<s>
Moonlight	B-Language
was	O
a	O
free	B-Application
and	I-Application
open	I-Application
source	I-Application
implementation	O
for	O
Linux	B-Application
and	O
other	O
Unix-based	O
operating	O
systems	O
of	O
the	O
now	O
deprecated	O
Microsoft	B-Application
Silverlight	I-Application
application	O
framework	O
,	O
developed	O
and	O
then	O
abandoned	O
by	O
the	O
Mono	B-Application
Project	I-Application
.	O
</s>
<s>
Like	O
Silverlight	B-Application
,	O
Moonlight	B-Language
was	O
a	O
web	B-Application
application	I-Application
framework	I-Application
which	O
provided	O
capabilities	O
similar	O
to	O
those	O
of	O
Adobe	B-Operating_System
Flash	I-Operating_System
,	O
integrating	O
multimedia	O
,	O
graphics	O
,	O
animations	O
and	O
interactivity	O
into	O
a	O
single	O
runtime	O
environment	O
.	O
</s>
<s>
In	O
an	O
interview	O
in	O
the	O
beginning	O
of	O
June	O
2007	O
,	O
Miguel	O
de	O
Icaza	O
said	O
the	O
Mono	B-Application
team	O
expected	O
to	O
offer	O
a	O
"	O
feasibility	O
'	O
alpha	O
 '	O
demo	O
"	O
in	O
mid-June	O
2007	O
,	O
with	O
support	O
for	O
Mozilla	B-Application
Firefox	I-Application
on	O
Linux	B-Application
by	O
the	O
end	O
of	O
the	O
year	O
.	O
</s>
<s>
After	O
a	O
21-day	O
hacking	O
spree	O
by	O
the	O
Mono	B-Application
team	O
(	O
including	O
Chris	O
Toshok	O
,	O
Larry	O
Ewing	O
and	O
Jeffrey	O
Stedfast	O
among	O
others	O
)	O
,	O
a	O
public	O
demo	O
was	O
shown	O
at	O
Microsoft	O
ReMIX	O
conference	O
in	O
Paris	O
,	O
France	O
on	O
June	O
21	O
,	O
2007	O
.	O
</s>
<s>
However	O
,	O
in	O
September	O
2007	O
,	O
developers	O
still	O
needed	O
to	O
install	O
and	O
compile	O
a	O
lot	O
of	O
Mono	B-Application
and	O
Olive	O
(	O
the	O
experimental	O
Mono	B-Application
subproject	O
for	O
.NET	B-Application
3.0	O
support	O
)	O
modules	O
from	O
the	O
Mono	B-Application
SVN	B-Application
repository	O
to	O
be	O
able	O
to	O
test	O
Moonlight	B-Language
.	O
</s>
<s>
A	O
Moonlight	B-Language
IDE	B-Application
,	O
named	O
Lunar	O
Eclipse	O
,	O
exists	O
in	O
SVN	B-Application
for	O
XAML	B-Device
designs	O
.	O
</s>
<s>
Moonlight	B-Language
uses	O
Cairo	B-Language
for	O
rendering	O
.	O
</s>
<s>
Moonlight	B-Language
was	O
provided	O
as	O
a	O
plugin	O
for	O
Firefox	B-Application
and	O
Chrome	O
on	O
popular	O
Linux	B-Application
distributions	O
.	O
</s>
<s>
The	O
plugin	O
itself	O
does	O
not	O
include	O
a	O
media	B-General_Concept
codec	I-General_Concept
pack	O
,	O
but	O
when	O
the	O
Moonlight	B-Language
plugin	O
detects	O
playable	O
media	O
it	O
refers	O
users	O
to	O
download	O
a	O
free	O
Media	B-General_Concept
codec	I-General_Concept
pack	O
from	O
Microsoft	O
.	O
</s>
<s>
Moonlight	B-Language
2.0	O
tracked	O
the	O
Silverlight	B-Application
2.0	O
implementation	O
.	O
</s>
<s>
The	O
first	O
completed	O
version	O
,	O
Moonlight	B-Language
1.0	O
,	O
supporting	O
Silverlight	B-Application
1.0	O
,	O
was	O
released	O
in	O
January	O
2009	O
.	O
</s>
<s>
Moonlight	B-Language
2.0	O
was	O
released	O
in	O
December	O
2009	O
.	O
</s>
<s>
The	O
Moonlight	B-Language
