<s>
Xfce	O
or	O
XFCE	O
(	O
pronounced	O
as	O
four	O
individual	O
letters	O
)	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
desktop	O
environment	O
for	O
Linux	B-Application
and	O
other	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Xfce	O
embodies	O
the	O
traditional	B-Application
Unix	I-Application
philosophy	O
of	O
modularity	B-Architecture
and	O
re-usability	O
.	O
</s>
<s>
Another	O
priority	O
of	O
Xfce	O
is	O
adherence	O
to	O
standards	O
,	O
specifically	O
those	O
defined	O
at	O
freedesktop.org	B-Application
.	O
</s>
<s>
Like	O
GNOME	B-Application
,	O
Xfce	O
is	O
based	O
on	O
the	O
GTK	B-Application
toolkit	I-Application
,	O
but	O
it	O
is	O
not	O
a	O
GNOME	B-Application
fork	B-Application
.	O
</s>
<s>
It	O
uses	O
the	O
Xfwm	O
window	B-Application
manager	I-Application
,	O
described	O
below	O
.	O
</s>
<s>
Xfce	O
does	O
not	O
feature	O
any	O
desktop	O
animations	O
,	O
but	O
Xfwm	O
supports	O
compositing	B-Operating_System
.	O
</s>
<s>
Olivier	O
Fourdan	O
started	O
the	O
project	O
in	O
late	O
1996	O
as	O
a	O
Linux	B-Application
version	O
of	O
the	O
Common	B-Application
Desktop	I-Application
Environment	I-Application
(	O
CDE	O
)	O
,	O
a	O
Unix	B-Application
desktop	O
environment	O
that	O
was	O
initially	O
proprietary	B-Application
and	O
later	O
released	O
as	O
free	B-Application
software	I-Application
.	O
</s>
<s>
The	O
name	O
"	O
XFCE	O
"	O
was	O
originally	O
an	O
initialism	O
for	O
"	O
XForms	B-Application
Common	O
Environment	O
"	O
,	O
but	O
since	O
that	O
time	O
it	O
has	O
been	O
rewritten	O
twice	O
and	O
no	O
longer	O
uses	O
the	O
XForms	B-Application
toolkit	O
.	O
</s>
<s>
The	O
developers	O
 '	O
current	O
stance	O
is	O
that	O
the	O
initialism	O
no	O
longer	O
stands	O
for	O
anything	O
specific	O
;	O
after	O
noting	O
this	O
,	O
the	O
FAQ	O
on	O
the	O
Xfce	O
Wiki	B-Protocol
comments	O
"	O
(	O
suggestion	O
:	O
X	O
Freakin	O
 '	O
Cool	O
Environment	O
)	O
"	O
.	O
</s>
<s>
The	O
Slackware	B-Application
Linux	I-Application
distribution	O
has	O
nicknamed	O
Xfce	O
the	O
"	O
Cholesterol	O
Free	B-Application
Desktop	I-Application
Environment	O
"	O
,	O
a	O
loose	O
interpretation	O
of	O
the	O
initialism	O
.	O
</s>
<s>
In	O
the	O
SuperTuxKart	B-Application
game	O
,	O
in	O
which	O
various	O
open	O
source	O
mascots	O
race	O
against	O
each	O
other	O
,	O
the	O
mouse	O
is	O
said	O
to	O
be	O
a	O
female	O
named	O
"	O
Xue	O
"	O
.	O
</s>
<s>
Xfce	O
began	O
as	O
a	O
simple	O
project	O
created	O
with	O
XForms	B-Application
.	O
</s>
<s>
Fourdan	O
continued	O
developing	O
the	O
project	O
and	O
in	O
1998	O
,	O
Xfce	O
2	O
was	O
released	O
with	O
the	O
first	O
version	O
of	O
Xfce	O
