<s>
Slugs	B-Device
is	O
an	O
open-source	B-Application
autopilot	O
system	O
oriented	O
toward	O
inexpensive	O
autonomous	O
aircraft	O
.	O
</s>
<s>
Several	O
vendors	O
produce	O
Slugs	B-Device
autopilots	O
and	O
accessories	O
.	O
</s>
<s>
All	O
hardware	O
and	O
software	O
is	O
open-source	B-Application
and	O
freely	O
available	O
to	O
anyone	O
under	O
the	O
MIT	B-License
licensing	O
agreement	O
.	O
</s>
<s>
free	B-Application
software	I-Application
autopilots	O
provide	O
more	O
flexible	O
hardware	O
and	O
software	O
.	O
</s>
<s>
The	O
free	B-Application
software	I-Application
approach	O
from	O
Slugs	B-Device
is	O
similar	O
to	O
that	O
from	O
the	O
paparazzi	B-Device
Project	I-Device
,	O
PX4	B-Application
autopilot	I-Application
,	O
ArduPilot	O
and	O
OpenPilot	B-Application
where	O
low	O
cost	O
and	O
availability	O
enables	O
its	O
hobbyist	O
use	O
in	O
small	O
remotely	O
piloted	O
aircraft	O
such	O
as	O
micro	O
air	O
vehicles	O
and	O
miniature	O
UAVs	O
.	O
</s>
<s>
Such	O
frameworks	O
are	O
common	O
in	O
Open-source	B-Application
robotics	I-Application
.	O
</s>
<s>
The	O
open-source	B-Application
software	I-Application
suite	O
contains	O
everything	O
to	O
let	O
airborne	O
systems	O
fly	O
.	O
</s>
