<s>
elementary	O
OS	O
is	O
a	O
Linux	B-Application
distribution	I-Application
based	O
on	O
Ubuntu	B-Operating_System
LTS	I-Operating_System
.	O
</s>
<s>
It	O
promotes	O
itself	O
as	O
a	O
"	O
thoughtful	O
,	O
capable	O
,	O
and	O
ethical	O
"	O
replacement	O
to	O
macOS	B-Application
and	O
Windows	B-Application
and	O
has	O
a	O
pay-what-you-want	O
model	O
.	O
</s>
<s>
The	O
human	B-Application
interface	I-Application
guidelines	I-Application
of	O
the	O
elementary	O
OS	O
project	O
focus	O
on	O
immediate	O
usability	O
with	O
a	O
gentle	O
learning	B-General_Concept
curve	I-General_Concept
,	O
rather	O
than	O
full-fledged	O
customization	O
.	O
</s>
<s>
Wired	O
claimed	O
that	O
it	O
closely	O
resembled	O
macOS	B-Application
,	O
visually	O
and	O
in	O
user	O
experience	O
.	O
</s>
<s>
Pantheon	O
's	O
main	O
shell	B-Operating_System
is	O
deeply	O
integrated	O
with	O
other	O
elementary	O
OS	O
applications	O
,	O
like	O
Plank	O
(	O
a	O
dock	O
)	O
,	O
Web	O
(	O
the	O
default	O
web	B-Application
browser	I-Application
based	O
on	O
GNOME	B-Language
Web	I-Language
)	O
and	O
Code	O
(	O
a	O
simple	O
text	B-Application
editor	I-Application
)	O
.	O
</s>
<s>
This	O
distribution	O
uses	O
Gala	B-Language
as	O
its	O
window	B-Application
manager	I-Application
,	O
which	O
is	O
based	O
on	O
Mutter	B-Language
.	O
</s>
<s>
The	O
Pantheon	O
desktop	O
environment	O
is	O
built	O
on	O
top	O
of	O
the	O
GNOME	B-Application
software	O
base	O
,	O
i.e.	O
</s>
<s>
GTK	B-Application
,	O
GDK	B-Language
,	O
Cairo	B-Language
,	O
GLib	B-Language
,	O
(	O
including	O
GObject	B-Language
and	O
GIO	B-Language
)	O
,	O
GVfs	B-Language
,	O
Vala	B-Language
and	O
Tracker	B-Application
.	O
</s>
<s>
Code	O
:	O
code-focused	O
text	B-Application
editor	I-Application
,	O
comparable	O
to	O
gedit	B-Language
or	O
leafpad	B-Language
.	O
</s>
<s>
In	O
addition	O
to	O
its	O
x86	B-Operating_System
installer	O
,	O
Elementary	O
offers	O
various	O
experimental	O
builds	O
that	O
run	O
on	O
ARM	B-Architecture
devices	O
such	O
as	O
the	O
Pinebook	B-Device
Pro	O
and	O
Raspberry	B-Operating_System
Pi	I-Operating_System
4	O
.	O
</s>
<s>
The	O
elementary	O
OS	O
distribution	O
started	O
as	O
a	O
set	O
of	O
themes	B-Application
and	O
applications	O
designed	O
for	O
Ubuntu	B-Operating_System
which	O
later	O
became	O
its	O
own	O
Linux	B-Application
distribution	I-Application
.	O
</s>
<s>
Being	O
Ubuntu-based	O
,	O
it	O
is	O
compatible	O
with	O
its	O
repositories	B-Application
and	O
packages	O
,	O
and	O
prior	O
to	O
version	O
0.4	O
"	O
Loki	O
"	O
,	O
it	O
used	O
the	O
Ubuntu	B-Language
software	I-Language
centre	I-Language
to	O
handle	O
software	O
installation	O
and	O
uninstallation	O
.	O
</s>
<s>
However	O
,	O
after	O
the	O
release	O
of	O
Loki	O
,	O
Elementary	O
bundled	O
their	O
own	O
app	B-Application
store	I-Application
,	O
AppCenter	B-Language
,	O
whose	O
user	B-Application
interface	I-Application
is	O
designed	O
to	O
be	O
intuitive	O
for	O
new	O
users	O
without	O
consuming	O
excessive	O
resources	O
.	O
</s>
<s>
elementary	O
OS	O
is	O
based	O
on	O
Ubuntu	B-Operating_System
's	O
Long	O
Term	O
Support	O
releases	O
,	O
which	O
Ubuntu	B-Operating_System
's	O
developers	O
actively	O
maintain	O
for	O
bugs	O
and	O
security	O
for	O
years	O
even	O
as	O
development	O
continues	O
on	O
the	O
next	O
