<s>
This	O
comparison	O
only	O
covers	O
software	B-License
licenses	I-License
which	O
have	O
a	O
linked	O
Wikipedia	O
article	O
for	O
details	O
and	O
which	O
are	O
approved	O
by	O
at	O
least	O
one	O
of	O
the	O
following	O
expert	O
groups	O
:	O
the	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
,	O
the	O
Open	O
Source	O
Initiative	O
,	O
the	O
Debian	O
Project	O
and	O
the	O
Fedora	O
Project	O
.	O
</s>
<s>
FOSS	B-License
stands	O
for	O
"	O
Free	B-Application
and	I-Application
Open	I-Application
Source	I-Application
Software	I-Application
"	O
.	O
</s>
<s>
There	O
is	O
no	O
one	O
universally	O
agreed-upon	O
definition	O
of	O
FOSS	B-License
software	O
and	O
various	O
groups	O
maintain	O
approved	O
lists	O
of	O
licenses	O
.	O
</s>
<s>
The	O
Open	O
Source	O
Initiative	O
(	O
OSI	O
)	O
is	O
one	O
such	O
organization	O
keeping	O
a	O
list	O
of	O
open-source	B-Application
licenses	O
.	O
</s>
<s>
The	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
(	O
FSF	B-Operating_System
)	O
maintains	O
a	O
list	O
of	O
what	O
it	O
considers	O
free	O
.	O
</s>
<s>
FSF	B-Operating_System
's	O
free	B-Application
software	I-Application
and	O
OSI	O
's	O
open-source	B-Application
licenses	O
together	O
are	O
called	O
FOSS	B-License
licenses	O
.	O
</s>
<s>
There	O
are	O
licenses	O
accepted	O
by	O
the	O
OSI	O
which	O
are	O
not	O
free	O
as	O
per	O
the	B-Application
Free	I-Application
Software	I-Application
Definition	I-Application
.	O
</s>
<s>
The	B-License
Open	I-License
Source	I-License
Definition	I-License
allows	O
for	O
further	O
restrictions	O
like	O
price	O
,	O
type	O
of	O
contribution	O
and	O
origin	O
of	O
the	O
contribution	O
,	O
e.g.	O
</s>
<s>
the	O
case	O
of	O
the	O
NASA	B-License
Open	I-License
Source	I-License
Agreement	I-License
,	O
which	O
requires	O
the	O
code	O
to	O
be	O
"	O
original	O
"	O
work	O
.	O
</s>
<s>
The	O
OSI	O
does	O
not	O
endorse	O
FSF	B-Operating_System
license	O
analysis	O
(	O
interpretation	O
)	O
as	O
per	O
their	O
disclaimer	O
.	O
</s>
<s>
The	O
FSF	B-Operating_System
's	O
Free	B-Application
Software	I-Application
Definition	I-Application
focuses	O
on	O
the	O
user	O
's	O
unrestricted	O
rights	O
to	O
use	O
a	O
program	O
,	O
to	O
study	O
and	O
modify	O
it	O
,	O
to	O
copy	O
it	O
,	O
and	O
redistribute	O
it	O
for	O
any	O
purpose	O
,	O
which	O
are	O
considered	O
by	O
the	O
FSF	B-Operating_System
the	O
four	O
essential	O
freedoms	O
.	O
</s>
<s>
The	O
OSI	O
's	O
open-source	B-Application
criteria	O
focuses	O
on	O
the	O
availability	O
of	O
the	O
source	O
code	O
and	O
the	O
advantages	O
of	O
an	O
unrestricted	O
and	O
community	O
driven	O
development	O
model	O
.	O
</s>
<s>
Yet	O
,	O
many	O
FOSS	B-License
licenses	O
,	O
like	O
the	O
Apache	B-Application
License	I-Application
,	O
and	O
all	O
Free	B-License
Software	I-License
licenses	I-License
allow	O
commercial	O
use	O
of	O
FOSS	B-License
components	O
.	O
</s>
<s>
For	O
a	O
simpler	O
comparison	O
across	O
the	O
most	O
common	O
licenses	O
see	O
free-software	B-License
license	I-License
comparison	O
.	O
</s>
<s>
In	O
this	O
table	O
,	O
"	O
permissive	B-License
"	O
means	O
the	O
software	O
has	O
minimal	O
restrictions	O
on	O
how	O
it	O
can	O
be	O
used	O
,	O
modified	O
,	O
and	O
redistributed	O
,	O
usually	O
including	O
a	O
warranty	O
disclaimer	O
.	O
</s>
<s>
"	O
Copyleft	B-License
"	O
means	O
the	O
software	O
requires	O
that	O
its	O
source	O
code	O
be	O
made	O
publicly	O
