<s>
GNU	B-Protocol
Wget	I-Protocol
(	O
or	O
just	O
Wget	B-Protocol
,	O
formerly	O
Geturl	B-Protocol
,	O
also	O
written	O
as	O
its	O
package	O
name	O
,	O
wget	B-Protocol
)	O
is	O
a	O
computer	B-Application
program	I-Application
that	O
retrieves	O
content	O
from	O
web	B-Application
servers	I-Application
.	O
</s>
<s>
It	O
is	O
part	O
of	O
the	B-Operating_System
GNU	I-Operating_System
Project	I-Operating_System
.	O
</s>
<s>
It	O
supports	O
downloading	B-Application
via	O
HTTP	B-Protocol
,	O
HTTPS	B-Protocol
,	O
and	O
FTP	B-Protocol
.	O
</s>
<s>
Its	O
features	O
include	O
recursive	O
download	B-Application
,	O
conversion	O
of	O
links	O
for	O
offline	O
viewing	O
of	O
local	O
HTML	B-Language
,	O
and	O
support	O
for	O
proxies	B-Application
.	O
</s>
<s>
It	O
appeared	O
in	O
1996	O
,	O
coinciding	O
with	O
the	O
boom	O
of	O
popularity	O
of	O
the	O
Web	O
,	O
causing	O
its	O
wide	O
use	O
among	O
Unix	B-Application
users	O
and	O
distribution	O
with	O
most	O
major	O
Linux	B-Application
distributions	I-Application
.	O
</s>
<s>
Written	O
in	O
portable	O
C	B-Language
,	O
Wget	B-Protocol
can	O
be	O
easily	O
installed	O
on	O
any	O
Unix-like	O
system	O
.	O
</s>
<s>
Wget	B-Protocol
has	O
been	O
ported	O
to	O
Microsoft	B-Application
Windows	I-Application
,	O
macOS	B-Application
,	O
OpenVMS	B-Operating_System
,	O
HP-UX	B-Application
,	O
AmigaOS	B-Application
,	O
MorphOS	B-Operating_System
and	O
Solaris	O
.	O
</s>
<s>
Since	O
version	O
1.14	O
Wget	B-Protocol
has	O
been	O
able	O
to	O
save	O
its	O
output	O
in	O
the	O
web	O
archiving	O
standard	O
WARC	B-General_Concept
format	O
.	O
</s>
<s>
It	O
has	O
been	O
used	O
as	O
the	O
basis	O
for	O
graphical	B-Application
programs	O
such	O
as	O
GWget	O
for	O
the	O
GNOME	B-Application
Desktop	I-Application
.	O
</s>
<s>
Wget	B-Protocol
descends	O
from	O
an	O
earlier	O
program	O
named	O
Geturl	B-Protocol
by	O
the	O
same	O
author	O
,	O
the	O
development	O
of	O
which	O
commenced	O
in	O
late	O
1995	O
.	O
</s>
<s>
The	O
name	O
changed	O
to	O
Wget	B-Protocol
after	O
the	O
author	O
became	O
aware	O
of	O
an	O
earlier	O
Amiga	B-Device
program	O
named	O
GetURL	B-Protocol
,	O
written	O
by	O
James	O
Burton	O
in	O
AREXX	B-Operating_System
.	O
</s>
<s>
Wget	B-Protocol
filled	O
a	O
gap	O
in	O
the	O
inconsistent	O
web-downloading	O
software	O
available	O
in	O
the	O
mid-1990s	O
.	O
</s>
<s>
No	O
single	O
program	O
could	O
reliably	O
use	O
both	O
HTTP	B-Protocol
and	O
FTP	B-Protocol
to	O
download	B-Application
files	O
.	O
</s>
<s>
Existing	O
programs	O
either	O
supported	B-Application
FTP	B-Protocol
(	O
such	O
as	O
NcFTP	B-Protocol
and	O
dl	O
)	O
or	O
were	O
written	O
in	O
Perl	B-Language
,	O
which	O
was	O
not	O
yet	O
ubiquitous	O
.	O
</s>
<s>
While	O
Wget	B-Protocol
was	O
inspired	O
by	O
