<s>
qBittorrent	B-Application
is	O
a	O
cross-platform	B-Operating_System
free	B-License
and	I-License
open-source	I-License
BitTorrent	B-Protocol
client	B-Protocol
written	O
in	O
native	O
C++	B-Language
.	O
</s>
<s>
It	O
relies	O
on	O
Boost	B-Language
,	O
Qt	B-Language
6	O
toolkit	O
and	O
the	O
libtorrent-rasterbar	O
library	O
(	O
for	O
the	O
torrent	B-Protocol
back-end	O
)	O
,	O
with	O
an	O
optional	O
search	O
engine	O
written	O
in	O
Python	B-Language
.	O
</s>
<s>
qBittorrent	B-Application
was	O
originally	O
developed	O
in	O
March	O
2006	O
by	O
Christophe	O
Dumez	O
,	O
from	O
the	O
University	O
of	O
Technology	O
of	O
Belfort-Montbéliard	O
(	O
UTBM	O
)	O
.	O
</s>
<s>
In	O
February	O
2023	O
,	O
a	O
security	O
vulnerability	O
affecting	O
versions	O
4.5.0	O
and	O
4.5.1	O
was	O
discovered	O
in	O
the	O
Web	O
UI	O
running	O
on	O
Windows	B-Application
systems	O
.	O
</s>
<s>
Some	O
of	O
the	O
features	O
present	O
in	O
qBittorrent	B-Application
include	O
:	O
</s>
<s>
qBittorrent	B-Application
is	O
cross-platform	B-Operating_System
,	O
available	O
on	O
many	O
operating	B-General_Concept
systems	I-General_Concept
,	O
including	O
:	O
FreeBSD	B-Operating_System
,	O
Linux	B-Application
,	O
macOS	B-Application
,	O
OS/2	B-Application
(	O
including	O
ArcaOS	B-Device
and	O
eComStation	B-Device
)	O
,	O
Windows	B-Application
.	O
</s>
<s>
,	O
SourceForge	B-Application
statistics	O
indicate	O
that	O
the	O
most	O
popular	O
qBittorrent	B-Application
version	O
of	O
all	O
supported	O
platforms	O
,	O
81%	O
of	O
downloads	O
were	O
for	O
Windows	B-Application
computers	I-Application
.	O
</s>
<s>
,	O
FossHub	O
statistics	O
indicate	O
qBittorrent	B-Application
as	O
the	O
second	O
most	O
downloaded	O
software	O
with	O
over	O
75	O
million	O
downloads	O
.	O
</s>
<s>
Packages	O
for	O
different	O
Linux	B-Application
distributions	I-Application
are	O
available	O
,	O
though	O
most	O
are	O
provided	O
through	O
official	O
channels	O
via	O
various	O
distributions	O
.	O
</s>
<s>
qBittorrent	B-Application
Enhanced	O
is	O
a	O
fork	O
of	O
qBittorrent	B-Application
intended	O
for	O
blocking	O
leeching	O
clients	O
such	O
as	O
Xunlei	B-Protocol
.	O
</s>
<s>
It	O
is	O
hosted	O
on	O
GitHub	B-Application
.	O
</s>
<s>
In	O
2012	O
,	O
Ghacks	O
suggested	O
qBittorrent	B-Application
as	O
a	O
great	O
alternative	O
to	O
μTorrent	B-Application
,	O
for	O
those	O
put	O
off	O
by	O
its	O
controversial	O
adware	O
and	O
bundleware	B-Application
changes	O
.	O
</s>
