<s>
PureOS	B-Language
is	O
a	O
Linux	B-Application
distribution	I-Application
focusing	O
on	O
privacy	O
and	O
security	O
,	O
using	O
the	O
GNOME	B-Application
desktop	I-Application
environment	I-Application
.	O
</s>
<s>
It	O
is	O
maintained	O
by	O
Purism	O
for	O
use	O
in	O
the	O
company	O
's	O
Librem	B-Device
laptop	O
computers	O
as	O
well	O
as	O
the	O
Librem	B-Application
5	I-Application
smartphone	O
.	O
</s>
<s>
PureOS	B-Language
is	O
designed	O
to	O
include	O
only	O
free	B-Application
software	I-Application
,	O
and	O
is	O
included	O
in	O
the	O
list	O
of	O
Free	O
Linux	B-Application
distributions	I-Application
published	O
by	O
the	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
.	O
</s>
<s>
PureOS	B-Language
is	O
a	O
Debian-based	O
Linux	B-Application
distribution	I-Application
,	O
merging	O
open-source	B-Application
software	I-Application
packages	O
from	O
the	O
Debian	O
“	O
testing	O
”	O
main	O
archive	O
using	O
a	O
hybrid	O
point	O
release	O
and	O
rolling	O
release	O
model	O
.	O
</s>
<s>
The	O
default	O
web	O
browser	O
in	O
PureOS	B-Language
is	O
called	O
PureBrowser	B-Language
,	O
a	O
variant	O
of	O
GNOME	B-Language
Web	I-Language
focusing	O
on	O
privacy	O
.	O
</s>
<s>
The	O
default	O
search	O
engine	O
in	O
PureBrowser	B-Language
is	O
DuckDuckGo	B-Application
.	O
</s>