features	O
of	O
some	O
of	O
the	O
existing	O
programs	O
,	O
it	O
supported	B-Application
both	O
HTTP	B-Protocol
and	O
FTP	B-Protocol
and	O
could	O
be	O
built	O
using	O
only	O
the	O
standard	O
development	O
tools	O
found	O
on	O
every	O
Unix	B-Application
system	I-Application
.	O
</s>
<s>
At	O
that	O
time	O
many	O
Unix	B-Application
users	O
struggled	O
behind	O
extremely	O
slow	O
university	O
and	O
dial-up	O
Internet	O
connections	O
,	O
leading	O
to	O
a	O
growing	O
need	O
for	O
a	O
downloading	B-Application
agent	O
that	O
could	O
deal	O
with	O
transient	O
network	B-Architecture
failures	O
without	O
assistance	O
from	O
the	O
human	O
operator	O
.	O
</s>
<s>
Wget	B-Protocol
has	O
been	O
designed	O
for	O
robustness	O
over	O
slow	O
or	O
unstable	O
network	B-Architecture
connections	O
.	O
</s>
<s>
If	O
a	O
download	B-Application
does	O
not	O
complete	O
due	O
to	O
a	O
network	B-Architecture
problem	O
,	O
Wget	B-Protocol
will	O
automatically	O
try	O
to	O
continue	O
the	O
download	B-Application
from	O
where	O
it	O
left	O
off	O
,	O
and	O
repeat	O
this	O
until	O
the	O
whole	O
file	O
has	O
been	O
retrieved	O
.	O
</s>
<s>
It	O
was	O
one	O
of	O
the	O
first	O
clients	O
to	O
make	O
use	O
of	O
the	O
then-new	O
Range	O
HTTP	B-Protocol
header	I-Protocol
to	O
support	O
this	O
feature	O
.	O
</s>
<s>
Wget	B-Protocol
can	O
optionally	O
work	O
like	O
a	O
web	B-Application
crawler	I-Application
by	O
extracting	O
resources	O
linked	B-Application
from	O
HTML	B-Language
pages	O
and	O
downloading	B-Application
them	O
in	O
sequence	O
,	O
repeating	O
the	O
process	O
recursively	O
until	O
all	O
the	O
pages	O
have	O
been	O
downloaded	B-Application
or	O
a	O
maximum	O
recursion	O
depth	O
specified	O
by	O
the	O
user	O
has	O
been	O
reached	O
.	O
</s>
<s>
The	O
downloaded	B-Application
pages	O
are	O
saved	O
in	O
a	O
directory	O
structure	O
resembling	O
that	O
on	O
the	O
remote	O
server	O
.	O
</s>
<s>
This	O
"	O
recursive	O
download	B-Application
"	O
enables	O
partial	O
or	O
complete	O
mirroring	O
of	O
web	O
sites	O
via	O
HTTP	B-Protocol
.	I-Protocol
</s>
<s>
Links	O
in	O
downloaded	B-Application
HTML	B-Language
pages	O
can	O
be	O
adjusted	O
to	O
point	O
to	O
locally	O
downloaded	B-Application
material	O
for	O
offline	O
viewing	O
.	O
</s>
<s>
When	O
performing	O
this	O
kind	O
of	O
automatic	O
mirroring	O
of	O
web	O
sites	O
,	O
Wget	B-Protocol
supports	O
the	O
Robots	O
Exclusion	O
Standard	O
(	O
unless	O
the	O
option	O
-e	O
robots	O
=	O
off	O
is	O
used	O
)	O
.	O
</s>
<s>
Recursive	O
download	B-Application
works	O
with	O
FTP	B-Protocol
as	O
well	O
,	O
where	O
Wget	B-Protocol
issues	O
the	O
LIST	O
command	O
to	O
find	O
which	O
additional	O
files	O
to	O
download	B-Application
,	O
repeating	O
this	O
process	O
for	O
directories	O