's	O
window	B-Application
manager	I-Application
,	O
Xfwm	O
.	O
</s>
<s>
He	O
requested	O
to	O
have	O
the	O
project	O
included	O
in	O
Red	O
Hat	O
Linux	B-Application
,	O
but	O
was	O
refused	O
due	O
to	O
its	O
XForms	B-Application
basis	O
.	O
</s>
<s>
Red	O
Hat	O
only	O
accepted	O
software	O
that	O
was	O
open	O
source	O
and	O
released	O
under	O
either	O
a	O
GPL	B-License
or	O
BSD	B-Operating_System
compatible	O
license	O
,	O
whereas	O
,	O
at	O
the	O
time	O
,	O
XForms	B-Application
was	O
closed	B-Application
source	I-Application
and	O
free	O
only	O
for	O
personal	O
use	O
.	O
</s>
<s>
For	O
the	O
same	O
reason	O
,	O
Xfce	O
was	O
not	O
in	O
Debian	O
before	O
version	O
3	O
,	O
and	O
Xfce	O
2	O
was	O
only	O
distributed	O
in	O
Debian	O
's	O
contrib	O
repository	B-Application
.	O
</s>
<s>
In	O
March	O
1999	O
,	O
Fourdan	O
began	O
a	O
complete	O
rewrite	O
of	O
the	O
project	O
based	O
on	O
GTK	B-Application
,	O
a	O
non-proprietary	O
toolkit	O
then	O
rising	O
in	O
popularity	O
.	O
</s>
<s>
The	O
result	O
was	O
Xfce	O
3.0	O
,	O
licensed	O
under	O
the	O
GPL	B-License
.	O
</s>
<s>
Along	O
with	O
being	O
based	O
completely	O
on	O
free	B-Application
software	I-Application
,	O
the	O
project	O
gained	O
GTK	B-Application
drag-and-drop	O
support	O
,	O
native	O
language	O
support	O
,	O
and	O
improved	O
configurability	O
.	O
</s>
<s>
Xfce	O
was	O
uploaded	O
to	O
SourceForge.net	B-Application
in	O
February	O
2001	O
,	O
starting	O
with	O
version	O
3.8.1	O
.	O
</s>
<s>
In	O
version	O
4.0.0	O
,	O
released	O
25	O
September	O
2003	O
,	O
Xfce	O
was	O
upgraded	O
to	O
use	O
the	O
GTK	B-Application
2	O
libraries	B-Library
.	O
</s>
<s>
Changes	O
in	O
4.2.0	O
,	O
released	O
16	O
January	O
2005	O
,	O
included	O
a	O
compositing	B-Operating_System
manager	I-Operating_System
for	O
Xfwm	O
which	O
added	O
built-in	O
support	O
for	O
transparency	O
and	O
drop	O
shadows	O
,	O
as	O
well	O
as	O
a	O
new	O
default	O
SVG	B-Application
icon	O
set	O
.	O
</s>
<s>
This	O
included	O
the	O
Thunar	B-Language
file	B-Application
manager	I-Application
,	O
a	O
replacement	O
for	O
Xffm	O
.	O
</s>
<s>
Also	O
,	O
various	O
improvements	O
were	O
made	O
to	O
the	O
panel	O
to	O
prevent	O
buggy	O
plugins	B-Application
from	O
crashing	O
the	O
whole	O
panel	O
.	O
</s>
<s>
This	O
version	O
included	O
changes	O
such	O
as	O
the	O
replacement	O
of	O
ThunarVFS	O
and	O
HAL	B-Application
with	O
GIO	B-Language
,	O
udev	B-Application
,	O
ConsoleKit	O
and	O
PolicyKit	B-Language
,	O
and	O
new	O
utilities	O
for	O
browsing	O
remote	O
network	B-General_Concept
shares	I-General_Concept
using	O
several	O
protocols	O
including	O
SFTP	B-Protocol
,	O
