<s>
SRWare	B-Protocol
Iron	I-Protocol
is	O
a	O
Chromium-based	O
web	B-Application
browser	I-Application
developed	O
by	O
the	O
German	O
company	O
SRWare	O
.	O
</s>
<s>
It	O
primarily	O
aims	O
to	O
eliminate	O
usage	O
tracking	O
and	O
other	O
privacy-compromising	O
functionality	O
that	O
the	B-Application
Google	I-Application
Chrome	B-Application
browser	I-Application
includes	O
.	O
</s>
<s>
Iron	O
ships	O
with	O
certain	O
Chromium	B-Language
privacy	O
options	O
switched	O
on	O
by	O
default	O
,	O
it	O
provides	O
some	O
additional	O
features	O
that	O
distinguish	O
it	O
from	O
Google	B-Application
Chrome	I-Application
.	O
</s>
<s>
Iron	O
was	O
first	O
released	O
as	O
a	O
beta	O
version	O
on	O
18	O
September	O
2008	O
,	O
16	O
days	O
after	O
Google	B-Application
Chrome	I-Application
's	O
initial	O
release	O
.	O
</s>
<s>
On	O
26	O
May	O
2009	O
a	O
Preview-Release	O
(	O
Pre-Alpha	O
)	O
of	O
Iron	O
came	O
out	O
for	O
Linux	B-Application
.	O
</s>
<s>
And	O
on	O
7	O
January	O
2010	O
a	O
beta	O
version	O
for	O
macOS	B-Application
was	O
released	O
.	O
</s>
<s>
More	O
recent	O
versions	O
of	O
Iron	O
have	O
been	O
released	O
since	O
then	O
,	O
which	O
has	O
gained	O
the	O
features	O
of	O
the	O
underlying	O
Chromium	B-Language
codebase	O
,	O
including	O
Google	B-Application
Chrome	I-Application
theme	O
support	O
,	O
a	O
user	B-Protocol
agent	I-Protocol
switcher	I-Protocol
,	O
an	O
extension	O
system	O
,	O
integrated	O
Adblocker	O
and	O
improved	O
Linux	B-Application
support	O
.	O
</s>
<s>
The	O
following	O
Google	B-Application
Chrome	I-Application
features	O
are	O
not	O
present	O
in	O
Iron	O
:	O
</s>
<s>
RLZ	O
identifier	O
,	O
an	O
encoded	O
string	O
sent	O
together	O
with	O
all	O
queries	O
to	O
Google	B-Application
.	I-Application
</s>
<s>
Google	B-Application
Search	I-Application
access	O
on	O
startup	O
for	O
users	O
with	O
Google	B-Application
as	O
default	O
search	O
.	O
</s>
<s>
Google-hosted	O
error	O
pages	O
when	O
a	O
server	O
is	O
not	O
present	O
.	O
</s>
<s>
Google	B-Application
Updater	O
automatic	O
installation	O
.	O
</s>
<s>
Opt-in	O
sending	O
of	O
both	O
browser	B-Application
usage	O
statistics	O
and	O
crash	O
information	O
to	O
Google	B-Application
.	I-Application
</s>
<s>
Google	B-Application
Native	I-Application
Client	I-Application
.	O
</s>
<s>
A	O
user	B-Protocol
agent	I-Protocol
switcher	I-Protocol
.	O
</s>
<s>
In	O
December	O
2014	O
,	O
Lifehacker	O
said	O
that	O
Iron	O
offers	O
little	O
that	O
is	O
not	O
available	O
by	O
simply	O
configuring	O
Google	B-Application
Chrome	I-Application
's	O
privacy	O
settings	O
.	O
</s>
<s>
However	O
,	O
the_simple_computer	O
wrote	O
that	O
Iron	O
removes	O
the	B-Application
Google	I-Application
Native	B-Application
Client	I-Application
,	O
Google	B-Application
's	I-Application
custom	O
navigation	O
and	O
error	O
pages	O
and	O
other	O
similar	O
features	O
.	O
</s>
<s>
In	O
October	O
2014	O
,	O
the_simple_computer	O
wrote	O
that	O
even	O
though	O
SRWare	B-Protocol
Iron	I-Protocol
released	O
under	O
the	O
BSD	B-Operating_System
licence	I-Operating_System
,	O
the	O
latest	O
source	O
code	O
publicly	O
available	O
at	O
the	O
time	O
was	O
incomplete	O
and	O
for	O
version	O
6	O
,	O
even	O
though	O
the	O
binaries	O
were	O
on	O
version	O
14	O
;	O
source	O
code	O
was	O
moved	O
to	O
RapidShare	O
in	O
2013	O
,	O
with	O
external	O
access	O
blocked	O
,	O
effectively	O
making	O
the	O
program	O
"	O
entirely	O
closed	O
source	O
"	O
.	O
</s>
<s>
In	O
the	O
same	O
year	O
,	O
Lifehacker	O
wrote	O
that	O
SRWare	O
had	O
not	O
released	O
the	O
browser	B-Application
's	O
source	O
code	O
for	O
years	O
.	O
</s>
<s>
In	O
2015	O
,	O
SRWare	O
temporarily	O
resumed	O
releasing	O
the	O
source	O
code	O
for	O
the	O
browser	B-Application
.	O
</s>