and	O
files	O
under	O
the	O
one	O
specified	O
in	O
the	O
top	O
URL	O
.	O
</s>
<s>
Shell-like	O
wildcards	B-Algorithm
are	O
supported	B-Application
when	O
the	O
download	B-Application
of	O
FTP	B-Protocol
URLs	O
is	O
requested	O
.	O
</s>
<s>
When	O
downloading	B-Application
recursively	O
over	O
either	O
HTTP	B-Protocol
or	O
FTP	B-Protocol
,	O
Wget	B-Protocol
can	O
be	O
instructed	O
to	O
inspect	O
the	O
timestamps	O
of	O
local	O
and	O
remote	O
files	O
,	O
and	O
download	B-Application
only	O
the	O
remote	O
files	O
newer	O
than	O
the	O
corresponding	O
local	O
ones	O
.	O
</s>
<s>
This	O
allows	O
easy	O
mirroring	O
of	O
HTTP	B-Protocol
and	O
FTP	B-Protocol
sites	I-Protocol
,	O
but	O
is	O
considered	O
inefficient	O
and	O
more	O
error-prone	O
when	O
compared	O
to	O
programs	O
designed	O
for	O
mirroring	O
from	O
the	O
ground	O
up	O
,	O
such	O
as	O
rsync	B-Application
.	O
</s>
<s>
On	O
the	O
other	O
hand	O
,	O
Wget	B-Protocol
does	O
n't	O
require	O
special	O
server-side	O
software	O
for	O
this	O
task	O
.	O
</s>
<s>
Wget	B-Protocol
is	O
non-interactive	O
in	O
the	O
sense	O
that	O
,	O
once	O
started	O
,	O
it	O
does	O
not	O
require	O
user	O
interaction	O
and	O
does	O
not	O
need	O
to	O
control	O
a	O
TTY	B-Device
,	O
being	O
able	O
to	O
log	O
its	O
progress	O
to	O
a	O
separate	O
file	O
for	O
later	O
inspection	O
.	O
</s>
<s>
Users	O
can	O
start	O
Wget	B-Protocol
and	O
log	O
off	O
,	O
leaving	O
the	O
program	O
unattended	O
.	O
</s>
<s>
By	O
contrast	O
,	O
most	O
graphical	B-Application
or	O
text	B-Application
user	I-Application
interface	I-Application
web	B-Application
browsers	I-Application
require	O
the	O
user	O
to	O
remain	O
logged	O
in	O
and	O
to	O
manually	O
restart	O
failed	O
downloads	B-Application
,	O
which	O
can	O
be	O
a	O
great	O
hindrance	O
when	O
transferring	O
a	O
lot	O
of	O
data	O
.	O
</s>
<s>
Written	O
in	O
a	O
highly	O
portable	O
style	O
of	O
C	B-Language
with	O
minimal	O
dependencies	O
on	O
third-party	O
libraries	O
,	O
Wget	B-Protocol
requires	O
little	O
more	O
than	O
a	O
C	B-Language
compiler	O
and	O
a	O
BSD-like	O
interface	O
to	O
TCP/IP	B-Protocol
networking	O
.	O
</s>
<s>
Designed	O
as	O
a	O
Unix	B-Application
program	O
invoked	O
from	O
the	O
Unix	B-Application
shell	I-Application
,	O
the	O
program	O
has	O
been	O
ported	O
to	O
numerous	O
Unix-like	O
environments	O
and	O
systems	O
,	O
including	O
Microsoft	B-Application
Windows	I-Application
via	O
Cygwin	B-Language
,	O
and	O
macOS	B-Application
.	O
</s>
<s>
It	O
is	O
also	O
available	O
as	O
a	O
native	O
Microsoft	B-Application
Windows	I-Application
program	O
as	O
one	O
of	O
the	O
GnuWin	B-Language
packages	O
.	O
</s>
<s>
Wget	B-Protocol
supports	O
download	B-Application
through	O
proxies	B-Application
,	O
which	O
are	O
widely	O