SMB	B-Operating_System
,	O
and	O
FTP	B-Protocol
.	O
</s>
<s>
Window	O
clutter	B-Language
was	O
reduced	O
by	O
merging	O
all	O
Thunar	B-Language
file	O
progress	O
dialog	O
boxes	O
into	O
a	O
single	O
dialog	O
.	O
</s>
<s>
4.8	O
also	O
introduced	O
a	O
new	O
menu	O
plugin	B-Application
to	O
view	O
directories	O
.	O
</s>
<s>
The	O
4.8	O
plugin	B-Application
framework	O
remains	O
compatible	O
with	O
4.6	O
plugins	B-Application
.	O
</s>
<s>
The	O
display	O
configuration	O
dialog	O
in	O
4.8	O
supports	O
RandR	O
1.2	O
,	O
detecting	O
screens	O
automatically	O
and	O
allowing	O
users	O
to	O
pick	O
their	O
preferred	O
display	B-General_Concept
resolution	I-General_Concept
,	O
refresh	O
rate	O
,	O
and	O
display	O
rotation	O
.	O
</s>
<s>
The	O
4.8	O
development	O
cycle	O
was	O
the	O
first	O
to	O
use	O
the	O
new	O
release	O
strategy	O
formed	O
after	O
the	O
"	O
Xfce	O
Release	O
and	O
Development	O
Model	O
"	O
developed	O
at	O
the	O
Ubuntu	B-Operating_System
Desktop	O
Summit	O
in	O
May	O
2009	O
.	O
</s>
<s>
A	O
new	O
web	O
application	O
was	O
employed	O
to	O
make	O
release	O
management	O
easier	O
,	O
and	O
a	O
dedicated	O
Transifex	B-General_Concept
server	O
was	O
set	O
up	O
for	O
Xfce	O
translators	O
.	O
</s>
<s>
Xfce	O
4.10	O
,	O
released	O
28	O
April	O
2012	O
,	O
introduced	O
a	O
vertical	O
display	O
mode	O
for	O
the	O
panel	O
and	O
moved	O
much	O
of	O
the	O
to	O
an	O
online	O
wiki	B-Protocol
.	O
</s>
<s>
New	O
window	B-Application
manager	I-Application
features	O
include	O
an	O
Alt+Tab	O
dialog	O
,	O
and	O
smart	O
multi-monitor	O
handling	O
.	O
</s>
<s>
Also	O
,	O
a	O
new	O
power	O
management	O
plugin	B-Application
for	O
the	O
panel	O
's	O
notification	O
area	O
was	O
introduced	O
,	O
as	O
well	O
as	O
a	O
re-written	O
text	B-Application
editor	I-Application
and	O
an	O
enhanced	O
file	B-Application
manager	I-Application
.	O
</s>
<s>
Xfce	O
4.12	O
also	O
started	O
the	O
transition	O
to	O
GTK	B-Application
3	O
by	O
porting	O
application	O
and	O
supporting	O
plugins	B-Application
and	O
bookmarks	O
.	O
</s>
<s>
With	O
4.12	O
,	O
the	O
project	O
reiterated	O
its	O
commitment	O
to	O
Unix-like	B-Operating_System
platforms	O
other	O
than	O
Linux	B-Application
by	O
featuring	O
OpenBSD	B-Operating_System
screenshots	O
.	O
</s>
<s>
Xfce	O
4.13	O
is	O
the	O
development	O
release	O
during	O
the	O
transition	O
of	O
porting	O
components	O
to	O
be	O
fully	O
GTK3-compatible	O
,	O
including	O
xfce-panel	O
and	O
xfce-settings	O
.	O
</s>
<s>
The	O
main	O
goals	O
of	O
the	O
release	O
included	O
porting	O
the	O
remaining	O
core	O
components	O
from	O
GTK	B-Application
2	O
to	O
GTK	B-Application
3	O
;	O
replacing	O