release	O
.	O
</s>
<s>
elementary	O
OS	O
founder	O
Danielle	O
Foré	O
has	O
said	O
that	O
the	O
project	O
is	O
not	O
designed	O
to	O
compete	O
with	O
existing	O
open	B-Application
source	I-Application
projects	O
,	O
but	O
to	O
expand	O
their	O
reach	O
.	O
</s>
<s>
It	O
also	O
seeks	O
to	O
create	O
open	B-Application
source	I-Application
jobs	O
through	O
developer	O
"	O
bounties	O
"	O
on	O
specific	O
tasks	O
.	O
</s>
<s>
The	O
first	O
stable	O
version	O
of	O
elementary	O
OS	O
was	O
Jupiter	O
,	O
published	O
on	O
31	O
March	O
2011	O
and	O
based	O
on	O
Ubuntu	B-Operating_System
10.10	O
.	O
</s>
<s>
In	O
November	O
2012	O
,	O
the	O
first	O
beta	O
version	O
of	O
elementary	O
OS	O
code-named	O
Luna	O
was	O
released	O
,	O
which	O
uses	O
Ubuntu	B-Operating_System
12.04	O
LTS	O
as	O
a	O
base	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
Ubuntu	B-Operating_System
14.04	O
LTS	O
,	O
which	O
was	O
released	O
in	O
April	O
2014	O
.	O
</s>
<s>
In	O
line	O
with	O
Elementary	O
's	O
intent	O
to	O
expand	O
the	O
reach	O
of	O
open	B-Application
source	I-Application
software	I-Application
,	O
73	O
percent	O
of	O
Freya	O
downloads	O
were	O
from	O
closed	O
source	O
operating	O
systems	O
.	O
</s>
<s>
In	O
2015	O
,	O
the	O
elementary	O
OS	O
developers	O
changed	O
the	O
download	O
page	O
to	O
default	O
to	O
a	O
monetary	O
amount	O
before	O
providing	O
a	O
direct	O
HTTP	B-Protocol
download	O
for	O
the	O
current	O
stable	O
release	O
.	O
</s>
<s>
Despite	O
the	O
fact	O
that	O
the	O
user	O
could	O
specify	O
any	O
amount	O
,	O
or	O
no	O
amount	O
at	O
all	O
,	O
it	O
sparked	O
controversy	O
about	O
how	O
such	O
practices	O
are	O
typically	O
not	O
perceived	O
as	O
being	O
in	O
alignment	O
with	O
FOSS	B-License
distribution	O
philosophies	O
.	O
</s>
<s>
In	O
a	O
review	O
of	O
all	O
Linux	B-Application
distributions	I-Application
,	O
Linux.com	B-Application
gave	O
elementary	O
OS	O
their	O
"	O
best-looking	O
distro	O
"	O
superlative	O
in	O
early	O
2016	O
.	O
</s>
<s>
The	O
reviewer	O
noted	O
its	O
developers	O
 '	O
design	O
background	O
,	O
their	O
influence	O
from	O
Mac	B-Application
OS	I-Application
X	I-Application
,	O
and	O
their	O
philosophy	O
of	O
prioritizing	O
strict	O
design	O
rules	O
and	O
applications	O
that	O
follow	O
these	O
rules	O
.	O
</s>
<s>
Loki	O
was	O
built	O
atop	O
the	O
Ubuntu	B-Operating_System
"	O
long-term	O
support	O
"	O
version	O
released	O
earlier	O
in	O
the	O
year	O
and	O
its	O
updated	O
kernel	B-Operating_System
(	O
4.4	O
)	O
.	O
</s>
<s>
The	O
operating	O
system	O
also	O
added	O
a	O
system-wide	O
integration	O
for	O
online	O
accounts	O
for	O
Last.fm	B-Application
and	O
FastMail	O
,	O
with	O
other	O
services	O
in	O
development	O
.	O
</s>
<s>
Loki	O
replaced	O
Freya	O
's	O
Midori	B-Protocol
web	I-Protocol
browser	I-Protocol
with	O
Epiphany	B-Language
,	O
a	O
WebKit2-based	O
browser	B-Application
with	O
better	O
performance	O
.	O
</s>
<s>
After	O
the	O
Yorba	O
Foundation	O
which	O
developed	O
the	O
Geary	B-Language
email	B-Protocol
client	I-Protocol
was	O
dissolved	O
,	O
elementary	O
OS	O
forked	O
Geary	B-Language
as	O
"	O
Mail	O
"	O
and	O
added	O
new	O
visual	O
and	O
integration	O
features	O
.	O
</s>
<s>
In	O
a	O
new	O
calendar	B-Application
feature	O
,	O
users	O
could	O
describe	O
events	O
in	O
natural	O
language	O
