<s>
gtk-gnutella	B-Language
is	O
a	O
peer-to-peer	O
file	O
sharing	O
application	O
which	O
runs	O
on	O
the	O
gnutella	B-Protocol
network	O
.	O
</s>
<s>
gtk-gnutella	B-Language
uses	O
the	O
GTK+	B-Application
toolkit	O
for	O
its	O
graphical	B-Application
user	I-Application
interface	I-Application
.	O
</s>
<s>
Released	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
gtk-gnutella	B-Language
is	O
free	B-Application
software	I-Application
.	O
</s>
<s>
Initially	O
gtk-gnutella	B-Language
was	O
written	O
to	O
look	O
like	O
the	O
original	O
Nullsoft	O
Gnutella	B-Protocol
client	O
.	O
</s>
<s>
gtk-gnutella	B-Language
is	O
programmed	O
in	O
C	B-Language
with	O
an	O
emphasis	O
on	O
efficiency	O
and	O
portability	O
without	O
being	O
minimalistic	O
but	O
rather	O
head-on	O
with	O
most	O
of	O
the	O
modern	O
features	O
of	O
the	O
gnutella	B-Protocol
network	O
.	O
</s>
<s>
Therefore	O
,	O
it	O
requires	O
fewer	O
resources	O
(	O
such	O
as	O
CPU	B-General_Concept
and/or	O
RAM	B-Architecture
)	O
than	O
the	O
major	O
gnutella	B-Protocol
clients	O
.	O
</s>
<s>
It	O
can	O
also	O
be	O
used	O
as	O
headless	B-Application
gnutella	B-Protocol
client	O
not	O
requiring	O
GTK+	B-Application
at	O
all	O
.	O
</s>
<s>
gtk-gnutella	B-Language
has	O
a	O
filtering	O
engine	O
that	O
can	O
reduce	O
the	O
amount	O
of	O
spam	O
and	O
other	O
irrelevant	O
results	O
.	O
</s>
<s>
gtk-gnutella	B-Language
supports	O
a	O
large	O
range	O
of	O
the	O
features	O
of	O
modern	O
gnutella	B-Protocol
clients	O
.	O
</s>
<s>
gtk-gnutella	B-Language
was	O
the	O
first	O
gnutella	B-Protocol
client	O
to	O
support	O
IPv6	B-Protocol
and	O
encryption	O
using	O
TLS	B-Protocol
.	O
</s>
<s>
It	O
can	O
handle	O
and	O
export	O
magnet	B-Protocol
links	I-Protocol
.	O
</s>
<s>
gtk-gnutella	B-Language
also	O
has	O
support	O
to	O
prevent	O
spamming	O
and	O
other	O
hostile	O
peer	O
activity	O
.	O
</s>
<s>
The	O
gnutella	B-Protocol
network	O
benefits	O
from	O
running	O
the	O
latest	O
version	O
obtainable	O
as	O
peer	O
and	O
hostile	O
IP	O
address	O
lists	O
change	O
rapidly	O
,	O
making	O
building	O
the	O
latest	O
SVN	O
snapshot	O
the	O
best	O
option	O
.	O
</s>
<s>
The	O
gtk-gnutella	B-Language
sources	O
use	O
dist	O
as	O
build	O
and	O
configuration	O
system	O
instead	O
of	O
Autoconf	B-Application
.	O
</s>
<s>
Another	O
hazard	O
for	O
novices	O
is	O
configuring	O
NAT	B-Protocol
devices	I-Protocol
to	O
enable	O
full	O
network	O
connectivity	O
for	O
gtk-gnutella	B-Language
.	O
</s>
<s>
gtk-gnutella	B-Language
,	O
like	O
any	O
gnutella	B-Protocol
client	O
,	O
is	O
still	O
usable	O
behind	O
a	O
firewall	B-Application
or	O
a	O
router	B-Protocol
,	O
but	O
with	O
some	O
reduced	O
functionality	O
,	O
if	O
it	O
cannot	O
receive	O
incoming	O
TCP	B-Protocol
connections	O
or	O
UDP	B-Protocol
packets	I-Protocol
.	O
</s>
<s>
In	O
an	O
attempt	O
to	O
mitigate	O
the	O
issue	O
for	O
newcomers	O
,	O
gtk-gnutalla	O
implements	O
the	O
UPnP	B-Application
and	O
NAT-PMP	B-Protocol
client	O
protocols	O
.	O
</s>
<s>
gtk-gnutella	B-Language
supports	O
features	O
for	O
downloading	O
larger	O
files	O
(	O
videos	O
,	O
programs	O
,	O
and	O
disk	O
images	O
)	O
.	O
</s>
<s>
Tiger	O
tree	O
hashing	O
and	O
other	O
gtk-gnutella	B-Language
features	O
make	O
file	O
transfers	O
as	O
efficient	O