the	O
dependency	O
on	O
with	O
GDBus	O
,	O
GNOME	B-Application
's	O
implementation	O
of	O
the	O
D-Bus	O
specification	O
;	O
and	O
removing	O
deprecated	O
widgets	O
.	O
</s>
<s>
The	O
minimum	O
GTK	B-Application
3	O
version	O
was	O
bumped	O
from	O
3.14	O
to	O
3.22	O
.	O
</s>
<s>
Some	O
notable	O
changes	O
in	O
this	O
release	O
include	O
new	O
icons	O
with	O
a	O
more	O
consistent	O
color	O
palette	O
;	O
improved	O
interfaces	O
for	O
changing	O
system	O
settings	O
;	O
various	O
panel	O
improvements	O
like	O
animations	O
for	O
hiding	O
,	O
a	O
new	O
notification	O
plugin	B-Application
with	O
support	O
for	O
both	O
legacy	O
SysTray	O
and	O
modern	O
StatusNotifier	O
items	O
,	O
and	O
better	O
support	O
for	O
dark	O
themes	O
;	O
and	O
more	O
information	O
included	O
in	O
the	O
About	O
dialog	O
.	O
</s>
<s>
This	O
release	O
mainly	O
focused	O
on	O
new	O
features	O
and	O
improvements	O
to	O
the	O
Thunar	B-Language
file	B-Application
manager	I-Application
including	O
an	O
image	O
preview	O
sidebar	O
,	O
split	O
view	O
,	O
recursive	O
file	O
searching	O
,	O
better	O
mime	O
type	O
handling	O
,	O
per-file	O
color	O
highlighting	O
,	O
undoing	O
up	O
to	O
10	O
actions	O
,	O
a	O
recently	O
opened	O
files	O
location	O
,	O
restoring	O
open	O
tabs	O
on	O
startup	O
,	O
and	O
a	O
customizable	O
toolbar	O
.	O
</s>
<s>
Other	O
changes	O
include	O
a	O
keyboard	O
shortcut	O
editor	O
and	O
merging	O
the	O
date	O
and	O
time	O
plugins	B-Application
.	O
</s>
<s>
Applications	O
developed	O
by	O
the	O
Xfce	O
team	O
are	O
based	O
on	O
GTK	B-Application
and	O
self-developed	O
Xfce	O
libraries	B-Library
.	O
</s>
<s>
Other	O
than	O
Xfce	O
itself	O
,	O
there	O
are	O
third-party	O
programs	O
which	O
use	O
the	O
Xfce	O
libraries	B-Library
.	O
</s>
<s>
Xfce	O
Panel	O
is	O
a	O
highly	O
configurable	O
taskbar	O
with	O
a	O
rich	O
collection	O
of	O
plug-ins	B-Application
available	O
for	O
it	O
.	O
</s>
<s>
Many	O
aspects	O
of	O
the	O
panel	O
and	O
its	O
plug-ins	B-Application
can	O
be	O
configured	O
easily	O
through	O
graphical	O
dialogs	O
,	O
but	O
also	O
by	O
GTK	B-Application
style	O
properties	O
and	O
hidden	O
Xfconf	O
settings	O
.	O
</s>
<s>
A	O
terminal	B-Application
emulator	I-Application
is	O
provided	O
as	O
part	O
of	O
the	O
Xfce	O
project	O
,	O
but	O
it	O
can	O
be	O
used	O
in	O
other	O
X	O
Window	O
System	O
environments	O
as	O
well	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
replace	O
GNOME	B-Language
Terminal	I-Language
,	O
which	O
depends	O
on	O
the	O
GNOME	B-Application
libraries	B-Library
.	O
</s>
<s>
Like	O
GNOME	B-Language
Terminal	I-Language
,	O
though	O
,	O
it	O
is	O
based	O
on	O
