<s>
Capability-based	O
Reliable	O
Operating	B-General_Concept
System	I-General_Concept
(	O
CapROS	B-Application
)	O
is	O
an	O
operating	B-General_Concept
system	I-General_Concept
incorporating	O
pure	O
capability-based	O
security	O
.	O
</s>
<s>
It	O
is	O
free	B-License
and	I-License
open-source	I-License
software	I-License
released	O
under	O
the	O
GNU	O
General	O
Public	O
License	O
version	O
2	O
(	O
GPLv2	O
)	O
,	O
and	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
version	O
2	O
(	O
LGPLv2	B-Application
)	O
.	O
</s>
<s>
CapROS	B-Application
is	O
an	O
evolution	O
of	O
the	O
Extremely	B-Operating_System
Reliable	I-Operating_System
Operating	I-Operating_System
System	I-Operating_System
(	O
EROS	B-Operating_System
)	O
.	O
</s>
<s>
While	O
EROS	B-Operating_System
was	O
purely	O
a	O
research	O
system	O
,	O
CapROS	B-Application
is	O
intended	O
to	O
be	O
a	O
stable	O
system	O
of	O
commercial	O
quality	O
.	O
</s>
<s>
CapROS	B-Application
currently	O
runs	O
on	O
Intel	B-Device
IA-32	I-Device
and	O
ARM	B-Architecture
microprocessors	I-Architecture
.	O
</s>
<s>
CapROS	B-Application
is	O
being	O
developed	O
by	O
Strawberry	O
Development	O
Group	O
with	O
funding	O
from	O
the	O
Defense	O
Advanced	O
Research	O
Projects	O
Agency	O
(	O
DARPA	O
)	O
and	O
others	O
.	O
</s>
<s>
The	O
CapROS	B-Application
project	O
was	O
formed	O
in	O
2005	O
as	O
a	O
non-academic	O
continuation	O
of	O
EROS	B-Operating_System
.	O
</s>
<s>
The	O
EROS	B-Operating_System
system	O
in	O
turn	O
traces	O
its	O
architecture	O
to	O
KeyKOS	B-Operating_System
and	O
ultimately	O
GNOSIS	B-Operating_System
.	O
</s>
