDE	B-Language
SC	I-Language
4.4	I-Language
carries	O
Qt	B-Language
's	O
performance	O
improvements	O
as	O
well	O
as	O
Qt4.6	O
'	O
s	O
new	O
features	O
,	O
such	O
as	O
the	O
new	O
animation	O
framework	O
Kinetic	O
.	O
</s>
<s>
Key	O
features	O
of	O
the	O
new	O
KAddressBook	O
are	O
Akonadi	B-Language
integration	O
and	O
a	O
streamlined	O
user	O
interface	O
.	O
</s>
<s>
Another	O
major	O
new	O
feature	O
is	O
an	O
additional	O
new	O
Plasma	B-Language
interface	O
,	O
targeted	O
towards	O
netbooks	B-Device
.	O
</s>
<s>
Kopete	B-Language
is	O
released	O
as	O
version	O
1.0	O
.	O
</s>
<s>
KAuth	O
,	O
a	O
cross-platform	O
authentication	O
API	O
,	O
made	O
its	O
début	O
in	O
KDE	B-Language
SC	I-Language
4.4	I-Language
.	O
</s>
<s>
Initially	O
only	O
PolicyKit	B-Language
is	O
supported	O
as	O
back-end	O
.	O
</s>
<s>
New	O
features	O
include	O
the	O
integration	O
of	O
the	O
WebKit	B-Language
library	O
,	O
an	O
open-source	O
web	O
browser	O
engine	O
,	O
which	O
is	O
used	O
in	O
major	O
browsers	O
such	O
as	O
Apple	B-Application
Safari	I-Application
and	O
Google	B-Application
Chrome	I-Application
.	O
</s>
<s>
KDE	B-Application
's	O
own	O
KHTML	B-Language
engine	O
will	O
continue	O
to	O
be	O
developed	O
.	O
</s>
<s>
KPackage	B-Language
has	O
been	O
deprecated	O
.	O
</s>
<s>
KPackageKit	B-Language
was	O
suggested	O
to	O
replace	O
it	O
but	O
it	O
did	O
n't	O
make	O
it	O
to	O
replace	O
it	O
.	O
</s>
<s>
KDE	O
SC	O
4.7	O
was	O
released	O
on	O
28	O
July	O
2011	O
.	O
</s>
<s>
This	O
version	O
updated	O
KWin	B-Language
in	O
order	O
to	O
be	O
compatible	O
with	O
OpenGL	O
ES	O
2.0	O
,	O
which	O
will	O
enhance	O
its	O
portability	O
to	O
mobile	O
and	O
tablet	O
platforms	O
.	O
</s>
<s>
Other	O
optimizations	O
,	O
such	O
as	O
the	O
use	O
of	O
Qt	B-Language
Quick	O
,	O
were	O
made	O
in	O
order	O
to	O
enhance	O
this	O
portability	O
.	O
</s>
<s>
This	O
version	O
also	O
brought	O
updates	O
and	O
enhancements	O
to	O
Plasma	B-Language
Desktop	I-Language
such	O
as	O
better	O
network	O
management	O
and	O
updates	O
to	O
certain	O
widgets	O
(	O
like	O
the	O
Kickoff	O
menu	O
)	O
as	O
well	O
as	O
activities	O
.	O
</s>
<s>
Aside	O
from	O
the	O
desktop	O
environment	O
,	O
version	O
4.7	O
updates	O
many	O
applications	O
within	O
the	O
Software	O
Compilation	O
.	O
</s>
<s>
Dolphin	B-Application
file	I-Application
manager	I-Application
has	O
been	O
updated	O
to	O
include	O
a	O
cleaner	O
user	O
interface	O
.	O
</s>
<s>
The	O
Kontact	B-Language
database	O
has	O
also	O
been	O
ported	O
to	O
Akonadi	B-Language
which	O
allows	O
the	O
database	O
to	O
be	O
easily	O
accessible	O
from	O
other	O
applications	O
.	O
</s>
<s>
Furthermore	O
,	O
the	O
KMail	O
database	O