the	O
VTE	O
library	O
.	O
</s>
<s>
Xfce	B-Language
Terminal	I-Language
can	O
be	O
configured	O
to	O
offer	O
a	O
varying	O
background	O
color	O
for	O
each	O
tab	O
.	O
</s>
<s>
It	O
can	O
also	O
be	O
used	O
as	O
a	O
drop-down	O
terminal	B-Application
emulator	I-Application
,	O
similar	O
to	O
Guake	O
or	O
Tilda	O
.	O
</s>
<s>
Xfwm	O
is	O
a	O
window	B-Application
manager	I-Application
,	O
supporting	O
custom	O
themes	O
.	O
</s>
<s>
Starting	O
with	O
version	O
4.2	O
,	O
Xfwm	O
integrates	O
its	O
own	O
compositing	B-Operating_System
manager	I-Operating_System
.	O
</s>
<s>
It	O
is	O
also	O
capable	O
of	O
performing	O
indexing	B-Application
by	O
using	O
an	O
mlocate	B-Application
database	O
.	O
</s>
<s>
Thunar	B-Language
is	O
the	O
default	O
file	B-Application
manager	I-Application
for	O
Xfce	O
,	O
replacing	O
Xffm	O
.	O
</s>
<s>
It	O
resembles	O
GNOME	B-Application
's	O
Nautilus	B-Language
,	O
and	O
is	O
designed	O
for	O
speed	O
and	O
a	O
low	O
memory	O
footprint	O
,	O
as	O
well	O
as	O
being	O
highly	O
customizable	O
through	O
plugins	B-Application
.	O
</s>
<s>
Xfce	O
also	O
has	O
a	O
lightweight	O
archive	B-Application
manager	I-Application
called	O
Xarchiver	O
,	O
but	O
this	O
is	O
not	O
part	O
of	O
the	O
core	O
Xfce	O
4.4.0	O
.	O
</s>
<s>
More	O
recently	O
,	O
Squeeze	O
has	O
been	O
started	O
as	O
an	O
archive	B-Application
manager	I-Application
designed	O
to	O
integrate	O
better	O
into	O
the	O
Xfce	O
desktop	O
,	O
and	O
though	O
no	O
releases	O
have	O
been	O
made	O
since	O
2008	O
,	O
the	O
git	O
repository	B-Application
of	O
squeeze	O
has	O
been	O
active	O
and	O
this	O
version	O
is	O
more	O
feature-rich	O
than	O
the	O
last	O
stable	O
release	O
.	O
</s>
<s>
vdirsyncer	O
to	O
sync	O
via	O
CalDAV	B-Protocol
.	O
</s>
<s>
It	O
also	O
includes	O
a	O
panel	O
clock	O
plugin	B-Application
and	O
an	O
international	O
clock	O
application	O
capable	O
of	O
simultaneously	O
showing	O
clocks	O
from	O
several	O
different	O
time	O
zones	O
.	O
</s>
<s>
With	O
Xfce	O
4.16	O
,	O
and	O
the	O
dropping	O
of	O
GTK2	B-Application
support	O
for	O
panel	O
plugins	B-Application
,	O
orage	O
was	O
replaced	O
with	O
DateTime	O
plugin	B-Application
.	O
</s>
<s>
Mousepad	B-Language
is	O
the	O
default	O
text	B-Application
editor	I-Application
for	O
Xfce	O
in	O
some	O
Linux	B-Application
distributions	I-Application
,	O
including	O
Xubuntu	B-Application
.	O
</s>
<s>
Mousepad	B-Language
aims	O
to	O
be	O
an	O
easy-to-use	O
and	O
fast	O
editor	O
,	O
meant	O
for	O
quickly	O
editing	O
text	O
files	O
,	O
not	O
a	O
software	O
development	O
environment	O
or	O
an	O
editor	O
with	O
a	O
large	O
plugin	B-Application
ecosystem	O
