<s>
Swiftweasel	B-Protocol
was	O
a	O
fork	B-Application
of	O
Mozilla	B-Application
Firefox	I-Application
available	O
for	O
the	O
Linux	B-Application
platform	O
only	O
.	O
</s>
<s>
Swiftweasel	B-Protocol
is	O
optimized	O
using	O
the	O
following	O
methods	O
:	O
</s>
<s>
As	O
of	O
the	O
3.0.3	O
release	O
,	O
Swiftweasel	B-Protocol
has	O
shifted	O
its	O
primary	O
optimization	O
from	O
processor	O
specific	O
to	O
profile-guided	O
optimization	O
(	O
PGO	O
)	O
.	O
</s>
<s>
There	O
are	O
also	O
separate	O
installers	O
for	O
Ubuntu	O
and	O
Arch	O
linux	B-Application
available	O
through	O
their	O
communities	O
.	O
</s>
<s>
Swiftweasel	B-Protocol
is	O
compiled	O
with	O
options	O
that	O
optimize	O
for	O
speed	O
rather	O
than	O
binary	O
size	O
.	O
</s>
<s>
Compiled	O
with	O
the	O
-O3	O
compile	O
flag	O
(	O
the	O
highest	O
level	O
)	O
,	O
with	O
the	O
resulting	O
Swiftweasel	B-Protocol
binary	O
being	O
larger	O
than	O
that	O
of	O
Firefox	B-Application
.	O
</s>
<s>
Firefox	B-Application
is	O
compiled	O
with	O
the	O
-Os	O
compile	O
flag	O
,	O
which	O
is	O
for	O
binary	O
size	O
.	O
</s>
<s>
Binaries	O
incorporate	O
additional	O
instruction	B-General_Concept
sets	I-General_Concept
:	O
</s>
<s>
Intel	O
and	O
AMD	O
:	O
SSE	B-General_Concept
,	O
SSE2	B-General_Concept
,	O
SSE3	B-General_Concept
,	O
and	O
MMX	B-Architecture
.	O
</s>
<s>
AMD	O
only	O
:	O
3DNow	B-General_Concept
!	I-General_Concept
</s>
<s>
Intel	O
32bit	O
:	O
Pentium	B-General_Concept
4	I-General_Concept
(	O
Prescott	O
)	O
,	O
Pentium	B-General_Concept
4	I-General_Concept
,	O
Pentium	B-Architecture
M	I-Architecture
,	O
Pentium	B-General_Concept
III	I-General_Concept
,	O
Pentium	B-General_Concept
II	I-General_Concept
;	O
</s>
<s>
Intel	O
64bit	O
:	O
Nocona	B-Device
;	O
</s>
<s>
AMD	O
:	O
Athlon	B-Architecture
XP	O
,	O
Athlon	B-Architecture
,	O
K6-2	O
,	O
Athlon	B-Architecture
;	O
</s>
<s>
AMD64	B-Device
:	O
Athlon64	O
,	O
Opteron	B-General_Concept
.	O
</s>
<s>
Compiled	O
with	O
newer	O
versions	O
of	O
GCC	B-Application
(	O
Firefox	B-Application
2.0	O
uses	O
3.3.2	O
,	O
Swiftweasel	B-Protocol
2.0	O
uses	O
4.0.3	O
,	O
and	O
Swiftweasel	B-Protocol
3.0.3	O
uses	O
4.2.3	O
)	O
.	O
</s>
<s>
Better	O
protection	O
from	O
Buffer	B-General_Concept
overflow	I-General_Concept
attacks	O
(	O
Swiftweasel	B-Protocol
2.0	O
uses	O
-D_FORTIFY_SOURCE	O
=	O
2	O
;	O
Firefox	B-Application
2.0	O
uses	O
gcc	B-Application
3.x	O
,	O
which	O
does	O
not	O
support	O
this	O
)	O
.	O
</s>
<s>
IPv6	B-Protocol
DNS	B-Protocol
lookups	O
are	O
disabled	O
,	O
preventing	O
slowdowns	O
;	O
</s>
<s>
HTTP	B-Protocol
pipelining	I-Protocol
is	O
enabled	O
by	O
default	O
.	O
</s>
<s>
Note	O
that	O
Fasterfox	O
provides	O
a	O
GUI	B-Application
to	O
adjust	O
these	O
settings	O
.	O
</s>
<s>
Swiftweasel	B-Protocol
has	O
several	O
extensions	B-Operating_System
installed	O
by	O
default	O
.	O
</s>
<s>
Changes	O
made	O
to	O
Swiftweasel	B-Protocol
include	O
:	O
</s>
<s>
Swiftweasel	B-Protocol
uses	O
its	O
own	O
settings	O
directory	O
.	O
</s>
<s>
The	O
settings	O
,	O
including	O
bookmarks	O
,	O
history	O
,	O
and	O
extensions	B-Operating_System
are	O
imported	O
from	O
Mozilla	B-Application
Firefox	I-Application
the	O
first	O
time	O
Swiftweasel	B-Protocol
runs	O
.	O
</s>
<s>
Plugins	O
stored	O
in	O
/lib/mozilla/plugins	O
and	O
/lib/Firefox/plugins	O
are	O
detected	O
and	O
used	O
by	O
Swiftweasel	B-Protocol
.	O
</s>
<s>
The	O
Swiftweasel	B-Protocol
project	O
also	O
builds	O
optimized	O
32	O
and	O
64bit	O
builds	O
of	O
the	O
Thunderbird	B-Application
email	B-Protocol
client	I-Protocol
known	O
as	O
Swiftdove	O
.	O
</s>
<s>
The	O
2.0.0.21	O
builds	O
of	O
Swiftdove	O
include	O
the	O
0.9	O
Lightning	B-Language
calendar	O
plugin	O
installed	O
by	O
default	O
.	O
</s>