2.0	O
release	O
also	O
contained	O
some	O
features	O
of	O
Silverlight	B-Application
3	I-Application
including	O
a	O
pluggable	O
media	O
framework	O
which	O
allowed	O
Moonlight	B-Language
to	O
work	O
with	O
pluggable	O
open	O
codecs	B-General_Concept
,	O
such	O
as	O
Theora	B-Algorithm
and	O
Dirac	B-Application
.	O
</s>
<s>
Preview	O
releases	O
of	O
Moonlight	B-Language
4.0	O
,	O
targeting	O
Silverlight	B-Application
4	O
compatibility	O
,	O
were	O
released	O
in	O
early	O
2011	O
.	O
</s>
<s>
In	O
April	O
2011	O
,	O
the	O
Moonlight	B-Language
team	O
demonstrated	O
Moonlight	B-Language
running	O
on	O
Android	O
tablets	O
and	O
phones	O
at	O
the	O
MIX11	O
Web	O
Developers	O
conference	O
in	O
Las	O
Vegas	O
.	O
</s>
<s>
Shortly	O
after	O
the	O
April	O
2011	O
release	O
,	O
Attachmate	O
,	O
parent	O
to	O
developer	O
Mono	B-Application
,	O
laid	O
off	O
an	O
undisclosed	O
number	O
of	O
Mono	B-Application
employees	O
,	O
and	O
announced	O
a	O
deal	O
with	O
startup	O
Xamarin	B-Application
for	O
Mono	B-Application
development	O
and	O
support	O
.	O
</s>
<s>
At	O
that	O
time	O
,	O
Xamarin	B-Application
CEO	O
Nat	O
Friedman	O
affirmed	O
their	O
commitment	O
to	O
the	O
Moonlight	B-Language
project	O
,	O
although	O
there	O
were	O
no	O
outward	O
signs	O
of	O
any	O
further	O
development	O
afterward	O
.	O
</s>
<s>
In	O
December	O
2011	O
,	O
de	O
Icaza	O
announced	O
that	O
work	O
on	O
Moonlight	B-Language
had	O
stopped	O
with	O
no	O
future	O
plans	O
.	O
</s>
<s>
He	O
advised	O
developers	O
to	O
separate	O
user	O
interface	O
code	O
from	O
the	O
rest	O
of	O
their	O
application	O
development	O
to	O
ensure	O
"	O
a	O
great	O
UI	O
experience	O
on	O
every	O
platform	O
(	O
Mac	O
,	O
Linux	B-Application
,	O
Android	O
,	O
iOS	O
,	O
Windows	O
and	O
Web	O
)	O
"	O
without	O
being	O
dependent	O
on	O
third	O
party	O
APIs	B-Application
.	O
</s>
<s>
Silverlight	B-Application
supports	O
Digital	O
Rights	O
Management	O
in	O
its	O
multimedia	O
stack	O
,	O
but	O
Microsoft	O
will	O
not	O
license	O
their	O
PlayReady	O
DRM	O
software	O
for	O
the	O
Moonlight	B-Language
project	O
to	O
use	O
and	O
so	O
Moonlight	B-Language
is	O
unable	O
to	O
play	O
encrypted	O
content	O
.	O
</s>
<s>
Moonlight	B-Language
was	O
also	O
usable	O
outside	O
of	O
the	O
browser	O
as	O
a	O
Gtk+	B-Application
widget	O
(	O
known	O
as	O
Moonlight.Gtk	O
)	O
.	O
</s>
<s>
MoonBase	O
is	O
an	O
experimental	O
set	O
of	O
helper	O
classes	O
built	O
on	O
top	O
of	O
Moonlight.Gtk	O
that	O
can	O
be	O
used	O
to	O
create	O
full	O
blown	O
C#	B-Application
desktop	O
applications	O
using	O
the	O
Moonlight	B-Language
(	O
Silverlight	B-Application
4.0	O
)	O
widgets	O
and	O
XAML	B-Device
files	O
.	O
</s>
<s>
MoonBase	O
also	O
has	O
a	O
related	O
XAML	B-Device
editor/previewer	O
.	O
</s>
<s>
Shortly	O
after	O
the	O
first	O
demo	O
at	O
MIX	O
07	O
in	O
Paris	O
,	O
Microsoft	O
began	O
cooperating	O
with	O
Novell	O
to	O
help	O
with	O
the	O
building	O
of	O
Moonlight	B-Language
.	O
</s>
<s>
Support	O
included	O
giving	O
exclusive	O
access	O