.	O
</s>
<s>
It	O
closely	O
follows	O
the	O
GTK-system	O
release	O
cycle	O
.	O
</s>
<s>
It	O
originated	O
as	O
a	O
fork	B-Application
of	O
Leafpad	B-Language
,	O
was	O
developed	O
by	O
Erik	O
Harrison	O
and	O
Nick	O
Schermer	O
,	O
but	O
has	O
since	O
been	O
rewritten	O
from	O
scratch	O
.	O
</s>
<s>
Parole	O
is	O
a	O
simple	O
media	O
player	O
based	O
on	O
the	O
GStreamer	B-Language
framework	O
.	O
</s>
<s>
It	O
is	O
designed	O
with	O
simplicity	O
,	O
speed	O
and	O
resource	O
usage	O
in	O
mind	O
,	O
and	O
is	O
part	O
of	O
the	O
Xfce	O
Goodies	O
and	O
uses	O
at	O
least	O
three	O
libraries	B-Library
from	O
the	O
Xfce	O
project	O
(	O
libxfce4ui	O
,	O
libxfce4util	O
,	O
and	O
libxfconf	O
)	O
.	O
</s>
<s>
It	O
is	O
similar	O
to	O
GNOME	B-Language
Videos	I-Language
,	O
but	O
it	O
has	O
some	O
advantages	O
and	O
disadvantages	O
compared	O
to	O
it	O
:	O
</s>
<s>
An	O
image	B-Application
viewer	I-Application
(	O
supporting	O
slideshow	O
mode	O
)	O
.	O
</s>
<s>
A	O
CD/DVD	O
optical	B-Application
disc	I-Application
authoring	I-Application
software	O
.	O
</s>
<s>
A	O
screen	B-General_Concept
saver	I-General_Concept
and	O
session-locking	O
program	O
first	O
packaged	O
with	O
the	O
4.14	O
release	O
of	O
Xfce	O
.	O
</s>
<s>
It	O
uses	O
screensaver	B-General_Concept
themes	O
compatible	O
with	O
Xscreensaver	O
.	O
</s>
<s>
Although	O
forked	O
from	O
MATE	B-Language
Screensaver	B-General_Concept
,	O
it	O
depends	O
only	O
on	O
Xfce	O
libraries	B-Library
.	O
</s>
<s>
Xfce	O
is	O
included	O
as	O
one	O
of	O
the	O
graphical	B-Application
user	I-Application
interfaces	I-Application
on	O
the	O
Pandora	B-Device
handheld	O
gaming	O
system	O
.	O
</s>
<s>
It	O
is	O
the	O
default	O
desktop	O
environment	O
in	O
the	O
following	O
Linux	B-Application
distributions	I-Application
:	O
</s>
<s>
It	O
is	O
also	O
included	O
as	O
a	O
standard	O
desktop	O
option	O
on	O
FreeBSD	B-Operating_System
and	O
derivatives	O
such	O
as	O
GhostBSD	B-Application
,	O
and	O
in	O
many	O
other	O
Linux	B-Application
distributions	I-Application
not	O
listed	O
above	O
,	O
including	O
Arch	O
Linux	B-Application
,	O
Debian	O
,	O
Ubuntu	B-Operating_System
,	O
openSUSE	B-Operating_System
,	O
Fedora	O
,	O
Kali	O
,	O
Linux	B-Application
Mint	I-Application
,	O
Slackware	B-Application
,	O
Mageia	O
,	O
OpenMandriva	O
,	O
Void	O
Linux	B-Application
and	O
Zorin	O
OS	O
.	O
</s>
<s>
Kali	O
Linux	B-Application
also	O
uses	O
Xfce	O
as	O
the	O
desktop	O
environment	O
when	O
running	O
on	O
the	O
ARM	O
platform	O
.	O
</s>
<s>
In	O
2013	O
,	O
Debian	O
briefly	O
made	O
it	O
the	O
default	O
environment	O
,	O
replacing	O
GNOME	B-Application
.	O
</s>
