<s>
Gecode	B-Application
(	O
for	O
Generic	O
Constraint	O
Development	O
Environment	O
)	O
is	O
a	O
software	B-Library
library	I-Library
for	O
solving	B-Application
Constraint	B-Application
satisfaction	I-Application
problems	I-Application
.	O
</s>
<s>
It	O
is	O
programmed	O
in	O
C++	B-Language
and	O
distributed	O
as	O
free	B-Application
software	I-Application
under	O
the	O
permissive	O
MIT	B-License
license	I-License
.	O
</s>
<s>
Gecode	B-Application
has	O
bindings	O
for	O
several	O
programming	O
languages	O
such	O
as	O
Prolog	B-Language
,	O
Python	B-Language
and	O
Ruby	B-Language
,	O
and	O
an	O
interface	O
to	O
the	O
AMPL	B-Language
modeling	O
language	O
.	O
</s>
<s>
The	O
first	O
release	O
of	O
Gecode	B-Application
was	O
in	O
December	O
2005	O
.	O
</s>
<s>
Since	O
then	O
,	O
Gecode	B-Application
has	O
rapidly	O
become	O
one	O
of	O
the	O
most	O
prominent	O
constraint	B-Application
programming	I-Application
systems	O
.	O
</s>
<s>
Gecode	B-Application
has	O
been	O
ported	O
to	O
several	O
language	O
,	O
for	O
instance	O
,	O
Gelisp	O
is	O
a	O
wrapper	O
of	O
Gecode	B-Application
for	O
Lisp	O
.	O
</s>
