<s>
Lector	B-Language
is	O
a	O
free	O
e-book	O
reading	O
application	O
for	O
desktop	O
Linux	B-Application
systems	O
that	O
also	O
has	O
basic	O
collection	O
management	O
features	O
.	O
</s>
<s>
Lector	B-Language
was	O
developed	O
by	O
a	O
Spanish	O
programmer	O
known	O
as	O
BasioMeusPuga	O
He	O
started	O
publishing	O
code	O
on	O
GitHub	B-Application
in	O
November	O
2017	O
.	O
and	O
released	O
on	O
March	O
10	O
,	O
2018	O
.	O
</s>
<s>
Initially	O
there	O
was	O
no	O
support	O
for	O
annotations	O
or	O
text	O
highlighting	O
,	O
neither	O
for	O
PDF	B-Application
files	I-Application
.	O
</s>
<s>
Preliminary	O
PDF	B-Application
support	O
via	O
Poppler	B-Language
was	O
released	O
in	O
spring	O
2018	O
in	O
version	O
0.2	O
.	O
</s>
<s>
It	O
deals	O
with	O
both	O
popular	O
e-book	O
formats	O
and	O
comic	O
books	O
:	O
EPUB	O
,	O
Mobipocket	O
,	O
AZW( 	O
3/4	O
)	O
,	O
comic	O
book	O
archive	O
(	O
CBR/CBZ	O
)	O
,	O
Portable	B-Application
Document	I-Application
Format	I-Application
(	O
PDF	B-Application
)	O
,	O
DjVu	O
,	O
FictionBook	O
(	O
FB2	O
)	O
It	O
does	O
not	O
support	O
files	O
with	O
digital	O
rights	O
management	O
.	O
</s>
<s>
Lector	B-Language
opens	O
to	O
an	O
overview	O
of	O
the	O
book	O
collection	O
(	O
"	O
library	O
"	O
)	O
,	O
which	O
can	O
be	O
sorted	O
by	O
the	O
content	O
of	O
different	O
metadata	O
fields	O
or	O
last	O
reading	O
time	O
and	O
can	O
search/filter	O
titles	O
.	O
</s>
<s>
Lector	B-Language
is	O
released	O
as	O
Free	B-Application
Software	I-Application
,	O
and	O
thus	O
with	O
its	O
complete	O
source	O
code	O
,	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
in	O
version	O
3	O
or	O
later	O
on	O
GitHub	B-Application
.	O
</s>
<s>
It	O
has	O
been	O
included	O
in	O
the	O
default	O
package	B-Application
repositories	I-Application
of	O
Arch	O
(	O
AUR	O
)	O
,	O
openSUSE	B-Operating_System
and	O
Gentoo	B-Application
.	O
</s>
<s>
The	O
application	O
is	O
written	O
in	O
Python	B-Language
,	O
using	O
Qt	B-Language
5	O
widgets	O
via	O
PyQt	B-Language
for	O
the	O
user	O
interface	O
.	O
</s>
<s>
Metadata	O
and	O
cover	O
images	O
are	O
stored	O
in	O
a	O
SQLite	B-Language
database	O
.	O
</s>
