<s>
This	O
is	O
a	O
comparison	B-Application
of	I-Application
widget	I-Application
engines	I-Application
.	O
</s>
<s>
This	O
article	O
is	O
not	O
about	O
widget	B-Library
toolkits	I-Library
that	O
are	O
used	O
in	O
computer	B-General_Concept
programming	I-General_Concept
to	O
build	O
graphical	B-Application
user	I-Application
interfaces	I-Application
.	O
</s>
<s>
Engine	O
Creator	O
Current	O
Version	O
License	B-License
Status	O
Adobe	B-Operating_System
AIR	I-Operating_System
Adobe	O
Systems	O
1.5	O
Proprietary	B-Application
Discontinued	O
AveDesk	B-Application
Andreas	O
Verhoeven	O
1.3	O
Proprietary	B-Application
Abandoned	O
Dashboard	B-Application
Apple	O
Inc	O
.	O
</s>
<s>
Proprietary	B-Application
Retired	O
DesktopX	B-Application
Stardock	O
3.5	O
Proprietary	B-Application
Abandoned	O
gDesklets	B-Application
Martin	O
Grimme	O
and	O
Christian	O
Meyer	O
0.36	O
GPL	O
Abandoned	O
Google	B-Application
Desktop	B-Application
Gadgets	I-Application
Google	B-Application
5.0.0701.18382	O
Proprietary	B-Application
Discontinued	O
Kapsules	B-Application
Andrew	O
Powell	O
0.9.9	O
Proprietary	B-Application
Abandoned	O
KlipFolio	O
Serence	O
5.0D	O
Proprietary	B-Application
Active	O
and	O
supported	O
Microsoft	B-Application
Gadgets	I-Application
Microsoft	O
Proprietary	B-Application
Discontinued	O
NetFront	B-Operating_System
Access	O
Co	O
.	O
Ltd	O
.	O
4.2	O
Proprietary	B-Application
Discontinued	O
Netvibes	O
Netvibes	O
1.0	O
Proprietary	B-Application
Active	O
and	O
supported	O
Opera	B-Application
Opera	B-Application
Software	O
Proprietary	B-Application
Discontinued	O
Plasma	B-Language
KDE	O
(	O
Aaron	O
Seigo	O
,	O
main	O
developer	O
)	O
GPL	O
Active	O
and	O
Supported	O
Rainmeter	B-Application
Kimmo	O
'	O
Rainy	O
 '	O
Pekkola	O
GPL	O
Active	O
and	O
Supported	O
Screenlets	B-Application
Rico	O
Pfaus	O
(	O
AKA	O
RYX	O
)	O
0.1.5	O
GPL	O
Abandoned	O
Serious	B-Application
Samurize	I-Application
Gustaf	O
&	O
Oscar	O
Lundh	O
1.64	O
Proprietary	B-Application
Abandoned	O
SuperKaramba	B-Language
Hans	O
Karlsson	O
0.39	O
GPL	O
Abandoned	O
WebKit	B-Language
Apple	O
Inc	O
.	O
?	O
</s>
<s>
BSD+LGPL	O
Active	O
and	O
supported	O
WidSets	O
Nokia	O
Proprietary	B-Application
Discontinued	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Engine	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
Windows	O
NT5	O
(	O
XP	B-Application
)	O
Windows	O
NT6	O
(	O
Vista	O
,	O
7/8/10	O
+	O
)	O
Linux	B-Application
Android	B-Application
Adobe	B-Operating_System
AIR	I-Operating_System
AveDesk	B-Application
Dashboard	B-Application
DesktopX	B-Application
gDesklets	B-Application
Google	B-Application
Desktop	B-Application
Gadgets	I-Application
Kapsules	B-Application
KlipFolio	O
Microsoft	B-Application
Gadgets	I-Application
NetFront	B-Operating_System
Netvibes	O
Dashboard	B-Application
bridge	O
Opera	B-Application
Plasma	B-Language
Rainmeter	B-Application
Screenlets	B-Application
