<s>
The	O
Artistic	B-License
License	I-License
is	O
an	O
open-source	O
license	O
used	O
for	O
certain	O
free	B-License
and	I-License
open-source	I-License
software	I-License
packages	O
,	O
most	O
notably	O
the	O
standard	O
implementation	O
of	O
the	O
Perl	B-Language
programming	I-Language
language	I-Language
and	O
most	O
CPAN	B-Language
modules	O
,	O
which	O
are	O
dual-licensed	B-License
under	O
the	O
Artistic	B-License
License	I-License
and	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
.	O
</s>
<s>
The	O
original	O
Artistic	B-License
License	I-License
was	O
written	O
by	O
Larry	O
Wall	O
.	O
</s>
<s>
The	O
name	O
of	O
the	O
license	O
is	O
a	O
reference	O
to	O
the	O
concept	O
of	O
artistic	B-License
license	I-License
.	O
</s>
<s>
Whether	O
or	O
not	O
the	O
original	O
Artistic	B-License
License	I-License
is	O
a	O
free	B-License
software	I-License
license	I-License
is	O
largely	O
unsettled	O
.	O
</s>
<s>
The	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
explicitly	O
called	O
the	O
original	O
Artistic	B-License
License	I-License
a	O
non-free	O
license	O
,	O
criticizing	O
it	O
as	O
being	O
"	O
too	O
vague	O
;	O
some	O
passages	O
are	O
too	O
clever	O
for	O
their	O
own	O
good	O
,	O
and	O
their	O
meaning	O
is	O
not	O
clear	O
"	O
.	O
</s>
<s>
The	O
FSF	O
recommended	O
that	O
the	O
license	O
not	O
be	O
used	O
on	O
its	O
own	O
,	O
but	O
approved	O
the	O
common	O
AL/GPL	O
dual-licensing	B-License
approach	O
for	O
Perl	B-Language
projects	O
.	O
</s>
<s>
In	O
response	O
to	O
this	O
,	O
Bradley	O
Kuhn	O
,	O
who	O
later	O
worked	O
for	O
the	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
,	O
made	O
a	O
minimal	O
redraft	O
to	O
clarify	O
the	O
ambiguous	O
passages	O
.	O
</s>
<s>
This	O
was	O
released	O
as	O
the	O
Clarified	B-License
Artistic	I-License
License	I-License
and	O
was	O
approved	O
by	O
the	O
FSF	O
.	O
</s>
<s>
It	O
is	O
used	O
by	O
the	O
Paros	O
Proxy	O
,	O
the	O
JavaFBP	B-Application
toolkit	I-Application
and	O
NcFTP	B-Protocol
.	O
</s>
<s>
The	O
terms	O
of	O
the	O
Artistic	B-License
License	I-License
1.0	O
were	O
at	O
issue	O
in	O
Jacobsen	O
v	O
.	O
Katzer	O
in	O
the	O
initial	O
2009	O
ruling	O
by	O
the	O
United	O
States	O
District	O
Court	O
for	O
the	O
Northern	O
District	O
of	O
California	O
declared	O
that	O
FOSS-like	O
licenses	O
could	O
only	O
be	O
enforced	O
through	O
contract	O
law	O
rather	O
than	O
through	O
copyright	O
law	O
,	O
in	O
contexts	O
where	O
contract	O
damages	O
would	O
be	O
difficult	O
to	O
establish	O
.	O
</s>
<s>
On	O
appeal	O
,	O
a	O
federal	O
appellate	O
court	O
"	O
determined	O
that	O
the	O
terms	O
of	O
the	O
Artistic	B-License
License	I-License
are	O
enforceable	O
copyright	O
conditions	O
"	O
.	O
</s>
<s>
However	O
,	O
this	O
left	O
undisturbed	O
the	O
finding	O
that	O
a	O
free	B-License
and	I-License
open-source	I-License
license	O
nonetheless	O
has	O
economic	O
value	O
.	O
</s>
<s>
Jacobsen	O
ultimately	O
prevailed	O
in	O
2010	O
,	O
and	O
the	O
Case	O
established	O
a	O
new	O
standard	O
making	O
terms	O
and	O
conditions	O
under	O
Artistic	B-License
License	I-License
1.0	O
enforceable	O
through	O
copyright	O
statutes	O
and	O
relevant	O
precedents	O
.	O
</s>
<s>
In	O
response	O
to	O
the	O
Request	O
for	O
Comments	O
(	O
RFC	O
)	O
process	O
for	O
improving	O
the	O
licensing	O
position	O
for	O
Perl	B-Application
6	I-Application
,	O
Kuhn	O
's	O
draft	O
was	O
extensively	O
rewritten	O
by	O
Roberta	O
Cairney	O
and	O
Allison	O
Randal	O
for	O
readability	O
and	O
legal	O
clarity	O
,	O
with	O
input	O
from	O
the	O
Perl	B-Language
community	O
.	O
</s>
<s>
This	O
resulted	O
in	O
the	O
Artistic	B-License
License	I-License
2.0	I-License
,	O
which	O
has	O
been	O
approved	O
as	O
both	O
a	O
free	B-Application
software	I-Application
and	O
open	O
source	O
license	O
.	O
</s>
<s>
The	O
Artistic	B-License
license	I-License
2.0	I-License
is	O
also	O
notable	O
for	O
its	O
excellent	O
license	O
compatibility	O
with	O
other	O
FOSS	B-License
licenses	O
due	O
to	O
a	O
relicensing	O
clause	O
,	O
a	O
property	O
other	O
licenses	O
like	O
the	O
GPL	B-License
lack	O
.	O
</s>
<s>
It	O
has	O
been	O
adopted	O
by	O
some	O
of	O
the	O
Perl	B-Application
6	I-Application
implementations	I-Application
,	O
the	O
Mojolicious	B-Language
framework	O
,	O
NPM	B-Language
,	O
and	O
has	O
been	O
used	O
by	O
the	O
Parrot	B-Language
virtual	I-Language
machine	I-Language
since	O
version	O
0.4.13	O
.	O
</s>
<s>
It	O
is	O
also	O
used	O
by	O
the	O
SNEeSe	O
emulator	B-Application
,	O
which	O
was	O
formerly	O
licensed	O
under	O
the	O
Clarified	B-License
Artistic	I-License
License	I-License
.	O
</s>
<s>
The	O
OSI	O
recommends	O
that	O
all	O
developers	O
and	O
projects	O
licensing	O
their	O
products	O
with	O
the	O
Artistic	B-License
License	I-License
adopt	O
Artistic	B-License
License	I-License
2.0	I-License
.	O
</s>