deployed	O
to	O
provide	O
web	O
access	O
inside	O
company	O
firewalls	B-Application
and	O
to	O
cache	O
and	O
quickly	O
deliver	O
frequently	O
accessed	O
content	O
.	O
</s>
<s>
It	O
makes	O
use	O
of	O
HTTP	B-Protocol
persistent	I-Protocol
connections	I-Protocol
where	O
available	O
.	O
</s>
<s>
IPv6	B-Protocol
is	O
supported	B-Application
on	O
systems	O
that	O
include	O
the	O
appropriate	O
interfaces	O
.	O
</s>
<s>
SSL/TLS	B-Protocol
is	O
supported	B-Application
for	O
encrypted	O
downloads	B-Application
using	O
the	O
OpenSSL	B-Language
or	O
GnuTLS	B-Application
library	O
.	O
</s>
<s>
Files	O
larger	O
than	O
2	O
GiB	O
are	O
supported	B-Application
on	O
32-bit	O
systems	O
that	O
include	O
the	O
appropriate	O
interfaces	O
.	O
</s>
<s>
Download	B-Application
speed	O
may	O
be	O
throttled	O
to	O
avoid	O
using	O
up	O
all	O
of	O
the	O
available	O
bandwidth	O
.	O
</s>
<s>
Can	O
save	O
its	O
output	O
in	O
the	O
web	O
archiving	O
standard	O
WARC	B-General_Concept
format	O
,	O
deduplicating	O
from	O
an	O
associated	O
CDX	O
file	O
as	O
required	O
.	O
</s>
<s>
GNU	B-Protocol
Wget	I-Protocol
was	O
written	O
by	O
Hrvoje	O
Nikšić	O
with	O
contributions	O
by	O
many	O
other	O
people	O
,	O
including	O
Dan	O
Harkless	O
,	O
Ian	O
Abbott	O
,	O
and	O
Mauro	O
Tortonesi	O
.	O
</s>
<s>
Wget	B-Protocol
is	O
currently	O
maintained	O
by	O
Giuseppe	O
Scrivano	O
,	O
Tim	O
Rühsen	O
and	O
Darshit	O
Shah	O
.	O
</s>
<s>
The	O
copyright	O
to	O
Wget	B-Protocol
belongs	O
to	O
the	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
,	O
whose	O
policy	O
is	O
to	O
require	O
copyright	O
assignments	O
for	O
all	O
non-trivial	O
contributions	O
to	O
GNU	B-Operating_System
software	O
.	O
</s>
<s>
GNU	B-Protocol
Wget	I-Protocol
is	O
distributed	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
version	O
3	O
or	O
later	O
,	O
with	O
a	O
special	O
exception	O
that	O
allows	O
distribution	O
of	O
binaries	O
linked	B-Application
against	O
the	O
OpenSSL	B-Language
library	O
.	O
</s>
<s>
If	O
you	O
modify	O
this	O
program	O
,	O
or	O
any	O
covered	O
work	O
,	O
by	O
linking	B-Application
or	O
combining	O
it	O
with	O
the	O
OpenSSL	B-Language
project	O
's	O
OpenSSL	B-Language
library	O
(	O
or	O
a	O
modified	O
version	O
of	O
that	O
library	O
)	O
,	O
containing	O
parts	O
covered	O
by	O
the	O
terms	O
of	O
the	O
OpenSSL	B-Language
or	O
SSLeay	O
licenses	O
,	O
the	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
grants	O
you	O
additional	O
permission	O
to	O
convey	O
the	O
resulting	O
work	O
.	O
</s>
<s>
Corresponding	O
Source	O
for	O
a	O
non-source	O
form	O
of	O
such	O
a	O
combination	O
shall	O
include	O
the	O
source	O
code	O
for	O
the	O
parts	O
of	O
OpenSSL	B-Language
used	O
as	O
well	O
as	O
that	O
of	O
the	O
covered	O
work	O
.	O
</s>
