<s>
Uzbl	B-Protocol
is	O
a	O
discontinued	O
free	B-License
and	I-License
open-source	I-License
minimalist	B-Device
web	B-Application
browser	I-Application
designed	O
for	O
simplicity	O
and	O
adherence	O
to	O
the	B-Operating_System
Unix	I-Operating_System
philosophy	I-Operating_System
.	O
</s>
<s>
The	O
core	O
component	O
of	O
Uzbl	B-Protocol
is	O
written	O
in	O
C	B-Language
,	O
but	O
other	O
languages	O
are	O
also	O
used	O
,	O
most	O
notably	O
Python	B-Language
.	O
</s>
<s>
All	O
parts	O
of	O
the	O
Uzbl	B-Protocol
project	O
are	O
released	O
as	O
free	O
software	O
under	O
GNU	B-License
GPL-3.0-only	I-License
.	O
</s>
<s>
Development	O
of	O
Uzbl	B-Protocol
is	O
still	O
in	O
alpha	O
stage	O
.	O
</s>
<s>
Uzbl	B-Protocol
was	O
originally	O
designed	O
for	O
Arch	O
Linux	O
,	O
but	O
operates	O
with	O
other	O
Linux	B-Application
distributions	I-Application
and	O
BSD	B-Operating_System
systems	O
.	O
</s>
<s>
Compilation	O
guides	O
are	O
available	O
for	O
Gentoo	B-Application
Linux	I-Application
,	O
Ubuntu	B-Operating_System
,	O
MacPorts	B-Application
,	O
and	O
Nix	B-Application
package	I-Application
manager	I-Application
.	O
</s>
<s>
Despite	O
being	O
in	O
early	O
stages	O
of	O
development	O
,	O
Uzbl	B-Protocol
has	O
gained	O
prominence	O
as	O
a	O
minimalist	B-Device
browser	B-Application
.	O
</s>
<s>
Uzbl	B-Protocol
follows	O
the	B-Operating_System
Unix	I-Operating_System
philosophy	I-Operating_System
,	O
“	O
Write	O
programs	O
that	O
do	O
one	O
thing	O
and	O
do	O
it	O
well	O
.	O
</s>
<s>
Write	O
programs	O
to	O
handle	O
text	O
streams	O
,	O
because	O
that	O
is	O
a	O
universal	O
interface.	O
”	O
As	O
a	O
result	O
,	O
Uzbl	B-Protocol
does	O
not	O
contain	O
many	O
of	O
the	O
features	O
of	O
other	O
browsers	B-Application
.	O
</s>
<s>
Uzbl	B-Protocol
has	O
none	O
of	O
its	O
own	O
tool	O
bars	O
or	O
graphical	O
control	O
elements	O
,	O
and	O
does	O
not	O
manage	O
bookmarks	O
,	O
history	O
,	O
downloads	O
,	O
or	O
cookies	B-Application
,	O
leaving	O
them	O
to	O
be	O
handled	O
by	O
external	O
programs	O
or	O
scripts	O
.	O
</s>
<s>
For	O
interaction	O
it	O
can	O
read	O
input	O
from	O
standard	O
input	O
(	O
FIFO	B-Operating_System
pipe	B-Operating_System
)	O
or	O
from	O
POSIX	B-Protocol
local	I-Protocol
IPC	I-Protocol
socket	I-Protocol
or	O
it	O
can	O
be	O
passed	O
text	B-General_Concept
files	I-General_Concept
such	O
as	O
a	O
configuration	B-Protocol
file	I-Protocol
.	O
</s>
<s>
Uzbl	B-Protocol
uses	O
the	O
WebKit	B-Language
layout	O
engine	O
,	O
and	O
therefore	O
inherits	O
support	O
for	O
many	O
web	O
standards	O
,	O
including	O
HTML	B-Language
,	O
XML	B-Protocol
,	O
XPath	B-Language
,	O
Cascading	B-Language
Style	I-Language
Sheets	I-Language
,	O
ECMAScript	B-Language
(	O
JavaScript	B-Language
)	O
,	O
DOM	B-General_Concept
,	O
and	O
SVG	B-Application
,	O
passing	O
the	O
Acid3	O
browser	B-Application
test	O
.	O
</s>
<s>
Web	B-Language
kit	I-Language
supports	O
Netscape-style	O
plugins	O
such	O
as	O
Adobe	B-Operating_System
Flash	I-Operating_System
Player	I-Operating_System
and	O
MPlayer	B-Application
.	O
</s>
<s>
Uzbl	B-Protocol
's	O
design	O
focuses	O
on	O
keyboard	O
control	O
and	O
hot	O
keys	O
,	O
although	O
it	O
also	O
supports	O
mouse	B-Device
and	I-Device
other	I-Device
pointing	I-Device
device	I-Device
input	O
.	O
</s>
<s>
Like	O
the	O
pentadactyl	B-Operating_System
and	O
vimperator	B-Operating_System
Firefox	O
extensions	O
,	O
Uzbl	B-Protocol
employs	O
a	O
mode-based	O
interface	O
derived	O
from	O
the	O
vi	B-Application
and	O
Vim	B-Application
text	I-Application
editors	I-Application
.	O
</s>
<s>
While	O
this	O
mode-based	O
interface	O
creates	O
an	O
initially	O
steep	O
learning	B-General_Concept
curve	I-General_Concept
,	O
once	O
learned	O
it	O
typically	O
allows	O
a	O
user	O
greater	O
speed	O
and	O
convenience	O
than	O
many	O
other	O
browsers	B-Application
.	O
</s>
<s>
Uzbl	B-Protocol
allows	O
configuration	O
of	O
the	O
hot	O
keys	O
used	O
.	O
</s>
<s>
The	O
idea	O
of	O
creating	O
a	O
new	O
web	B-Application
browser	I-Application
started	O
in	O
spring	O
2009	O
on	O
the	O
internet	B-Application
forums	I-Application
of	O
Arch	O
Linux	O
.	O
</s>
<s>
Dieter	O
Plaetinck	O
started	O
the	O
development	O
of	O
the	O
browser	B-Application
and	O
was	O
then	O
supported	O
by	O
other	O
developers	O
.	O
</s>
<s>
Besides	O
compilation	O
guides	O
for	O
a	O
series	O
of	O
Linux	B-Application
distributions	I-Application
and	O
Mac	O
OS	O
X/Darwin	O
(	O
Mac	B-Application
Ports	I-Application
)	O
several	O
pre-compiled	O
binaries	O
are	O
available	O
,	O
although	O
officially	O
there	O
is	O
not	O
yet	O
a	O
version	O
marked	O
as	O
stable	O
.	O
</s>
<s>
On	O
September	O
21	O
,	O
2009	O
,	O
Uzbl	B-Protocol
was	O
accepted	O
into	O
the	O
Debian	O
operating	O
system	O
and	O
was	O
migrated	O
to	O
its	O
testing	O
branch	O
on	O
October	O
2	O
,	O
2009	O
.	O
</s>
