<s>
Mozilla	B-Language
Firefox	I-Language
2	I-Language
is	O
a	O
version	O
of	O
Firefox	B-Application
,	O
a	O
web	B-Application
browser	I-Application
released	O
on	O
October	O
24	O
,	O
2006	O
by	O
the	O
Mozilla	O
Corporation	O
.	O
</s>
<s>
Firefox	B-Language
2	I-Language
uses	O
version	O
1.8	O
of	O
the	O
Gecko	B-Language
layout	I-Language
engine	I-Language
for	O
displaying	O
web	O
pages	O
.	O
</s>
<s>
The	O
release	O
contained	O
many	O
new	O
features	O
not	O
found	O
in	O
Firefox	B-Application
1.5	O
,	O
including	O
improved	O
support	O
for	O
Scalable	B-Application
Vector	I-Application
Graphics	I-Application
(	O
SVG	B-Application
)	O
and	O
JavaScript	B-Language
1.7	I-Language
,	O
as	O
well	O
as	O
user	B-Application
interface	I-Application
changes	O
.	O
</s>
<s>
On	O
March	O
22	O
,	O
2006	O
,	O
the	O
first	O
alpha	O
version	O
of	O
Firefox	B-Language
2	I-Language
(	O
Bon	B-Language
Echo	I-Language
Alpha	I-Language
1	I-Language
)	O
was	O
released	O
.	O
</s>
<s>
Mozilla	O
Firefox	O
2.0.0.20	O
is	O
the	O
final	O
version	O
to	O
support	O
Windows	B-Device
NT	I-Device
4.0	I-Device
,	O
Windows	B-Device
98	I-Device
and	O
Windows	B-Device
Me	I-Device
,	O
although	O
it	O
can	O
run	O
on	O
Windows	B-Application
95	I-Application
and	O
Windows	B-Device
NT	I-Device
3.51	I-Device
using	O
tweaks	O
.	O
</s>
<s>
Mac	B-Application
OS	I-Application
X	I-Application
10.5	I-Application
support	O
was	O
added	O
October	O
18	O
,	O
2007	O
with	O
version	O
2.0.0.8	O
.	O
</s>
<s>
Firefox	B-Language
2.0	I-Language
featured	O
updates	O
to	O
tabbed	O
browsing	O
environment	O
,	O
the	O
extensions	B-Operating_System
manager	I-Operating_System
,	O
the	O
GUI	B-Application
,	O
and	O
the	O
find	O
,	O
search	O
,	O
and	O
software	O
update	O
engines	O
;	O
a	O
new	O
session	O
restore	O
feature	O
;	O
inline	O
spell	B-Application
checking	I-Application
;	O
and	O
an	O
anti-phishing	O
feature	O
which	O
was	O
implemented	O
by	O
Google	B-Application
as	O
an	O
extension	O
,	O
and	O
later	O
merged	O
into	O
the	O
program	O
itself	O
.	O
</s>
<s>
Mozilla	O
ended	O
support	O
for	O
Firefox	B-Language
2	I-Language
on	O
December	O
18	O
,	O
2008	B-Device
.	O
</s>
<s>
Inline	O
spell	B-Application
checking	I-Application
for	O
text	O
boxes	O
.	O
</s>
<s>
Session	O
restoration	O
after	O
a	O
browser	B-Application
crash	O
.	O
</s>
<s>
Search	O
suggestion	O
for	O
Google	B-Application
and	O
Yahoo	B-Application
!	I-Application
.	O
</s>
<s>
New	O
search	B-Protocol
plugin	I-Protocol
manager	O
and	O
add-on	B-Operating_System
manager	O
.	O
</s>
<s>
Web	B-General_Concept
feed	I-General_Concept
previewing	O
.	O
</s>
<s>
Support	O
for	O
Sherlock	B-Operating_System
and	O
OpenSearch	B-Application
.	O
</s>
<s>
Support	O
for	O
SVG	B-Application
text	O
using	O
svg:textPath	O
.	O
</s>
<s>
Search	O
suggestions	O
appear	O
with	O
search	O
history	O
in	O
the	O
search	O
box	O
for	O
Google	B-Application
and	O
Yahoo	B-Application
!	I-Application
.	O
</s>
<s>
Support	O
for	O
client-side	O
session	O
and	O
persistent	B-Application
storage	I-Application
.	O
</s>
<s>
A	O
new	O
NSIS-based	O
installer	O
.	O
</s>
<s>
JavaScript	B-Language
1.7	I-Language
.	O
</s>
<s>
As	O
one	O
article	O
noted	O
after	O
the	O
release	O
of	O
Firefox	B-Language
2.0	I-Language
in	O
October	O
2006	O
,	O
"	O
IE6	B-Application
had	O
the	O
lion	O
's	O
share	O
of	O
the	O
browser	B-Application