,	O
which	O
the	O
calendar	B-Application
program	O
interprets	O
and	O
places	O
into	O
the	O
proper	O
time	O
and	O
description	O
fields	O
when	O
creating	O
events	O
.	O
</s>
<s>
elementary	O
OS	O
also	O
created	O
its	O
own	O
app	B-Application
store	I-Application
that	O
simplifies	O
the	O
process	O
of	O
installing	O
and	O
updating	O
applications	O
.	O
</s>
<s>
Project	O
founder	O
Danielle	O
Foré	O
called	O
the	O
AppCenter	B-Language
the	O
biggest	O
feature	O
in	O
the	O
Loki	O
release	O
,	O
and	O
noted	O
its	O
speed	O
improvement	O
over	O
other	O
installation	O
methods	O
and	O
internal	O
development	O
benefits	O
for	O
departing	O
from	O
Ubuntu	B-Operating_System
's	O
upgrade	O
tools	O
.	O
</s>
<s>
Jack	O
Wallen	O
of	O
Linux.com	B-Application
praised	O
Loki	O
as	O
being	O
among	O
the	O
most	O
elegant	O
and	O
best-designed	O
Linux	B-Operating_System
desktops	O
.	O
</s>
<s>
He	O
found	O
the	O
web	B-Application
browser	I-Application
and	O
app	B-Application
store	I-Application
changes	O
to	O
be	O
significant	O
improvements	O
,	O
and	O
the	O
email	B-Protocol
client	I-Protocol
revamp	O
"	O
a	O
much-needed	O
breath	O
of	O
fresh	O
air	O
"	O
in	O
a	O
stagnating	O
field	O
.	O
</s>
<s>
Bryan	O
Lunduke	O
of	O
Network	O
World	O
lauded	O
Loki	O
's	O
performance	O
,	O
usability	O
,	O
polish	O
,	O
and	O
easy	O
installation	O
,	O
but	O
considered	O
it	O
a	O
better	O
fit	O
for	O
new	O
Linux	B-Operating_System
users	O
than	O
for	O
those	O
already	O
established	O
.	O
</s>
<s>
The	O
update	O
brings	O
changes	O
to	O
the	O
AppCenter	B-Language
pay-what-you-want	O
system	O
,	O
as	O
well	O
a	O
Night	O
Light	O
feature	O
for	O
changing	O
the	O
screen	O
color	O
at	O
night	O
,	O
and	O
adjustable	O
window	O
tiling	O
as	O
well	O
as	O
several	O
other	O
new	O
features	O
for	O
the	O
Pantheon	O
desktop	O
and	O
elementary	O
OS	O
applications	O
.	O
</s>
<s>
In	O
a	O
review	O
from	O
LinuxInsider	O
,	O
the	O
reviewer	O
called	O
the	O
operating	O
system	O
a	O
"	O
very	O
solid	O
Linux	B-Application
distro	I-Application
"	O
despite	O
criticizing	O
it	O
for	O
lacking	O
power-user	B-General_Concept
features	O
.	O
</s>
<s>
As	O
part	O
of	O
an	O
October	O
2019	O
update	O
,	O
elementary	O
OS	O
started	O
supporting	O
Flatpak	B-Language
out	O
of	O
the	O
box	O
,	O
thereby	O
making	O
it	O
easier	O
to	O
install	O
any	O
of	O
the	O
wide	O
array	O
of	O
Flatpak	B-Language
apps	O
that	O
are	O
available	O
.	O
</s>
<s>
elementary	O
OS	O
6.0	O
,	O
released	O
on	O
10	O
August	O
2021	O
under	O
the	O
codename	O
"	O
Odin	O
"	O
,	O
builds	O
upon	O
5.1	O
Hera	O
by	O
including	O
new	O
features	O
like	O
a	O
dark	O
style	O
and	O
the	O
ability	O
to	O
change	O
the	O
accent	O
color	O
,	O
Improved	O
notification	O
handling	O
and	O
a	O
new	O
Notification	O
Center	O
,	O
Online	O
accounts	O
for	O
things	O
like	O
IMAP	O
and	O
CalDAV	O
for	O
email	O
and	O
calendar	B-Application
respectively	O
,	O
Multi-touch	O
Gestures	O
for	O
app	O
switching	O
and	O
multiple	O
desktops	O
,	O
an	O
all	O
new	O
installer	O
,	O
a	O
firmware	O
updates	O
app	O
and	O
more	O
.	O
</s>
<s>
The	O
update	O
focuses	O
on	O
the	O
AppCenter	B-Language
,	O
new	O
features	O
and	O
settings	O
,	O
and	O
the	O
developer	O
platform	O
.	O
</s>
<s>
This	O
version	O
is	O
based	O
on	O
Ubuntu	B-Operating_System
22.04	O
LTS	O
.	O
</s>
