<s>
Cartes	B-Application
du	I-Application
Ciel	I-Application
(	O
"	O
CDC	O
"	O
and	O
"	O
SkyChart	O
"	O
)	O
is	O
a	O
free	B-License
and	I-License
open	I-License
source	I-License
planetarium	B-Application
program	I-Application
for	O
Linux	B-Application
,	O
macOS	B-Application
,	O
and	O
Windows	B-Application
.	O
</s>
<s>
With	O
the	O
change	O
to	O
version	O
3	O
,	O
Linux	B-Application
has	O
been	O
added	O
as	O
a	O
target	O
platform	O
,	O
licensing	B-License
has	O
changed	O
from	O
freeware	B-License
to	O
GPLv2	B-License
and	O
the	O
project	O
moved	O
to	O
a	O
new	O
website	O
.	O
</s>
<s>
CDC	O
includes	O
the	O
ability	O
to	O
control	O
computerized	O
GoTo	B-Application
telescope	I-Application
mounts	I-Application
,	O
is	O
ASCOM	B-Application
and	O
INDI	B-Application
compliant	O
,	O
and	O
supports	O
the	O
USNO	O
's	O
UCAC	O
catalogs	O
and	O
ESA	O
Gaia	O
data	O
,	O
along	O
with	O
numerous	O
other	O
catalogs	O
and	O
utilities	O
.	O
</s>
<s>
According	O
to	O
the	O
programmer	O
,	O
Patrick	O
Chevalley	O
,	O
it	O
was	O
released	O
as	O
freeware	B-License
because	O
"	O
I	O
’d	O
rather	O
see	O
amateurs	O
spend	O
their	O
money	O
for	O
a	O
new	O
eyepiece	O
than	O
for	O
astronomy	O
software	O
"	O
.	O
</s>
<s>
Chevalley	O
has	O
also	O
created	O
a	O
lunar	O
atlas	O
program	O
,	O
Virtual	O
Moon	O
Atlas	O
,	O
which	O
is	O
also	O
free	B-Application
and	I-Application
open	I-Application
source	I-Application
software	I-Application
.	O
</s>