available	O
and	O
that	O
all	O
provisions	O
in	O
the	O
license	O
be	O
preserved	O
in	O
derivative	O
works	O
.	O
</s>
<s>
This	O
table	O
lists	O
for	O
each	O
license	O
what	O
organizations	O
from	O
the	O
FOSS	B-License
community	O
have	O
approved	O
itbe	O
it	O
as	O
a	O
"	O
free	B-Application
software	I-Application
"	O
or	O
as	O
an	O
"	O
open	O
source	O
"	O
license	O
,	O
how	O
those	O
organizations	O
categorize	O
it	O
,	O
and	O
the	O
license	O
compatibility	O
between	O
them	O
for	O
a	O
combined	O
or	O
mixed	O
derivative	O
work	O
.	O
</s>
<s>
Organizations	O
usually	O
approve	O
specific	O
versions	O
of	O
software	B-License
licenses	I-License
.	O
</s>
<s>
For	O
instance	O
,	O
a	O
FSF	B-Operating_System
approval	O
means	O
that	O
the	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
(	O
FSF	B-Operating_System
)	O
considers	O
a	O
license	O
to	O
be	O
free-software	B-License
license	I-License
.	O
</s>
<s>
The	O
FSF	B-Operating_System
recommends	O
at	O
least	O
"	O
Compatible	O
with	O
GPL	B-License
"	O
and	O
preferably	O
copyleft	B-License
.	O
</s>
<s>
The	O
OSI	O
recommends	O
a	O
mix	O
of	O
permissive	B-License
and	I-License
copyleft	I-License
licenses	I-License
,	O
the	O
Apache	B-Application
License	I-Application
2.0	I-Application
,	O
2	O
-	O
&	O
3-clause	O
BSD	B-Operating_System
license	I-Operating_System
,	O
GPL	B-License
,	O
LGPL	B-Application
,	O
MIT	B-License
license	I-License
,	O
MPL	B-License
2.0	I-License
,	O
CDDL	B-Application
and	O
EPL	B-License
.	O
</s>
<s>
License	O
and	O
versionFSF	O
approvalGPL	O
(	O
v3	O
)	O
compatibilityOSI	O
approvalDebian	O
approvalFedora	O
approvalAcademic	O
Free	O
License	O
Affero	O
General	B-License
Public	I-License
License	I-License
3.0	O
Apache	B-Application
License	I-Application
1.x	O
Apache	B-Application
License	I-Application
2.0	I-Application
Apple	B-License
Public	I-License
Source	I-License
License	I-License
1.x	O
Apple	B-License
Public	I-License
Source	I-License
License	I-License
2.0	O
Artistic	B-License
License	I-License
1.0	O
The	O
original	O
version	O
of	O
the	O
Artistic	B-License
License	I-License
is	O
defined	O
as	O
non-free	O
because	O
it	O
is	O
overly	O
vague	O
,	O
not	O
because	O
of	O
the	O
substance	O
of	O
the	O
license	O
.	O
</s>
<s>
The	O
FSF	B-Operating_System
encourages	O
projects	O
to	O
use	O
the	O
Clarified	B-License
Artistic	I-License
License	I-License
instead	O
.	O
</s>
<s>
Artistic	B-License
License	I-License
2.0	I-License
Beerware	B-License
License	I-License
Original	O
BSD	B-Operating_System
license	I-Operating_System
Revised	O
BSD	B-Operating_System
license	I-Operating_System
Simplified	O
BSD	B-Operating_System
license	I-Operating_System
Zero-Clause	O
BSD	B-Operating_System
License	I-Operating_System
Boost	O
Software	B-License
License	I-License
CeCILL	B-License
Common	B-Application
Development	I-Application
and	I-Application
Distribution	I-Application
License	I-Application
Are	O
GPLv2	O
and	O
CDDL	B-Application
incompatible	O
?	O
</s>
<s>
Bottomley	O
"	O
What	O
the	O
above	O
analysis	O
shows	O
is	O
that	O
even	O
though	O
we	O
presumed	O
combination	O
of	O
GPLv2	O
and	O
CDDL	B-Application
works	O
to	O
be	O
a	O
technical	O
violation	O
,	O
there	O
's	O
no	O
way	O
actually	O
to	O
prosecute	O
such	O
a	O
violation	O
because	O
we	O
ca	O
n’t	O
develop	O
a	O
convincing	O
theory	O
of	O
harm	O
resulting	O
.	O
</s>
<s>
Because	O
this	O
makes	O
it	O
impossible	O