as	O
BitTorrent	B-Protocol
.	O
</s>
<s>
Specifically	O
,	O
gtk-gnutella	B-Language
supports	O
partial	O
file	O
sharing	O
,	O
remote	O
queueing	O
and	O
files	O
larger	O
than	O
4	O
GiB	O
.	O
</s>
<s>
Version	O
0.96.6	O
introduced	O
preliminary	O
support	O
for	O
a	O
Kademlia	B-Operating_System
DHT	O
,	O
which	O
was	O
completed	O
in	O
version	O
0.96.7	O
.	O
</s>
<s>
The	O
DHT	O
is	O
replacing	O
search	O
by	O
SHA-1	B-Algorithm
,	O
when	O
locating	O
alternate	O
sources	O
for	O
a	O
known	O
file	O
or	O
looking	O
for	O
push-proxies	O
.	O
</s>
<s>
Version	O
0.96.9	O
introduced	O
full	O
native	O
support	O
for	O
UPnP	B-Application
and	O
NAT-PMP	B-Protocol
,	O
making	O
the	O
usage	O
behind	O
a	O
compatible	O
router	B-Protocol
much	O
easier	O
since	O
there	O
is	O
no	O
longer	O
any	O
need	O
to	O
manually	O
forward	O
ports	O
on	O
the	O
firewall	B-Application
.	O
</s>
<s>
In	O
this	O
version	O
the	O
code	O
was	O
also	O
ported	O
to	O
Microsoft	B-Application
Windows	I-Application
however	O
the	O
Windows	O
port	O
is	O
still	O
considered	O
beta	O
due	O
to	O
lack	O
of	O
wide	O
testing	O
so	O
far	O
.	O
</s>
<s>
Version	O
0.97	O
was	O
a	O
major	O
release	O
,	O
introducing	O
client-side	O
support	O
for	O
HTTP	B-Protocol
pipelining	I-Protocol
,	O
"	O
What	O
's	O
New	O
?	O
"	O
</s>
<s>
queries	O
,	O
MIME	B-Application
type	I-Application
query	O
filtering	O
,	O
GUESS	O
support	O
(	O
Gnutella	B-Protocol
UDP	B-Protocol
Extension	O
for	O
Scalable	O
Searches	O
)	O
and	O
partial	O
file	O
querying	O
.	O
</s>
<s>
Although	O
many	O
Gnutella	B-Protocol
vendors	O
already	O
supported	O
server-side	O
GUESS	O
,	O
gtk-gnutella	B-Language
introduced	O
the	O
client-side	O
as	O
well	O
,	O
also	O
enhancing	O
the	O
original	O
specifications	O
of	O
the	O
protocol	O
to	O
make	O
it	O
truly	O
usable	O
.	O
</s>
<s>
Version	O
0.98.2	O
employs	O
a	O
minor	O
patch	O
to	O
correct	O
malloc	B-Language
memory	O
allocations	O
and	O
multiple	O
threads	O
issues	O
,	O
mainly	O
on	O
Ubuntu	B-Operating_System
11.10	O
operating	O
systems	O
.	O
</s>
<s>
This	O
2011	O
gtk-gnutella	B-Language
version	O
was	O
also	O
dedicated	O
to	O
the	O
memory	O
of	O
Dennis	O
Ritchie	O
,	O
1941-2011	O
.	O
</s>
<s>
Version	O
0.98.4	O
added	O
RUDP	O
(	O
reliable	O
UDP	B-Protocol
)	O
and	O
improved	O
partial	O
file	O
transfers	O
.	O
</s>
<s>
Version	O
1.1	O
is	O
a	O
major	O
release	O
which	O
added	O
G2	O
support	O
:	O
gtk-gnutella	B-Language
will	O
now	O
connect	O
to	O
the	O
G2	O
network	O
in	O
leaf	O
mode	O
.	O
</s>
<s>
gtk-gnutella	B-Language
does	O
not	O
rank	O
as	O
one	O
of	O
the	O
most	O
popular	O
clients	O
on	O
GnutellaNet	O
crawls	O
.	O
</s>
<s>
gtk-gnutella	B-Language
developers	O
 '	O
proposals	O
have	O
been	O
incorporated	O
into	O
many	O
gnutella	B-Protocol
clients	O
.	O
</s>
<s>
In	O
2011	O
,	O
gtk-gnutella	B-Language
vendor	O
extensions	O
are	O
the	O
third	O
most	O
prolific	O
on	O
the	O
GDF	O
(	O
Gnutella	B-Protocol
Developer	O
Forum	O
)	O
,	O
following	O
Limewire	O
and	O
Bearshare	O
.	O
</s>
<s>
Salon	O
listed	O
gtk-gnutella	B-Language
as	O
one	O
of	O
the	O
five	O
most	O
popular	O
gnutella	B-Protocol
applications	O
in	O
2002	O
.	O
</s>
<s>
XoloX	O
and	O
Toadnode	B-Protocol
,	O
also	O
in	O
the	O
list	O
,	O
are	O
no	O
longer	O
actively	O
developed	O
.	O
</s>