has	O
also	O
been	O
ported	O
to	O
Akonadi	B-Language
.	O
</s>
<s>
DigiKam	B-Language
has	O
been	O
updated	O
to	O
support	O
face	O
detection	O
,	O
image	O
versioning	O
,	O
and	O
image	O
tagging	O
.	O
</s>
<s>
Moreover	O
,	O
version	O
4.7	O
fixed	O
over	O
12,000	O
bugs	O
.	O
</s>
<s>
KWin	B-Language
's	I-Language
rendering	O
performance	O
was	O
increased	O
by	O
optimizing	O
effect	O
rendering	O
.	O
</s>
<s>
Other	O
KWin	B-Language
features	O
are	O
:	O
QML	B-Language
based	O
Window	O
switcher	O
(	O
Tabbox	O
)	O
,	O
AnimationEffect	O
class	O
and	O
initial	O
Wayland	B-Language
support	O
.	O
</s>
<s>
A	O
new	O
major	O
version	O
of	O
Dolphin	B-Application
shipped	O
with	O
KDE	B-Language
Applications	I-Language
4.8	O
.	O
</s>
<s>
Cantor	B-Language
shipped	O
with	O
additional	O
back-ends	O
based	O
on	O
Scilab	B-Application
and	O
Qalculate	O
.	O
</s>
<s>
The	O
release	O
featured	O
several	O
improvements	O
to	O
the	O
Dolphin	B-Application
file	I-Application
manager	I-Application
,	O
including	O
the	O
reintroduction	O
of	O
in-line	O
file	O
renaming	O
,	O
back	O
and	O
forward	O
mouse	O
buttons	O
,	O
improvement	O
of	O
the	O
places	O
panel	O
and	O
better	O
usage	O
of	O
file	O
metadata	O
.	O
</s>
<s>
Additionally	O
,	O
there	O
were	O
several	O
improvements	O
to	O
KWin	B-Language
and	O
Konsole	B-Language
.	O
</s>
<s>
Several	O
applications	O
were	O
updated	O
,	O
including	O
Okular	B-Language
,	O
Kopete	B-Language
,	O
Kontact	B-Language
,	O
and	O
educational	O
applications	O
.	O
</s>
<s>
Many	O
of	O
the	O
default	O
Plasma	B-Language
widgets	O
were	O
rewritten	O
in	O
QML	B-Language
,	O
and	O
Nepomuk	B-Language
,	O
Kontact	B-Language
and	O
Okular	B-Language
received	O
significant	O
speed	O
improvements	O
.	O
</s>
<s>
Kontact	B-Language
and	O
Nepomuk	B-Language
received	O
many	O
optimizations	O
.	O
</s>
<s>
The	O
first	O
generation	O
Plasma	B-Language
Workspaces	I-Language
entered	O
maintenance-only	O
development	O
mode	O
.	O
</s>
<s>
Kontact	B-Language
received	O
substantial	O
improvements	O
.	O
</s>
<s>
Nepomuk	B-Language
semantic	B-Application
desktop	I-Application
search	O
was	O
replaced	O
with	O
KDE	B-Application
's	O
in	O
house	O
Baloo	O
.	O
</s>
<s>
This	O
was	O
the	O
final	O
KDE	B-Language
SC	I-Language
4	I-Language
release	O
.	O
</s>
<s>
DateEvent4.0	O
2	O
April	O
2007	O
Subsystem	O
FreezeFrom	O
this	O
date	O
forward	O
,	O
no	O
new	O
KDE	B-Application
subsystem	O
or	O
major	O
changes	O
can	O
be	O
committed	O
to	O
kdelibs	B-Language
.	O
</s>
<s>
1	O
May	O
2007	O
kdelibs	B-Language
soft	O
API	O
FreezeThe	O
kdelibs	B-Language
API	O
is	O
"	O
soft-frozen	O
"	O
,	O
meaning	O
that	O
changes	O
can	O
be	O
made	O
with	O
the	O
consent	O
