<s>
libxslt	B-Language
is	O
the	O
XSLT	B-Application
C	B-Language
library	O
developed	O
for	O
the	O
GNOME	B-Application
project	O
.	O
</s>
<s>
It	O
provides	O
an	O
implementation	O
of	O
XSLT	B-Application
1.0	O
,	O
plus	O
most	O
of	O
the	O
EXSLT	B-Language
set	O
of	O
processor-portable	O
extensions	O
functions	O
and	O
some	O
of	O
Saxon	B-Language
's	O
evaluate	O
and	O
expressions	O
extensions	O
.	O
</s>
<s>
libxslt	B-Language
is	O
based	O
on	O
libxml2	B-Application
,	O
which	O
it	O
uses	O
for	O
XML	B-Protocol
parsing	O
,	O
tree	O
manipulation	O
and	O
XPath	B-Language
support	O
.	O
</s>
<s>
It	O
is	O
free	B-Application
software	I-Application
released	O
under	O
the	B-License
MIT	I-License
License	I-License
and	O
can	O
be	O
reused	O
in	O
commercial	O
applications	O
.	O
</s>
<s>
libxslt	B-Language
can	O
be	O
used	O
either	O
as	O
library	O
embedded	O
into	O
an	O
application	O
,	O
or	O
via	O
the	O
command	O
line	O
tool	O
.	O
</s>
<s>
Being	O
written	O
in	O
C	B-Language
,	O
libxslt	B-Language
is	O
a	O
fast	O
and	O
low-resource	O
processor	O
.	O
</s>
<s>
This	O
makes	O
it	O
a	O
popular	O
choice	O
for	O
DocBook	B-Protocol
formatting	O
and	O
as	O
standard	O
XSLT	B-Application
processor	I-Application
for	O
programming	O
languages	O
like	O
PHP	B-Application
,	O
Perl	B-Language
or	O
Python	B-Language
.	O
</s>
<s>
The	O
WebKit	B-Language
layout	O
engine	O
(	O
used	O
e.g.	O
</s>
<s>
in	O
Apple	B-Application
Safari	I-Application
and	O
Google	B-Application
Chrome	I-Application
web	O
browser	O
)	O
uses	O
the	O
libxslt	B-Language
library	O
to	O
do	O
XSL	B-Application
transformations	I-Application
.	O
</s>