<s>
It	O
is	O
expected	O
that	O
the	O
exception	O
clause	O
will	O
be	O
removed	O
once	O
Wget	B-Protocol
is	O
modified	O
to	O
also	O
link	B-Application
with	O
the	O
GnuTLS	B-Application
library	O
.	O
</s>
<s>
Wget	B-Protocol
's	O
documentation	O
,	O
in	O
the	O
form	O
of	O
a	O
Texinfo	B-Application
reference	O
manual	O
,	O
is	O
distributed	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-Application
Free	I-Application
Documentation	I-Application
License	I-Application
,	O
version	O
1.2	O
or	O
later	O
.	O
</s>
<s>
The	O
man	B-Protocol
page	I-Protocol
usually	O
distributed	O
on	O
Unix-like	O
systems	O
is	O
automatically	O
generated	O
from	O
a	O
subset	O
of	O
the	O
Texinfo	B-Application
manual	O
and	O
falls	O
under	O
the	O
terms	O
of	O
the	O
same	O
license	B-License
.	O
</s>
<s>
Wget	B-Protocol
is	O
developed	O
in	O
an	O
open	O
fashion	O
,	O
most	O
of	O
the	O
design	O
decisions	O
typically	O
being	O
discussed	O
on	O
the	O
public	O
mailing	O
list	O
followed	O
by	O
users	O
and	O
developers	O
.	O
</s>
<s>
Bug	O
reports	O
and	O
patches	B-Application
are	O
relayed	O
to	O
the	O
same	O
list	O
.	O
</s>
<s>
The	O
preferred	O
method	O
of	O
contributing	O
to	O
Wget	B-Protocol
's	O
code	O
and	O
documentation	O
is	O
through	O
source	O
updates	O
in	O
the	O
form	O
of	O
textual	O
patches	B-Application
generated	O
by	O
the	O
diff	B-Application
utility	I-Application
.	O
</s>
<s>
Patches	B-Application
intended	O
for	O
inclusion	O
in	O
Wget	B-Protocol
are	O
submitted	O
to	O
the	O
mailing	O
list	O
where	O
they	O
are	O
reviewed	O
by	O
the	O
maintainers	O
.	O
</s>
<s>
Patches	B-Application
that	O
pass	O
the	O
maintainers	O
 '	O
scrutiny	O
are	O
installed	O
in	O
the	O
sources	O
.	O
</s>
<s>
Instructions	O
on	O
patch	B-Application
creation	O
as	O
well	O
as	O
style	O
guidelines	O
are	O
outlined	O
on	O
the	O
project	O
's	O
wiki	O
.	O
</s>
<s>
The	O
source	O
code	O
can	O
also	O
be	O
tracked	O
via	O
a	O
remote	O
version	B-Architecture
control	I-Architecture
repository	O
that	O
hosts	O
revision	O
history	O
beginning	O
with	O
the	O
1.5.3	O
release	O
.	O
</s>
<s>
The	O
repository	O
is	O
currently	O
running	O
Git	B-Application
.	O
</s>
<s>
Prior	O
to	O
that	O
,	O
the	O
source	O
code	O
had	O
been	O
hosted	O
on	O
(	O
in	O
reverse	O
order	O
)	O
:	O
Bazaar	B-Protocol
,	O
Mercurial	B-Protocol
,	O
Subversion	B-Application
,	O
and	O
via	O
CVS	B-Application
.	O
</s>
<s>
When	O
a	O
sufficient	O
number	O
of	O
features	O
or	O
bug	O
fixes	O
accumulate	O
during	O
development	O
,	O
Wget	B-Protocol
is	O
released	O
to	O
the	O
general	O
public	O
via	O
the	O
GNU	B-Operating_System
FTP	B-Protocol
site	I-Protocol
and	O
its	O
mirrors	O
.	O
</s>
<s>
Releases	O
are	O
numbered	O
as	O
versions	O
of	O
the	O
form	O
of	O
major.minor[.revision],	O
