<s>
Open	O
Source	O
Question	O
and	O
Answer	O
,	O
or	O
OSQA	B-Application
,	O
was	O
an	O
open	O
source	O
question-answer	O
system	O
written	O
in	O
Python	B-Language
with	O
Django	B-Language
.	O
</s>
<s>
The	O
data	O
layer	O
relies	O
on	O
MySQL	B-Application
,	O
PostgreSQL	B-Application
,	O
Microsoft	B-Application
SQL	I-Application
Server	I-Application
or	O
SQLite	B-Language
.	O
</s>
<s>
OSQA	B-Application
is	O
free	B-Application
software	I-Application
released	O
under	O
the	O
GNU	B-License
GPL	I-License
v3+	O
.	O
</s>
