<s>
Ruffle	B-Operating_System
is	O
an	O
emulator	B-Application
for	O
SWF	O
files	O
.	O
</s>
<s>
Ruffle	B-Operating_System
is	O
freely	B-Application
licensed	I-Application
and	O
developed	O
openly	O
on	O
GitHub	B-Application
.	O
</s>
<s>
Following	O
the	O
deprecation	O
and	O
disabling	O
of	O
Adobe	B-Operating_System
Flash	I-Operating_System
Player	I-Operating_System
,	O
some	O
websites	O
adopted	O
Ruffle	B-Operating_System
so	O
users	O
could	O
continue	O
to	O
view	O
and	O
interact	O
with	O
legacy	B-Device
Flash	O
content	O
.	O
</s>
<s>
Ruffle	B-Operating_System
is	O
written	O
in	O
the	O
Rust	B-Application
programming	I-Application
language	I-Application
,	O
featuring	O
a	O
desktop	O
client	O
and	O
a	O
web	O
client	O
.	O
</s>
<s>
Website	O
authors	O
can	O
load	O
Ruffle	B-Operating_System
using	O
JavaScript	O
or	O
users	O
can	O
install	O
a	O
browser	O
extension	O
that	O
works	O
on	O
any	O
website	O
.	O
</s>
<s>
The	O
web	O
client	O
relies	O
on	O
Rust	B-Application
being	O
compiled	O
to	O
WebAssembly	B-Language
,	O
which	O
allows	O
it	O
to	O
run	O
inside	O
a	O
sandbox	O
,	O
a	O
significant	O
improvement	O
compared	O
to	O
Flash	B-Operating_System
Player	I-Operating_System
,	O
which	O
had	O
a	O
multitude	O
of	O
security	O
issues	O
.	O
</s>
<s>
The	O
Rust	B-Application
language	I-Application
itself	O
protects	O
against	O
common	O
memory	O
safety	O
issues	O
that	O
Flash	B-Operating_System
Player	I-Operating_System
suffered	O
from	O
,	O
such	O
as	O
use	B-Error_Name
after	I-Error_Name
free	I-Error_Name
or	O
buffer	B-General_Concept
overflows	I-General_Concept
.	O
</s>
<s>
The	O
desktop	O
client	O
uses	O
a	O
command-line	B-Application
interface	I-Application
to	O
open	O
SWF	O
files	O
,	O
with	O
a	O
full	O
graphical	B-Application
user	I-Application
interface	I-Application
planned	O
for	O
the	O
future	O
.	O
</s>
<s>
As	O
of	O
April	O
2023	O
,	O
Ruffle	B-Operating_System
primarily	O
supports	O
older	O
Flash	O
content	O
,	O
which	O
use	O
ActionScript	O
1.0	O
and	O
2.0	O
,	O
with	O
95%	O
of	O
the	O
language	O
and	O
73%	O
of	O
the	O
API	O
having	O
been	O
implemented	O
.	O
</s>
<s>
Adobe	O
announced	O
in	O
2017	O
that	O
it	O
would	O
stop	O
supporting	O
Flash	B-Operating_System
Player	I-Operating_System
on	O
January	O
1	O
,	O
2021	O
,	O
encouraging	O
the	O
use	O
of	O
HTML5	O
instead	O
.	O
</s>
<s>
That	O
same	O
year	O
The	O
New	O
York	O
Times	O
began	O
working	O
on	O
archiving	O
old	O
web	O
content	O
so	O
readers	O
could	O
view	O
webpages	O
as	O
they	O
were	O
originally	O
published	O
,	O
and	O
now	O
uses	O
Ruffle	B-Operating_System
for	O
old	O
Flash	O
content	O
.	O
</s>
<s>
Adobe	O
started	O
blocking	O
the	O
use	O
of	O
Flash	B-Operating_System
Player	I-Operating_System
on	O
January	O
12	O
,	O
2021	O
using	O
a	O
kill	B-Device
switch	I-Device