such	O
as	O
Wget	B-Protocol
1.11	O
or	O
Wget	B-Protocol
1.8.2	O
.	O
</s>
<s>
An	O
increase	O
of	O
the	O
major	O
version	O
number	O
represents	O
large	O
and	O
possibly	O
incompatible	O
changes	O
in	O
Wget	B-Protocol
's	O
behavior	O
or	O
a	O
radical	O
redesign	O
of	O
the	O
code	O
base	O
.	O
</s>
<s>
Revision	O
zero	O
is	O
omitted	O
,	O
meaning	O
that	O
for	O
example	O
Wget	B-Protocol
1.11	O
is	O
the	O
same	O
as	O
1.11.0	O
.	O
</s>
<s>
Wget	B-Protocol
does	O
not	O
use	O
the	O
odd-even	O
release	O
number	O
convention	O
popularized	O
by	O
Linux	B-Application
.	O
</s>
<s>
Wget	B-Protocol
makes	O
an	O
appearance	O
in	O
the	O
2010	O
Columbia	O
Pictures	O
motion	O
picture	O
release	O
,	O
The	O
Social	O
Network	B-Architecture
.	O
</s>
<s>
The	O
lead	O
character	O
,	O
loosely	O
based	O
on	O
Facebook	B-Application
co-founder	O
Mark	O
Zuckerberg	O
,	O
uses	O
Wget	B-Protocol
to	O
aggregate	O
student	O
photos	O
from	O
various	O
Harvard	O
University	O
housing-facility	O
directories	O
.	O
</s>
<s>
The	O
following	O
releases	O
represent	O
notable	O
milestones	O
in	O
Wget	B-Protocol
's	O
development	O
.	O
</s>
<s>
Features	O
listed	O
next	O
to	O
each	O
release	O
are	O
edited	O
for	O
brevity	O
and	O
do	O
not	O
constitute	O
comprehensive	O
information	O
about	O
the	O
release	O
,	O
which	O
is	O
available	O
in	O
the	O
NEWS	O
file	O
distributed	O
with	O
Wget	B-Protocol
.	O
</s>
<s>
Geturl	B-Protocol
1.0	O
,	O
released	O
January	O
1996	O
,	O
was	O
the	O
first	O
publicly	O
available	O
release	O
.	O
</s>
<s>
The	O
first	O
English-language	O
announcement	O
can	O
be	O
traced	O
to	O
a	O
Usenet	O
news	O
posting	O
,	O
which	O
probably	O
refers	O
to	O
Geturl	B-Protocol
1.3.4	O
released	O
in	O
June	O
.	O
</s>
<s>
Wget	B-Protocol
1.4.0	O
,	O
released	O
November	O
1996	O
,	O
was	O
the	O
first	O
version	O
to	O
use	O
the	O
name	O
Wget	B-Protocol
.	O
</s>
<s>
It	O
was	O
also	O
the	O
first	O
release	O
distributed	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
GPL	I-License
,	O
Geturl	B-Protocol
having	O
been	O
distributed	O
under	O
an	O
ad	O
hoc	O
no-warranty	O
license	B-License
.	O
</s>
<s>
Wget	B-Protocol
1.4.3	O
,	O
released	O
February	O
1997	O
,	O
was	O
the	O
first	O
version	O
released	O
as	O
part	O
of	O
the	B-Operating_System
GNU	I-Operating_System
project	I-Operating_System
with	O
the	O
copyright	O
assigned	O
to	O
the	O
FSF	B-Operating_System
.	O
</s>
<s>
Wget	B-Protocol
1.5.3	O
,	O
released	O
September	O
1998	O
,	O
was	O
a	O
milestone	O
in	O
the	O
program	O
's	O
popularity	O
.	O
</s>
<s>
This	O
version	O
was	O
bundled	O
with	O
many	O
Linux	B-Application
based	O
distributions	O
,	O
which	O
exposed	O
the	O
program	O
to	O
a	O
much	O
wider	O
audience	O
.	O
</s>
<s>
Wget	B-Protocol
1.6	O
,	O
released	O
December	O