market	O
with	O
77.22	O
%	O
.	O
</s>
<s>
Internet	B-Application
Explorer	I-Application
7	I-Application
had	O
climbed	O
to	O
3.18	O
%	O
,	O
while	O
Firefox	B-Language
2.0	I-Language
was	O
at	O
0.69	O
%	O
.	O
"	O
</s>
<s>
A	O
Softpedia	O
article	O
,	O
however	O
,	O
noted	O
in	O
July	O
2007	O
that	O
"	O
Firefox	B-Language
2.0	I-Language
has	O
been	O
also	O
expanding	O
its	O
share	O
constantly	O
in	O
spite	O
of	O
IE7	B-Application
.	O
</s>
<s>
From	O
just	O
0.69	O
%	O
in	O
October	O
2006	O
,	O
Firefox	B-Language
2.0	I-Language
is	O
now	O
accounting	O
for	O
11.07	O
%	O
of	O
the	O
market	O
.	O
</s>
<s>
Mozilla	O
has	O
even	O
sacrificed	O
version	O
1.5	O
of	O
its	O
open	O
source	O
browser	B-Application
for	O
Firefox	B-Language
2.0	I-Language
.	O
</s>
<s>
With	O
support	O
cut	O
at	O
the	O
end	O
of	O
June	O
,	O
Firefox	B-Application
1.5	O
dropped	O
to	O
just	O
2.85	O
%	O
.	O
"	O
</s>
<s>
Firefox	B-Language
2	I-Language
began	O
to	O
lose	O
notable	O
market	O
share	O
to	O
Firefox	B-Language
3	I-Language
.	O
</s>
<s>
Within	O
24	O
hours	O
after	O
its	O
release	O
,	O
Firefox	B-Language
3	I-Language
usage	O
rose	O
from	O
under	O
1%	O
to	O
over	O
3%	O
according	O
to	O
Net	O
Applications	O
in	O
that	O
time	O
period	O
.	O
</s>
<s>
Firefox	B-Language
2	I-Language
market	O
share	O
consistently	O
dropped	O
,	O
eventually	O
being	O
surpassed	O
by	O
Firefox	B-Language
3	I-Language
in	O
2008	B-Device
and	O
Firefox	B-Language
3.5	I-Language
in	O
2009	O
in	O
the	O
general	O
browser	B-Application
market	O
as	O
the	O
Firefox	B-Application
version	O
with	O
the	O
greatest	O
share	O
,	O
and	O
by	O
early	O
2009	O
had	O
dropped	O
under	O
3	O
percent	O
.	O
</s>
<s>
Firefox	B-Language
2.x	I-Language
was	O
end-of-lifed	O
in	O
December	O
,	O
2008	B-Device
.	O
</s>
<s>
With	O
roughly	O
26	O
months	O
of	O
support	O
,	O
only	O
Firefox	B-Protocol
3.6	I-Protocol
was	O
supported	O
longer	O
.	O
</s>
<s>
The	O
Gecko	O
1.8.1	O
browser	B-Application
core	O
continued	O
to	O
receive	O
patches	O
for	O
projects	O
such	O
as	O
Camino	B-Language
,	O
K-Meleon	B-Protocol
,	O
and	O
SeaMonkey	B-Language
,	O
even	O
after	O
official	O
Firefox	B-Application
releases	O
had	O
ceased	O
.	O
</s>
<s>
The	O
latter	O
can	O
be	O
resource-intensive	O
with	O
the	O
older	O
core	O
,	O
and	O
users	O
stuck	O
with	O
it	O
should	O
use	O
NoScript	B-Operating_System
to	O
avoid	O
problems	O
with	O
scripts	B-Language
that	O
take	O
too	O
long	O
to	O
process	O
(	O
at	O
the	O
cost	O
of	O
losing	O
some	O
or	O
all	O
site	O
features	O
beyond	O
basic	O
functionality	O
)	O
.	O
</s>
<s>
Services	O
with	O
large	O
user	O
bases	O
have	O
relegated	O
browsers	B-Application
with	O
the	O
Gecko	O
1.8.1	O
rendering	O
engine	O
to	O
using	O
lightweight	O
or	O
mobile	B-Application
versions	I-Application
of	O
their	O
sites	O
,	O
alongside	O
recommendations	O
to	O
upgrade	O
the	O
browser	B-Application
;	O
while	O
others	O
only	O
recommend	O
to	O
upgrade	O
.	O
</s>
<s>
Nevertheless	O
,	O
there	O
is	O
still	O
a	O
very	O
large	O
number	O
of	O
websites	O
that	O
are	O
freely	O
usable	O
and	O
navigable	O
with	O
Firefox	B-Language
2.0	I-Language
or	O
equivalents	O
,	O
alone	O
because	O
many	O
of	O
them	O
must	O
still	O
support	O
other	O
older	O
browsers	B-Application
,	O
like	O
Internet	B-Application
Explorer	I-Application
6	I-Application
or	O
IE7	B-Application
.	O
</s>