.	O
</s>
<s>
Mike	O
Welsh	O
,	O
who	O
worked	O
at	O
Newgrounds	B-Operating_System
until	O
2012	O
,	O
previously	O
worked	O
on	O
an	O
open	O
source	O
project	O
named	O
Swivel	O
to	O
archive	O
Flash	O
content	O
into	O
videos	O
.	O
</s>
<s>
Later	O
renamed	O
Ruffle	B-Operating_System
,	O
this	O
project	O
would	O
morph	O
into	O
a	O
Flash	B-Operating_System
Player	I-Operating_System
emulator	B-Application
written	O
in	O
Rust	B-Application
,	O
with	O
a	O
desktop	O
and	O
web	O
client	O
.	O
</s>
<s>
Between	O
2019	O
and	O
2020	O
,	O
some	O
websites	O
announced	O
they	O
would	O
be	O
using	O
Ruffle	B-Operating_System
.	O
</s>
<s>
Newgrounds	B-Operating_System
founder	O
Tom	O
Fulp	B-Operating_System
said	O
they	O
realized	O
"	O
the	O
end	O
of	O
Flash	O
was	O
coming	O
"	O
in	O
2010	O
,	O
but	O
did	O
not	O
know	O
when	O
.	O
</s>
<s>
In	O
2019	O
,	O
Newgrounds	B-Operating_System
announced	O
it	O
was	O
sponsoring	O
the	O
development	O
of	O
Ruffle	B-Operating_System
,	O
and	O
would	O
use	O
it	O
for	O
all	O
Flash	O
content	O
,	O
starting	O
with	O
animations	O
and	O
later	O
interactive	O
games	O
.	O
</s>
<s>
The	O
switch	O
allowed	O
Newgrounds	B-Operating_System
to	O
offer	O
some	O
touch-friendly	O
games	O
on	O
mobile	O
for	O
the	O
first	O
time	O
.	O
</s>
<s>
Fulp	B-Operating_System
told	O
The	O
Washington	O
Post	O
:	O
"	O
We	O
've	O
been	O
integrating	O
Ruffle	B-Operating_System
with	O
the	O
site	O
and	O
so	O
far	O
,	O
the	O
majority	O
of	O
content	O
[	O
on	O
Newgrounds ]	O
from	O
before	O
2007	O
is	O
running	O
with	O
Ruffle	B-Operating_System
"	O
.	O
</s>
<s>
In	O
2020	O
,	O
Coolmath	O
Games	O
announced	O
that	O
that	O
they	O
would	O
be	O
using	O
technologies	O
such	O
as	O
Ruffle	B-Operating_System
to	O
make	O
Flash	O
content	O
playable	O
.	O
</s>
<s>
In	O
November	O
2020	O
,	O
Internet	O
Archive	O
announced	O
they	O
will	O
be	O
using	O
Ruffle	B-Operating_System
to	O
preserve	O
Flash	O
games	O
and	O
animations	O
.	O
</s>
<s>
In	O
December	O
2020	O
,	O
Armor	O
Games	O
announced	O
that	O
Ruffle	B-Operating_System
had	O
been	O
chosen	O
as	O
their	O
player	O
for	O
Flash	O
content	O
.	O
</s>
<s>
Homestar	B-Operating_System
Runner	I-Operating_System
has	O
also	O
announced	O
the	O
implementation	O
of	O
Ruffle	B-Operating_System
for	O
their	O
cartoons	O
and	O
games	O
.	O
</s>
<s>
Though	O
certain	O
elements	O
of	O
the	O
website	O
itself	O
are	O
currently	O
unsupported	O
by	O
the	O
emulator	B-Application
,	O
most	O
of	O
the	O
site	O
's	O
content	O
has	O
shifted	O
to	O
containment	O
within	O
a	O
Ruffle	B-Operating_System
window	O
at	O
the	O
very	O
least	O
.	O
</s>
<s>
Aside	O
from	O
the	O
official	O
website	O
,	O
this	O
change	O
was	O
also	O
soft	O
announced	O
via	O
Strong	O
Bad	O
's	O
Twitter	B-Application
account	I-Application
.	O
</s>
