<s>
Bitflu	B-Protocol
is	O
an	O
open-source	B-Application
,	O
BitTorrent	B-Protocol
client	O
by	O
Adrian	O
Ulrich	O
.	O
</s>
<s>
It	O
is	O
available	O
for	O
Unix-like	B-Operating_System
systems	I-Operating_System
and	O
is	O
written	O
in	O
Perl	B-Language
.	O
</s>
<s>
Bitflu	B-Protocol
has	O
received	O
good	O
reviews	O
,	O
both	O
in	O
open-source	B-Application
software	I-Application
sites	O
and	O
blogs	O
,	O
praising	O
it	O
for	O
being	O
lightweight	O
and	O
feature-complete	O
.	O
</s>
<s>
Even	O
so	O
,	O
Bitflu	B-Protocol
seems	O
to	O
be	O
largely	O
unknown	O
,	O
reportedly	O
commanding	O
only	O
0.000025	O
%	O
of	O
the	O
total	O
BitTorrent	B-Protocol
traffic	O
.	O
</s>