to	O
Novell	O
for	O
the	O
following	O
Silverlight	B-Application
artifacts	O
:	O
</s>
<s>
Microsoft	O
's	O
Test	O
suites	O
for	O
Silverlight	B-Application
,	O
</s>
<s>
Silverlight	B-Application
specification	O
details	O
,	O
beyond	O
those	O
available	O
on	O
the	O
web	O
,	O
</s>
<s>
Proprietary	O
codecs	B-General_Concept
made	O
available	O
free-of-charge	O
for	O
Windows	B-Device
Media	I-Device
Video	I-Device
and	O
Audio	B-Application
,	O
for	O
VC-1	B-Operating_System
and	O
MP3	B-Application
,	O
and	O
in	O
the	O
future	O
H.264	B-Application
and	O
AAC	B-Application
,	O
only	O
licensed	O
for	O
use	O
with	O
Moonlight	B-Language
when	O
running	O
in	O
a	O
web	O
browser	O
.	O
</s>
<s>
Other	O
potential	O
decoders	O
include	O
GStreamer	B-Language
and	O
FFmpeg	B-Library
(	O
used	O
during	O
the	O
development	O
stage	O
)	O
but	O
Novell	O
will	O
not	O
provide	O
prepackaged	O
versions	O
of	O
Moonlight	B-Language
with	O
those	O
libraries	O
,	O
because	O
those	O
decoders	O
have	O
not	O
been	O
granted	O
licensing	O
for	O
the	O
use	O
of	O
patented	O
codec	B-General_Concept
technologies	O
.	O
</s>
<s>
Microsoft	O
released	O
two	O
public	O
covenants	O
not	O
to	O
sue	O
for	O
the	O
infringement	O
of	O
its	O
patents	O
when	O
using	O
Moonlight	B-Language
.	O
</s>
<s>
The	O
first	O
one	O
covered	O
Moonlight	B-Language
1	O
and	O
2	O
,	O
is	O
quite	O
restrictive	O
and	O
covered	O
only	O
the	O
use	O
of	O
Moonlight	B-Language
as	O
a	O
plugin	O
in	O
a	O
browser	O
,	O
only	O
implementations	O
that	O
are	O
not	O
GPLv3	O
licensed	O
,	O
and	O
only	O
if	O
the	O
Moonlight	B-Language
implementation	O
has	O
been	O
obtained	O
from	O
Novell	O
.	O
</s>
<s>
The	O
second	O
covenant	O
was	O
an	O
updated	O
and	O
broader	O
covenant	O
that	O
no	O
longer	O
limits	O
the	O
covenant	O
to	O
users	O
that	O
obtain	O
Moonlight	B-Language
from	O
Novell	O
,	O
it	O
covers	O
any	O
uses	O
of	O
Moonlight	B-Language
regardless	O
of	O
where	O
it	O
was	O
obtained	O
.	O
</s>
<s>
The	O
updated	O
covenant	O
covers	O
the	O
implementations	O
as	O
shipped	O
by	O
Novell	O
for	O
versions	O
3	O
and	O
4	O
,	O
it	O
no	O
longer	O
distinguishes	O
Novell	O
from	O
other	O
distributions	O
of	O
Moonlight	B-Language
and	O
expands	O
the	O
covenant	O
to	O
desktop	O
applications	O
created	O
with	O
Moonlight	B-Language
.	O
</s>
<s>
The	O
covenant	O
does	O
not	O
extend	O
to	O
forks	O
licensed	O
under	O
the	O
GNU	O
GPL	O
(	O
Moonlight	B-Language
itself	O
uses	O
the	O
Lesser	O
GPLv2	O
)	O
.	O
</s>
<s>
Although	O
Moonlight	B-Language
is	O
free	B-Application
software	I-Application
,	O
the	O
final	O
version	O
was	O
going	O
to	O
use	O
binary-only	O
audio	B-Application
and	O
video	O
codecs	B-General_Concept
provided	O
by	O
Microsoft	O
which	O
will	O
be	O
licensed	O
for	O
use	O
with	O
Moonlight	B-Language
only	O
when	O
used	O
as	O
a	O
browser	O
plugin	O
(	O
see	O
above	O
)	O
.	O
</s>
<s>
The	O
Windows	O
media	O
pack	O
is	O
not	O
distributed	O
together	O
with	O
the	O
Moonlight	B-Language
plugin	O
but	O
the	O
first	O
time	O
