<s>
A	O
site-specific	B-Protocol
browser	I-Protocol
(	O
SSB	O
)	O
is	O
a	O
software	B-Application
application	I-Application
that	O
is	O
dedicated	O
to	O
accessing	O
pages	O
from	O
a	O
single	O
source	O
(	O
site	O
)	O
on	O
a	O
computer	O
network	O
such	O
as	O
the	O
Internet	O
or	O
a	O
private	O
intranet	B-General_Concept
.	O
</s>
<s>
SSBs	O
typically	O
simplify	O
the	O
more	O
complex	O
functions	O
of	O
a	O
web	B-Application
browser	I-Application
by	O
excluding	O
the	O
menus	O
,	O
toolbars	O
and	O
browser	B-Application
GUI	O
associated	O
with	O
functions	O
that	O
are	O
external	O
to	O
the	O
workings	O
of	O
a	O
single	O
site	O
.	O
</s>
<s>
Site-specific	B-Protocol
browsers	I-Protocol
are	O
often	O
implemented	O
through	O
the	O
use	O
of	O
existing	O
application	B-Application
frameworks	I-Application
such	O
as	O
Gecko	B-Language
,	O
WebKit	B-Language
,	O
Microsoft	O
's	O
Internet	B-Application
Explorer	I-Application
(	O
the	O
underlying	O
layout	B-Protocol
engines	I-Protocol
,	O
specifically	O
Trident	B-Application
and	O
JScript	B-Language
)	O
and	O
Opera	O
's	O
Presto	B-Application
.	O
</s>
<s>
SSBs	O
built	O
upon	O
these	O
frameworks	O
allow	O
web	B-Application
applications	I-Application
and	O
social	O
networking	O
tools	O
to	O
start	O
with	O
desktop	O
icons	O
launching	O
in	O
a	O
manner	O
similar	O
to	O
standard	O
non-browser	O
applications	O
.	O
</s>
<s>
Some	O
technologies	O
,	O
including	O
Adobe	O
's	O
AIR	B-Operating_System
and	O
JavaFX	B-Application
use	O
specialized	O
development	B-Application
kits	I-Application
that	O
can	O
create	O
cross-platform	B-Operating_System
SSBs	O
.	O
</s>
<s>
Since	O
version	O
6.0	O
,	O
the	O
Curl	B-Language
platform	O
has	O
offered	O
and	O
the	O
class	O
which	O
can	O
be	O
used	O
as	O
an	O
SSB	O
on	O
the	O
desktop	O
.	O
</s>
<s>
One	O
early	O
example	O
of	O
an	O
SSB	O
is	O
MacDICT	O
,	O
a	O
Mac	B-Operating_System
OS	I-Operating_System
9	I-Operating_System
application	O
that	O
accessed	O
various	O
web	B-Language
sites	O
to	O
define	O
,	O
translate	O
,	O
or	O
find	O
synonyms	O
for	O
words	O
typed	O
into	O
a	O
text	O
box	O
.	O
</s>
<s>
A	O
more	O
current	O
example	O
is	O
WeatherBug	B-Operating_System
Desktop	I-Operating_System
,	O
which	O
is	O
a	O
standalone	O
client	O
accessing	O
information	O
also	O
available	O
at	O
the	O
weatherbug.com	O
website	O
but	O
configured	O
to	O
display	O
real-time	O
weather	O
data	O
for	O
a	O
user-specified	O
location	O
.	O
</s>
<s>
The	O
first	O
general	O
purpose	O
SSB	O
is	O
believed	O
to	O
be	O
Bubbles	O
which	O
launched	O
late	O
2005	O
on	O
the	O
Windows	O
platform	O
and	O
later	O
coined	O
the	O
term	O
"	O
Site	O
Specific	O
Extensions	O
"	O
for	O
SSB	O
userscripts	B-Operating_System
and	O
introduced	O
the	O
SSB	O
Javascript	O
API	O
.	O
</s>
<s>
On	O
2	O
September	O
2008	O
,	O
the	O
Google	B-Application
Chrome	I-Application
web	B-Application
browser	I-Application
was	O
released	O
for	O
Windows	O
.	O
</s>
<s>
Although	O
Chrome	B-Application
is	O
a	O
full	O
featured	O
browser	B-Application
,	O
it	O
also	O
contains	O
a	O
"	O
Create	O
application	O
shortcut	O
"	O
menu	O
item	O
that	O
adds	O
the	O
ability	O
to	O
create	O
a	O
stand-alone	O
SSB	O
window	O
for	O
any	O
site	O
.	O
</s>
<s>
This	O
is	O
similar	O
to	O
Mozilla	B-Language
Prism	I-Language
(	O
formerly	O
WebRunner	O
)	O
,	O
now	O
discontinued	O
,	O
but	O
which	O
is	O
available	O
as	O
an	O
add-on	O
to	O
the	O
Firefox	B-Application
browser	I-Application
version	O
3	O
.	O
</s>
<s>
Email	O
:	O
dedicated	O
to	O
webmail	B-Protocol
sites	O
such	O
as	O
Gmail	B-Application
,	O
Hotmail	B-Operating_System
,	O
or	O
Yahoo	O
!	O
</s>
<s>
Mapping	O
:	O
SSB	O
specific	O
to	O
maps	O
from	O
providers	O
like	O
Google	B-Application
Maps	I-Application
,	O
Mapquest	O
,	O
or	O
Yahoo	O
!	O
</s>
<s>
As	O
of	O
2019	O
,	O
Firefox	B-Application
and	O
Google	B-Application
Chrome	I-Application
on	O
Android	O
and	O
Safari	B-Application
on	O
iOS	O
allow	O
the	O
creation	O
of	O
site-specific	B-Protocol
browsers	I-Protocol
for	O
progressive	B-Application
web	I-Application
applications	I-Application
(	O
PWAs	B-Application
)	O
.	O
</s>
<s>
Utilities	O
that	O
produce	O
site-specific	B-Protocol
browsers	I-Protocol
:	O
</s>
<s>
iOS	O
Safari	B-Application
:	O
Share	O
-->	O
Add	O
to	O
Home	O
Screen	O
.	O
</s>
<s>
Rich	B-Application
web	I-Application
application	I-Application
platforms	O
:	O
</s>