1999	O
,	O
incorporated	O
many	O
bug	O
fixes	O
for	O
the	O
(	O
by	O
then	O
stale	O
)	O
1.5.3	O
release	O
,	O
largely	O
thanks	O
to	O
the	O
effort	O
of	O
Dan	O
Harkless	O
.	O
</s>
<s>
Wget	B-Protocol
1.7	O
,	O
released	O
June	O
2001	O
,	O
introduced	O
SSL	B-Protocol
support	O
,	O
cookies	B-Application
,	O
and	O
persistent	B-Protocol
connections	I-Protocol
.	O
</s>
<s>
Wget	B-Protocol
1.8	O
,	O
released	O
December	O
2001	O
,	O
added	O
bandwidth	O
throttling	O
,	O
new	O
progress	O
indicators	O
,	O
and	O
the	O
breadth-first	O
traversal	O
of	O
the	O
hyperlink	O
graph	O
.	O
</s>
<s>
Wget	B-Protocol
1.9	O
,	O
released	O
October	O
2003	O
,	O
included	O
experimental	O
IPv6	B-Protocol
support	O
,	O
and	O
ability	O
to	O
POST	O
data	O
to	O
HTTP	B-Application
servers	I-Application
.	O
</s>
<s>
Wget	B-Protocol
1.10	O
,	O
released	O
June	O
2005	O
,	O
introduced	O
large	B-Application
file	I-Application
support	I-Application
,	O
IPv6	B-Protocol
support	O
on	O
dual-family	O
systems	O
,	O
NTLM	O
authorization	O
,	O
and	O
SSL	B-Protocol
improvements	O
.	O
</s>
<s>
Wget	B-Protocol
1.11	O
,	O
released	O
January	O
2008	O
,	O
moved	O
to	O
version	O
3	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
and	O
added	O
preliminary	O
support	O
for	O
the	O
Content-Disposition	O
header	O
,	O
which	O
is	O
often	O
used	O
by	O
CGI	B-Language
scripts	I-Language
to	O
indicate	O
the	O
name	O
of	O
a	O
file	O
for	O
downloading	B-Application
.	O
</s>
<s>
Security-related	O
improvements	O
were	O
also	O
made	O
to	O
the	O
HTTP	B-Protocol
authentication	O
code	O
.	O
</s>
<s>
Wget	B-Protocol
1.12	O
,	O
released	O
September	O
2009	O
,	O
added	O
support	O
for	O
parsing	O
URLs	O
from	O
CSS	B-Language
content	O
on	O
the	O
web	O
,	O
and	O
for	O
handling	O
Internationalized	B-Protocol
Resource	I-Protocol
Identifiers	I-Protocol
.	O
</s>
<s>
Wget	B-Protocol
1.13	O
,	O
released	O
August	O
2011	O
,	O
supports	O
HTTP/1.1	B-Protocol
,	O
fixed	O
some	O
portability	O
issues	O
,	O
and	O
used	O
the	O
GnuTLS	B-Application
library	O
by	O
default	O
for	O
secure	O
connections	O
.	O
</s>
<s>
Wget	B-Protocol
1.14	O
,	O
released	O
August	O
2012	O
,	O
improved	O
support	O
for	O
TLS	O
and	O
added	O
support	O
for	O
Digest	O
Access	O
Authentication	O
.	O
</s>
<s>
Wget	B-Protocol
1.15	O
,	O
released	O
January	O
2014	O
,	O
added	O
—	O
https-only	O
and	O
support	O
for	O
Perfect-Forward	O
Secrecy	O
.	O
</s>
<s>
Wget	B-Protocol
1.16	O
,	O
released	O
October	O
2014	O
,	O
changed	O
the	O
default	O
progress	O
bar	O
output	O
,	O
closed	O
,	O
added	O
support	O
for	O
libpsl	O
to	O
verify	O
cookie	B-Application
domains	O
,	O
and	O
introduced	O
—	O
start-pos	O
to	O
allow	O
starting	O
downloads	B-Application
from	O
a	O
specified	O
position	O
.	O
</s>
<s>
Wget	B-Protocol