when	O
media	O
content	O
in	O
Silverlight	B-Application
is	O
detected	O
the	O
user	O
will	O
be	O
prompted	O
to	O
download	O
the	O
pack	O
containing	O
the	O
codecs	B-General_Concept
used	O
in	O
Silverlight	B-Application
directly	O
from	O
Microsoft	O
.	O
</s>
<s>
Self	O
built	O
versions	O
could	O
still	O
use	O
the	O
FFmpeg	B-Library
library	O
and	O
there	O
was	O
discussion	O
about	O
adding	O
GStreamer	B-Language
support	O
as	O
an	O
alternative	O
to	O
using	O
Microsoft	O
's	O
binary	O
codecs	B-General_Concept
for	O
those	O
who	O
wish	O
to	O
use	O
GStreamer	B-Language
instead	O
and	O
also	O
for	O
use	O
when	O
used	O
outside	O
of	O
a	O
browser	O
.	O
</s>
<s>
Mono	B-Application
architect	O
Miguel	O
de	O
Icaza	O
blogged	O
that	O
the	O
Mono	B-Application
team	O
prototyped	O
Moonlight	B-Language
multimedia	O
support	O
using	O
the	O
LGPL-licensed	O
FFmpeg	B-Library
engine	O
but	O
that	O
they	O
were	O
unable	O
to	O
redistribute	O
packaged	O
versions	O
that	O
used	O
that	O
library	O
due	O
to	O
FFmpeg	B-Library
codec	B-General_Concept
licensing	O
issues	O
inside	O
of	O
the	O
United	O
States	O
.	O
</s>
<s>
After	O
the	O
release	O
of	O
Moonlight	B-Language
2	O
,	O
a	O
covenant	O
provided	O
by	O
Microsoft	O
was	O
updated	O
to	O
ensure	O
that	O
other	O
third	O
party	O
distributors	O
can	O
distribute	O
Moonlight	B-Language
without	O
their	O
users	O
having	O
to	O
worry	O
about	O
getting	O
sued	O
over	O
patent	O
infringement	O
by	O
Microsoft	O
.	O
</s>
<s>
The	O
version	O
of	O
Moonlight	B-Language
that	O
was	O
going	O
to	O
be	O
available	O
direct	O
from	O
Novell	O
would	O
have	O
access	O
to	O
licensed	O
closed	O
source	O
media	B-General_Concept
codecs	I-General_Concept
provided	O
free	O
of	O
charge	O
by	O
Microsoft	O
.	O
</s>
<s>
Third-party	O
distributions	O
of	O
Moonlight	B-Language
would	O
only	O
be	O
able	O
to	O
play	O
non-patent	O
encumbered	O
media	O
like	O
Vorbis	B-Algorithm
,	O
Theora	B-Algorithm
and	O
Ogg	O
.	O
</s>
<s>
Negotiate	O
licences	O
directly	O
with	O
individual	O
media	B-General_Concept
codec	I-General_Concept
owners	O
(	O
e.g.	O
</s>
<s>
At	O
the	O
PDC	O
conference	O
on	O
October	O
13	O
,	O
2008	O
,	O
Microsoft	O
placed	O
the	O
'	O
Silverlight	B-Application
XAML	B-Device
Vocabulary	O
 '	O
under	O
the	O
Microsoft	O
Open	O
Specification	O
Promise	O
,	O
stating	O
in	O
a	O
press	O
release	O
,	O
"	O
The	O
Silverlight	B-Application
XAML	B-Device
vocabulary	O
specification	O
,	O
released	O
under	O
the	O
Microsoft	O
Open	O
Specification	O
Promise	O
,	O
will	O
better	O
enable	O
third-party	O
ISVs	O
to	O
create	O
products	O
that	O
can	O
read	O
and	O
write	O
XAML	B-Device
for	O
Silverlight.	O
"	O
</s>
<s>
Since	O
Moonlight	B-Language
is	O
essentially	O
a	O
XAML	B-Device
reader	O
,	O
Debian	O
's	O
position	O
is	O
that	O
Moonlight	B-Language
is	O
safe	O
for	O
them	O
to	O
redistribute	O
(	O
leaving	O
each	O
user	O
to	O
agree	O
to	O
their	O
own	O
licensing	O
for	O
Microsoft	O
's	O
and	O
others	O
 '	O
binary	O
codecs	B-General_Concept
)	O
.	O
</s>
