<s>
Lucifox	B-Operating_System
is	O
a	O
discontinued	O
free	B-License
and	I-License
open	I-License
source	I-License
add-on	O
for	O
the	O
browser	O
Mozilla	B-Application
Firefox	I-Application
that	O
manages	O
,	O
downloads	O
and	O
displays	O
e-books	O
.	O
</s>
<s>
It	O
is	O
part	O
of	O
the	O
Lucidor	O
suite	O
of	O
free	B-License
and	I-License
open	I-License
source	I-License
e-book	O
software	O
made	O
by	O
the	O
Swedish	O
developer	O
Ordbrand	O
.	O
</s>
<s>
The	O
Lucifox	B-Operating_System
e-book	O
reader	O
began	O
as	O
a	O
continuation	O
of	O
the	O
previous	O
XUL-based	O
,	O
cross-platform	O
and	O
standalone	O
e-book	O
reader	O
Lucidor	O
,	O
and	O
version	O
0.8.1	O
was	O
released	O
on	O
February	O
7	O
,	O
2011	O
.	O
</s>
<s>
Lucifox	B-Operating_System
has	O
been	O
translated	O
into	O
several	O
languages	O
,	O
and	O
development	O
picked	O
up	O
in	O
the	O
second	O
half	O
of	O
2012	O
,	O
resulting	O
in	O
a	O
not	O
backward-compatible	O
new	O
branch	O
as	O
of	O
version	O
0.9.5	O
due	O
to	O
changes	O
in	O
Firefox	B-Application
itself	O
and	O
a	O
new	O
license	O
change	O
as	O
of	O
version	O
0.9.7	O
to	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
,	O
version	O
3	O
.	O
</s>
<s>
Lucifox	B-Operating_System
opens	O
in	O
the	O
main	O
window	O
of	O
the	O
browser	O
and	O
displays	O
some	O
online	O
book	O
catalogues	O
,	O
from	O
which	O
the	O
reader	O
can	O
search	O
for	O
and	O
download	O
books	O
.	O
</s>
<s>
Lucifox	B-Operating_System
remembers	O
the	O
reading	O
position	O
,	O
so	O
reading	O
can	O
be	O
resumed	O
later	O
where	O
the	O
reader	O
stopped	O
.	O
</s>
<s>
Lucifox	B-Operating_System
can	O
also	O
search	O
books	O
for	O
terms	O
in	O
full	O
text	O
,	O
with	O
hits	O
displayed	O
as	O
clickable	O
hyperlinks	O
in	O
the	O
left	O
panel	O
.	O
</s>
<s>
Lucifox	B-Operating_System
benefits	O
from	O
Firefox	B-Application
's	O
support	O
for	O
a	O
large	O
number	O
of	O
open	O
web	O
standards	O
,	O
which	O
makes	O
it	O
possible	O
to	O
display	O
,	O
in	O
addition	O
to	O
regular	O
text	O
,	O
books	O
with	O
advanced	O
content	O
often	O
found	O
in	O
textbooks	O
,	O
like	O
mathematical	O
,	O
musical	O
or	O
chemical	O
notation	O
,	O
and	O
even	O
interactive	O
3D	O
content	O
,	O
e.g.	O
</s>
<s>
As	O
an	O
add-on	O
for	O
Firefox	B-Application
,	O
Lucifox	B-Operating_System
is	O
available	O
on	O
all	O
regular	O
computers	O
where	O
Firefox	B-Application
is	O
available	O
,	O
including	O
the	O
Linux	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
and	O
macOS	B-Application
operating	O
systems	O
.	O
</s>
<s>
Once	O
installed	O
,	O
it	O
is	O
available	O
from	O
the	O
browser	O
's	O
extension	B-Protocol
bar	O
,	O
indicated	O
by	O
a	O
red	O
star	O
,	O
which	O
can	O
be	O
moved	O
by	O
the	O
user	O
,	O
or	O
from	O
the	O
Tool	O
menu	O
.	O
</s>
<s>
However	O
,	O
since	O
Lucifox	B-Operating_System
was	O
built	O
using	O
XUL	B-Application
,	O
it	O
is	O
not	O
compatible	O
with	O
Firefox	B-Application
for	I-Application
Android	I-Application
and	O
there	O
is	O
currently	O
no	O
adapted	O
version	O
available	O
.	O
</s>
<s>
Lucifox	B-Operating_System
implements	O
the	O
open	O
e-book	O
standards	O
EPUB	O
3	O
and	O
EPUB	O
2	O
as	O
published	O
by	O
the	O
IDPF	O
,	O
and	O
the	O
open	O
standard	O
OPDS	O
for	O
searching	O
,	O
finding	O
and	O
retrieving	O
e-books	O
from	O
online	O
book	O
catalogues	O
.	O
</s>
<s>
Support	O
for	O
EPUB	O
3	O
means	O
that	O
Lucifox	B-Operating_System
is	O
able	O
to	O
display	O
Scalable	B-Application
Vector	I-Application
Graphics	I-Application
(	O
SVG	B-Application
)	O
,	O
as	O
well	O
as	O
PNG	O
and	O
JPEG	O
bitmap	O
images	O
.	O
</s>
<s>
Lucifox	B-Operating_System
is	O
part	O
of	O
the	O
Lucidor	O
suite	O
of	O
e-book	O
software	O
by	O
the	O
Swedish	O
developer	O
Ordbrand	O
,	O
which	O
includes	O
the	O
original	O
Lucidor	O
e-book	O
reader	O
,	O
the	O
MediaWiki	O
extension	B-Protocol
Luciwik	O
to	O
add	O
EPUB	O
3	O
export	O
of	O
articles	O
and	O
OPDS	O
catalogue	O
to	O
Mediawiki	O
installations	O
,	O
and	O
the	O
Moodle	B-Application
Book	O
module	O
add-on	O
Lucimoo	O
for	O
importing	O
and	O
exporting	O
EPUB	O
3	O
from	O
Moodle	B-Application
.	O
</s>
<s>
In	O
articles	O
,	O
Lucifox	B-Operating_System
is	O
often	O
compared	O
to	O
EPUBReader	O
,	O
a	O
similar	O
add-on	O
that	O
is	O
not	O
free	B-License
and	I-License
open	I-License
source	I-License
,	O
but	O
also	O
available	O
at	O
no	O
charge	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
18.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.15	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
18.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.14	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
18.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.14	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
and	O
later	O
.	O
</s>
<s>
288.8	O
KB	O
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
and	O
later	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
-	O
2.0.*	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
-	O
2.0.*	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
-	O
2.0	O
.	O
</s>
<s>
Works	O
with	O
Firefox	B-Application
3.0	O
and	O
later	O
,	O
SeaMonkey	B-Language
2.0	O
-	O
2.0	O
.	O
</s>