of	O
the	O
core	O
developers	O
.	O
</s>
<s>
11	O
May	O
2007	O
Alpha	O
1	O
1	O
June	O
2007	O
trunk/KDE	O
is	O
module	O
frozenTrunk	O
is	O
frozen	O
for	O
new	O
or	O
resurrected	O
applications	O
.	O
</s>
<s>
18	O
October	O
2007	O
Beta	O
3	O
24	O
October	O
2007	O
KDE	B-Language
4	I-Language
Release	O
FreezeSource	O
and	O
binary	O
compatibility	O
until	O
KDE	B-Language
5	I-Language
,	O
hard	O
freeze	O
Platform	O
&	O
soft	O
freeze	O
Desktop	O
.	O
</s>
<s>
Preceded	O
by	O
4.1.1	O
to	O
4.1.3.4.2	O
17	O
November	O
2008	O
Feature	O
Freeze	O
26	O
November	O
2008	O
Beta	O
1	O
18	O
December	O
2008	O
Beta	O
2	O
13	O
January	O
2009	O
Release	O
candidate	O
1	O
27	O
January	O
2009	O
KDE	B-Language
4.2	I-Language
released	O
2	O
June	O
20094.2.4	O
Maintenance	O
release	O
.	O
</s>
<s>
Preceded	O
by	O
4.3.1	O
to	O
4.3.4.4.4	O
25	O
November	O
2009	O
Feature	O
Freeze	O
4	O
December	O
2009	O
Beta	O
1	O
21	O
December	O
2009	O
Beta	O
2	O
8	O
January	O
2010	O
Release	O
candidate	O
1	O
25	O
January	O
2010	O
Release	O
candidate	O
2	O
1	O
February	O
2010	O
Release	O
candidate	O
3	O
9	O
February	O
2010	O
KDE	B-Language
SC	I-Language
4.4	I-Language
released	O
30	O
June	O
20104.4.5	O
Maintenance	O
release	O
.	O
</s>
<s>
Preceded	O
by	O
4.4.1	O
to	O
4.4.4.4.5	O
11	O
May	O
2010	O
Feature	O
Freeze	O
26	O
May	O
2010	O
Beta	O
1	O
9	O
June	O
2010	O
Beta	O
2	O
27	O
June	O
2010	O
Release	O
candidate	O
1	O
8	O
July	O
2010	O
Release	O
candidate	O
2	O
26	O
July	O
2010	O
Release	O
candidate	O
3	O
10	O
August	O
2010	O
KDE	O
SC	O
4.5	O
released	O
7	B-Device
January	O
20114.5.5	O
Maintenance	O
release	O
.	O
</s>
<s>
Preceded	O
by	O
4.6.1	O
to	O
4.6.4.4.7	O
12	O
May	O
2011	O
Feature	O
Freeze	O
25	O
May	O
2011	O
Beta	O
1	O
8	O
June	O
2011	O
Beta	O
2	O
22	O
June	O
2011	O
Release	O
candidate	O
1	O
6	O
July	O
2011	O
Release	O
candidate	O
2	O
27	O
July	O
2011	O
KDE	O
SC	O
4.7	O
released	O
6	O
December	O
2011	O
4.7.4	O
Maintenance	O
Release	O
.	O
</s>
<s>
Preceded	O
by	O
4.7.1	O
to	O
4.7.3.4.8	O
10	O
November	O
2011	O
Feature	O
Freeze	O
23	O
November	O
2011	O
Beta	O
1	O
7	B-Device
December	O
2011	O
Beta	O
2	O
21	O
December	O
2011	O
Release	O
candidate	O
1	O
4	O
January	O
2012	O
Release	O
candidate	O
2	O
25	O
January	O
2012	O
KDE	O
SC	O
4.8	O
released	O
6	O
August	O
2012	O
4.8.5	O
Maintenance	O
Release	O
.	O
</s>
<s>
Preceded	O
by	O
4.10.1	O
to	O
4.10.4.4.11	O
22	O
May	O
2013	O
Feature	O
Freeze	O
12	O
June	O
2013	O
Beta	O
1	O
26	O
June	O
2013	O
Beta	O
2	O
10	O
July	O
2013	O
Release	O
candidate	O
1	O
24	O
July	O
2013	O
Release	O
candidate	O
2	O
14	O
August	O
2013	O
KDE	O
SC	O
4.11	O
released	O
7	B-Device
January	O
2014	O
4.11.5	O
Maintenance	O
Release	O
.	O
</s>
