<s>
Apache	B-Application
Celix	I-Application
is	O
an	O
open-source	B-Application
implementation	O
of	O
the	O
OSGi	B-Application
specification	O
adapted	O
to	O
C	B-Language
and	O
C++	B-Language
developed	O
by	O
the	O
Apache	O
Software	O
Foundation	O
.	O
</s>
<s>
The	O
project	O
aims	O
to	O
provide	O
a	O
framework	O
to	O
develop	O
(	O
dynamic	O
)	O
modular	O
software	O
applications	O
using	O
component	O
and/or	O
service-oriented	B-Application
programming	I-Application
.	O
</s>
<s>
Apache	B-Application
Celix	I-Application
is	O
primarily	O
developed	O
in	O
C	B-Language
and	O
adds	O
an	O
additional	O
abstraction	O
,	O
in	O
the	O
form	O
of	O
a	O
library	O
,	O
to	O
support	O
for	O
C++	B-Language
.	O
</s>
<s>
Modularity	O
in	O
Apache	B-Application
Celix	I-Application
is	O
achieved	O
by	O
supporting	O
-	O
run-time	O
installed	O
-	O
bundles	O
.	O
</s>
<s>
Services	O
in	O
Apache	B-Application
Celix	I-Application
are	O
"	O
plain	O
old	O
"	O
structs	O
with	O
function	O
pointers	O
or	O
"	O
plain	O
old	O
C++	B-Language
Objects	O
"	O
(	O
POCO	O
)	O
.	O
</s>
<s>
Apache	B-Application
Celix	I-Application
was	O
welcomed	O
in	O
the	O
Apache	B-Application
Incubator	I-Application
at	O
November	O
2010	O
and	O
graduated	O
to	O
Top	O
Level	O
Project	O
from	O
the	O
Apache	B-Application
Incubator	I-Application
in	O
July	O
2014	O
.	O
</s>