to	O
take	O
the	O
case	O
to	O
court	O
,	O
effectively	O
it	O
must	O
be	O
concluded	O
that	O
the	O
combination	O
of	O
GPLv2	O
and	O
CDDL	B-Application
,	O
provided	O
you	O
’re	O
following	O
a	O
GPLv2	O
compliance	O
regime	O
for	O
all	O
the	O
code	O
,	O
is	O
allowable.	O
"	O
</s>
<s>
(	O
23	O
February	O
2016	O
)	O
GPL	B-License
Violations	O
Related	O
to	O
Combining	O
ZFS	O
and	O
Linux	O
on	O
sfconservancy.org	O
by	O
Bradley	O
M	O
.	O
Kuhn	O
and	O
Karen	O
M	O
.	O
Sandler	O
(	O
February	O
25	O
,	O
2016	O
)	O
Common	O
Public	O
License	O
Creative	O
Commons	O
Zero	O
Creative	O
Commons	O
BY-SA	O
4.0	O
Cryptix	B-License
General	I-License
License	I-License
Eclipse	B-License
Public	I-License
License	I-License
Educational	B-License
Community	I-License
License	I-License
Eiffel	B-License
Forum	I-License
License	I-License
2	O
European	O
Union	O
Public	O
Licence	O
GNU	B-Application
Affero	I-Application
General	I-Application
Public	I-Application
License	I-Application
https://www.gnu.org/licenses/	O
:	O
"	O
We	O
use	O
only	O
licenses	O
that	O
are	O
compatible	O
with	O
the	O
GNU	B-License
GPL	I-License
for	O
GNU	O
software.	O
"	O
</s>
<s>
GNU	B-License
General	I-License
Public	I-License
License	I-License
v2	O
But	O
can	O
be	O
made	O
compatible	O
by	O
upgrading	O
to	O
GPLv3	O
via	O
the	O
optional	O
"	O
or	O
later	O
"	O
clause	O
added	O
in	O
most	O
GPLv2	O
license	O
texts	O
.	O
</s>
<s>
GNU	B-License
General	I-License
Public	I-License
License	I-License
v3	O
But	O
not	O
with	O
GPLv2	O
without	O
"	O
or	O
later	O
"	O
clause	O
.	O
</s>
<s>
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
GNU	B-Application
Free	I-Application
Documentation	I-Application
License	I-Application
IBM	B-License
Public	I-License
License	I-License
Intel	B-License
Open	I-License
Source	I-License
License	I-License
ISC	B-License
license	I-License
LaTeX	B-Application
Project	I-Application
Public	I-Application
License	I-Application
Microsoft	B-License
Public	I-License
License	I-License
Microsoft	B-License
Reciprocal	I-License
License	I-License
MIT	B-License
license	I-License
/	I-License
X11	I-License
license	I-License
Mozilla	B-License
Public	I-License
License	I-License
1.1	O
Mozilla	B-License
Public	I-License
License	I-License
2.0	I-License
MPL	B-License
2.0	I-License
is	O
GPL	B-License
compatible	O
unless	O
marked	O
"	O
Incompatible	O
with	O
Secondary	O
Licenses	O
"	O
.	O
</s>
<s>
NASA	B-License
Open	I-License
Source	I-License
Agreement	I-License
Netscape	B-Application
Public	I-Application
License	I-Application
Open	B-License
Software	I-License
License	I-License
OpenSSL	B-License
license	I-License
PHP	B-Language
License	I-Language
Python	B-License
Software	I-License
Foundation	I-License
License	I-License
2.0.1	O
;	O
2.1.1	O
and	O
newer	O
Q	B-Language
Public	I-Language
License	I-Language
Reciprocal	B-License
Public	I-License
License	I-License
1.5	O
Sleepycat	B-License
License	I-License
Sun	B-License
Industry	I-License
Standards	I-License
Source	I-License
License	I-License
Sun	B-License
Public	I-License
License	I-License
Sybase	O
Open	O
Watcom	O
Public	O
License	O
Unlicense	B-License
W3C	B-License
Software	I-License
Notice	I-License
and	I-License
License	I-License
Do	B-License
What	I-License
The	I-License
Fuck	I-License
You	I-License
Want	I-License
To	I-License
Public	I-License
License	I-License
(	O
WTFPL	B-License
)	O
Listed	O
as	O
WTFPL	B-License
.	O
</s>
