<s>
Ultimate++	B-Language
,	O
also	O
known	O
as	O
U++	O
or	O
Upp	O
-	O
is	O
a	O
C++	B-Language
rapid	O
application	B-Application
development	I-Application
framework	I-Application
which	O
aims	O
to	O
reduce	O
the	O
code	O
complexity	O
of	O
typical	O
desktop	O
applications	O
by	O
extensively	O
exploiting	O
C++	B-Language
features	O
.	O
</s>
<s>
It	O
possesses	O
its	O
own	O
integrated	B-Application
development	I-Application
environment	I-Application
called	O
TheIDE	O
that	O
is	O
designed	O
to	O
handle	O
all	O
library	O
features	O
.	O
</s>
<s>
The	O
major	O
Ultimate++	B-Language
features	O
are	O
:	O
</s>
<s>
Supports	O
Unix/Linux/FreeBSD	O
(	O
X11	B-Operating_System
)	O
,	O
Microsoft	B-Application
Windows	I-Application
and	O
macOS	B-Application
.	O
</s>
<s>
Includes	O
an	O
IDE	B-Application
and	O
a	O
GUI	B-Application
designer	O
.	O
</s>
<s>
Can	O
emulate	O
native	O
widgets	O
look	B-Application
and	I-Application
feel	I-Application
.	O
</s>
<s>
On	O
X11	B-Operating_System
systems	O
,	O
Ultimate++	B-Language
supports	O
GTK+	B-Application
widgets	O
look	B-Application
and	I-Application
feel	I-Application
.	O
</s>
<s>
Standard	O
distribution	O
comes	O
with	O
Ultimate++	B-Language
sources	O
included	O
,	O
even	O
the	O
IDE	B-Application
ones	O
.	O
</s>
<s>
Uses	O
as	O
template	O
system	O
instead	O
of	O
STL	B-Application
.	O
</s>
<s>
The	O
following	O
example	O
creates	O
a	O
C++	B-Language
application	O
with	O
"	O
Hello	O
world	O
!	O
"	O
</s>
<s>
Example	O
applications	O
using	O
Ultimate++	B-Language
are	O
:	O
</s>
