<s>
qutebrowser	B-Application
(	O
pronounced	O
"	O
cute	O
browser	B-Application
"	O
)	O
is	O
a	O
Chromium-based	O
web	B-Application
browser	I-Application
for	O
Linux	B-Application
,	O
Windows	O
,	O
and	O
macOS	B-Application
operating	O
systems	O
with	O
Vim-style	O
key	O
bindings	O
and	O
a	O
minimal	B-Device
GUI	B-Application
.	O
</s>
<s>
It	O
is	O
keyboard-driven	O
and	O
is	O
inspired	O
by	O
similar	O
software	O
such	O
as	O
Vimperator	B-Operating_System
and	O
dwb	O
.	O
</s>
<s>
It	O
uses	O
DuckDuckGo	B-Application
as	O
the	O
default	O
search	B-Application
engine	I-Application
.	O
</s>
<s>
qutebrowser	B-Application
is	O
included	O
in	O
the	O
native	O
repositories	B-Application
of	O
Linux	B-Application
distributions	I-Application
such	O
as	O
Fedora	O
and	O
Arch	O
Linux	B-Application
.	O
</s>
<s>
qutebrowser	B-Application
is	O
developed	O
by	O
Florian	O
Bruhin	O
,	O
for	O
which	O
he	O
received	O
a	O
CH	O
Open	O
Source	O
award	O
in	O
2016	O
.	O
</s>
<s>
As	O
in	O
Vim	B-Application
and	O
vi	B-Application
,	O
the	O
browser	B-Application
has	O
a	O
command	O
mode	O
and	O
an	O
insert	O
mode	O
.	O
</s>
<s>
qutebrowser	B-Application
is	O
both	O
written	O
in	O
and	O
configured	O
in	O
Python	B-Language
.	O
</s>
<s>
Through	O
the	O
configuration	O
file	O
custom	O
functionality	O
can	O
be	O
added	O
,	O
including	O
custom	O
key	O
bindings	O
,	O
per-site	O
settings	O
,	O
and	O
arbitrary	O
Python	B-Language
code	I-Language
that	O
can	O
interact	O
with	O
your	O
browser	B-Application
or	O
your	O
system	O
.	O
</s>
<s>
Since	O
version	O
2.0.0	O
,	O
qutebrowser	B-Application
supports	O
blocking	O
ads	O
using	O
the	O
python	B-Language
adblock	O
library	O
.	O
</s>
<s>
For	O
users	O
that	O
do	O
n't	O
have	O
the	O
adblock	O
library	O
installed	O
or	O
use	O
an	O
older	O
version	O
of	O
qutebrowser	B-Application
,	O
a	O
simpler	O
built-in	O
adblocker	O
can	O
be	O
used	O
and	O
modified	O
using	O
the	O
blocked-hosts	O
file	O
that	O
comes	O
with	O
qutebrowser	B-Application
.	O
</s>
<s>
In	O
July	O
2018	O
,	O
it	O
was	O
found	O
that	O
all	O
versions	O
of	O
qutebrowser	B-Application
prior	O
to	O
1.4.1	O
have	O
a	O
cross-site	B-Protocol
request	I-Protocol
forgery	I-Protocol
vulnerability	O
that	O
allowed	O
websites	O
to	O
change	O
qutebrowser	B-Application
settings	O
and	O
,	O
via	O
settings	O
like	O
,	O
possibly	O
execute	O
arbitrary	O
code	O
.	O
</s>