1.17	O
,	O
released	O
November	O
2015	O
,	O
removed	O
FTP	B-Protocol
passive	O
to	O
active	O
fallback	O
due	O
to	O
privacy	O
concerns	O
,	O
added	O
support	O
for	O
FTPS	B-Protocol
and	O
for	O
—	O
if-modified-since	O
.	O
</s>
<s>
Wget	B-Protocol
1.18	O
,	O
released	O
June	O
2016	O
,	O
resolved	O
the	O
issue	O
,	O
and	O
added	O
the	O
"	O
--bind-dns-address	O
"	O
and	O
"	O
--dns-servers	O
"	O
options	O
.	O
</s>
<s>
Wget	B-Protocol
1.19	O
,	O
released	O
February	O
2017	O
,	O
added	O
new	O
options	O
for	O
processing	O
a	O
Metalink	O
file	O
;	O
version	O
1.19.1	O
added	O
the	O
—	O
retry-on-http-error	O
option	O
to	O
retry	O
a	O
download	B-Application
if	O
the	O
Web	B-Application
server	I-Application
responds	O
with	O
a	O
given	O
HTTP	B-Protocol
status	O
code	O
.	O
</s>
<s>
Wget	B-Protocol
1.20	O
,	O
released	O
November	O
2018	O
,	O
added	O
--retry-on-host-error	O
for	O
more	O
reliability	O
and	O
--accept-regex	O
,	O
--reject-regex	O
options	O
for	O
recursive	O
FTP	B-Protocol
retrievals	O
.	O
</s>
<s>
GNU	B-Protocol
Wget2	I-Protocol
2.0.0	O
was	O
released	O
on	O
26	O
September	O
2021	O
.	O
</s>
<s>
It	O
is	O
licensed	O
under	O
the	O
GPL-3.0-or-later	B-License
license	B-License
,	O
and	O
is	O
wrapped	O
around	O
Libwget	O
which	O
is	O
under	O
the	O
LGPL-3.0-or-later	B-Application
license	B-License
.	O
</s>
<s>
It	O
has	O
many	O
improvements	O
in	O
comparison	O
to	O
Wget	B-Protocol
,	O
particularly	O
,	O
in	O
many	O
cases	O
Wget2	B-Protocol
downloads	B-Application
much	O
faster	O
than	O
Wget1.x	O
due	O
to	O
support	O
of	O
the	O
following	O
protocols	O
and	O
technologies	O
:	O
</s>
<s>
HTTP/2	B-Protocol
,	O
</s>
<s>
HTTP	B-Protocol
compression	I-Protocol
,	O
</s>
<s>
use	O
of	O
If-Modified-Since	O
HTTP	B-Protocol
header	I-Protocol
,	O
</s>
<s>
TCP	B-Protocol
Fast	I-Protocol
Open	I-Protocol
.	O
</s>
<s>
GWget	O
is	O
a	O
free	O
software	O
graphical	B-Application
user	I-Application
interface	I-Application
for	O
Wget	B-Protocol
.	O
</s>
<s>
It	O
is	O
developed	O
by	O
David	O
Sedeño	O
Fernández	O
and	O
is	O
part	O
of	O
the	O
GNOME	B-Application
project	O
.	O
</s>
<s>
GWget	O
supports	O
all	O
of	O
the	O
main	O
features	O
that	O
Wget	B-Protocol
does	O
,	O
as	O
well	O
as	O
parallel	O
downloads	B-Application
.	O
</s>
<s>
Cliget	O
is	O
an	O
open	O
source	O
Firefox	B-Application
addon	O
downloader	B-Application
that	O
uses	O
Curl	B-Language
,	O
Wget	B-Protocol
and	O
Aria2	O
.	O
</s>
<s>
There	O
exist	O
clones	O
of	O
GNU	B-Protocol
Wget	I-Protocol
intended	O
for	O
embedded	B-Architecture
systems	I-Architecture
,	O
which	O
are	O
often	O
limited	O
in	O
memory	O
and	O
storage	O
.	O
</s>
<s>
They	O
support	O
its	O
most	O
basic	O
options	O
,	O
usually	O
limited	O
to	O
downloading	B-Application
.	O
</s>
