<s>
This	O
is	O
a	O
list	O
of	O
notable	O
library	B-Library
packages	O
implementing	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
platform-independent	B-Operating_System
GUI	I-Operating_System
library	I-Operating_System
(	O
PIGUI	B-Operating_System
)	O
.	O
</s>
<s>
These	O
can	O
be	O
used	O
to	O
develop	O
software	O
that	O
can	O
be	O
ported	O
to	O
multiple	O
computing	B-Device
platforms	I-Device
with	O
no	O
change	O
to	O
its	O
source	O
code	O
.	O
</s>
<s>
Name	O
Owner	O
Platforms	B-Device
License	B-License
Chromium	B-Language
Embedded	I-Language
Framework	I-Language
(	O
CEF	O
)	O
CEF	O
Project	O
Page	O
Linux	B-Application
,	O
macOS	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
:	O
BSD	B-Operating_System
CEGUI	B-Language
CEGUI	B-Language
team	O
Linux	B-Application
,	O
macOS	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
:	O
MIT	B-License
Enlightenment	B-Library
Foundation	I-Library
Libraries	I-Library
(	O
EFL	O
)	O
Enlightenment.org	O
X11	B-Operating_System
,	O
Wayland	B-Language
,	O
Microsoft	B-Application
Windows	I-Application
,	O
macOS	B-Application
,	O
DirectFB	B-Application
,	O
Tizen	B-Application
:	O
BSD	B-Operating_System
,	O
LGPL	B-Application
,	O
GPL	B-License
Fast	B-Language
Light	I-Language
Toolkit	I-Language
(	O
FLTK	B-Language
)	O
Bill	O
Spitzak	O
,	O
et	O
al	O
.	O
</s>
<s>
Name	O
Owner	O
Comment	O
VisualAge	B-Language
IBM	O
Discontinued	O
by	O
IBM	O
in	O
2007	O
.	O
</s>