Serious	B-Application
Samurize	I-Application
SuperKaramba	B-Language
WebKit	B-Language
WidSets	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Most	O
engines	O
rely	O
upon	O
interpreted	B-Application
languages	I-Application
.	O
</s>
<s>
Engine	O
HTML	B-Language
XHTML	B-Language
CSS	B-Language
XML	B-Protocol
JavaScript	B-Language
Perl	B-Language
Python	B-Language
Ruby	B-Language
C++	B-Language
Executable	B-Application
VBScript	B-Application
Adobe	B-Operating_System
AIR	I-Operating_System
AveDesk	B-Application
Dashboard	B-Application
DesktopX	B-Application
gDesklets	B-Application
Google	B-Application
Desktop	B-Application
Gadgets	I-Application
Kapsules	B-Application
KlipFolio	O
Microsoft	B-Application
Gadgets	I-Application
(	O
as	O
ActiveX	O
)	O
NetFront	B-Operating_System
Netvibes	O
Opera	B-Application
Plasma	B-Language
Rainmeter	B-Application
Screenlets	B-Application
Serious	B-Application
Samurize	I-Application
SuperKaramba	B-Language
WebKit	B-Language
WidSets	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Engine	O
IDE	B-Application
Widget	O
Container	O
Widget	B-Application
MIME	I-Application
Type	I-Application
Adobe	B-Operating_System
AIR	I-Operating_System
ZIP	B-General_Concept
application/vnd.adobe.air	O
-application-installer-package	O
+zip	O
AveDesk	B-Application
ZIP	B-General_Concept
Dashboard	B-Application
ZIP	B-General_Concept
application/x	O
-macbinary	O
DesktopX	B-Application
EXE	O
gDesklets	B-Application
Tar.gz	O
Google	B-Application
Desktop	B-Application
Gadgets	I-Application
ZIP	B-General_Concept
app/gg	O
Kapsules	B-Application
ZIP	B-General_Concept
KlipFolio	O
Proprietary	B-Application
XML	B-Protocol
Format	O
Microsoft	B-Application
Gadgets	I-Application
ZIP	B-General_Concept
application/x	O
-windows-gadget	O
NetFront	B-Operating_System
ZIP	B-General_Concept
application/x	O
-opera-widgets	O
Netvibes	O
Online	O
Opera	B-Application
ZIP	B-General_Concept
application/x	O
-opera-widgets	O
Plasma	B-Language
ZIP	B-General_Concept
,	O
with	O
plasmoid	O
as	O
extension	O
instead	O
of	O
zip	B-General_Concept
Rainmeter	B-Application
ZIP	B-General_Concept
,	O
with	O
rmskin	O
as	O
extension	O
instead	O
of	O
zip	B-General_Concept
application/vnd.rainmeter.SkinInstaller	O
Screenlets	B-Application
Tar.gz	O
Serious	B-Application
Samurize	I-Application
ZIP	B-General_Concept
SuperKaramba	B-Language
Tar.gz	O
WebKit	B-Language
WidSets	O
Yahoo	B-Application
!	I-Application
</s>
<s>
As	O
widgets	O
are	O
largely	O
combinations	O
of	O
HTML	B-Language
or	O
XHTML	B-Language
,	O
CSS	B-Language
,	O
and	O
Javascript	B-Language
in	O
most	O
cases	O
,	O
standard	O
AJAX	O
tools	O
,	O
such	O
as	O
Eclipse	B-Application
ATF	I-Application
,	O
can	O
be	O
used	O
for	O
development	O
.	O
</s>
<s>
Specialized	O
tools	O
may	O
give	O
access	O
to	O
additional	O
capabilities	O
supplied	O
by	O
frameworks	O
such	O
as	O
Dojo	B-General_Concept
or	O
Openrico	O
.	O
</s>
