<s>
opkg	B-Application
(	O
open	O
package	B-Application
management	I-Application
)	O
is	O
a	O
lightweight	O
package	B-Application
management	I-Application
system	I-Application
based	O
upon	O
ipkg	B-Application
.	O
</s>
<s>
It	O
is	O
written	O
in	O
C	B-Language
and	O
resembles	O
Advanced	B-Application
Package	I-Application
Tool	I-Application
(	O
APT	B-Application
)	O
/dpkg	O
in	O
operation	O
.	O
</s>
<s>
It	O
is	O
intended	O
for	O
use	O
on	O
embedded	B-Application
Linux	I-Application
devices	O
and	O
is	O
used	O
in	O
this	O
capacity	O
in	O
the	O
OpenEmbedded	B-Application
and	O
OpenWrt	B-Application
projects	O
.	O
</s>
<s>
Opkg	B-Application
was	O
originally	O
forked	O
from	O
ipkg	B-Application
by	O
the	O
Openmoko	B-Application
project	O
.	O
</s>
<s>
More	O
recently	O
,	O
development	O
of	O
opkg	B-Application
has	O
moved	O
from	O
its	O
old	O
Google	B-Protocol
Code	I-Protocol
repository	O
to	O
Yocto	B-Application
Project	I-Application
where	O
it	O
is	O
actively	O
maintained	O
again	O
.	O
</s>
<s>
Opkg	B-Application
packages	O
usually	O
use	O
either	O
.ipk	O
or	O
.opk	O
extension	O
.	O
</s>
