<s>
The	O
Qt	B-Language
Project	I-Language
is	O
an	O
open	O
collaboration	O
effort	O
to	O
coordinate	O
the	O
development	O
of	O
the	O
Qt	B-Language
software	I-Language
framework	I-Language
.	O
</s>
<s>
Initially	O
founded	O
by	O
Nokia	O
in	O
2011	O
,	O
the	O
project	O
is	O
now	O
led	O
by	O
The	O
Qt	B-Language
Company	O
.	O
</s>
<s>
Haavard	O
Nord	O
and	O
Eirik	O
Chambe-Eng	O
(	O
the	O
original	O
developers	O
of	O
Qt	B-Language
and	O
the	O
CEO	O
and	O
President	O
,	O
respectively	O
,	O
of	O
Trolltech	O
)	O
began	O
development	O
of	O
"	O
Qt	B-Language
"	O
in	O
1991	O
,	O
three	O
years	O
before	O
the	O
company	O
was	O
incorporated	O
as	O
Quasar	O
Technologies	O
,	O
then	O
changed	O
the	O
name	O
to	O
Troll	O
Tech	O
and	O
then	O
to	O
Trolltech	O
.	O
</s>
<s>
Until	O
version	O
1.45	O
the	O
source	O
code	O
of	O
Qt	B-Language
was	O
released	O
under	O
the	O
Qt	B-Language
Free	O
Edition	O
License	O
.	O
</s>
<s>
This	O
was	O
viewed	O
as	O
not	O
compliant	O
with	O
the	O
open	O
source	O
principle	O
by	O
the	O
Open	O
Source	O
Initiative	O
and	O
the	O
free	B-Application
software	I-Application
definition	O
by	O
Free	B-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
because	O
,	O
while	O
the	O
source	O
was	O
available	O
,	O
it	O
did	O
not	O
allow	O
the	O
redistribution	O
of	O
modified	O
versions	O
.	O
</s>
<s>
Controversy	O
arose	O
around	O
1998	O
when	O
it	O
became	O
clear	O
that	O
KDE	B-Application
's	I-Application
K	B-Application
Desktop	I-Application
Environment	I-Application
was	O
going	O
to	O
become	O
one	O
of	O
the	O
leading	O
desktop	O
environments	O
for	O
Linux	B-Application
.	O
</s>
<s>
As	O
it	O
was	O
based	O
on	O
Qt	B-Language
,	O
many	O
people	O
in	O
the	O
free	B-Application
software	I-Application
movement	O
worried	O
that	O
an	O
essential	O
piece	O
of	O
one	O
of	O
their	O
major	O
operating	O
systems	O
would	O
be	O
proprietary	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
Qt	B-Language
2.0	O
,	O
the	O
license	O
was	O
changed	O
to	O
the	O
Q	B-Language
Public	I-Language
License	I-Language
(	O
QPL	B-Language
)	O
,	O
a	O
free	B-Application
software	I-Application
license	O
but	O
one	O
regarded	O
by	O
the	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
as	O
incompatible	O
with	O
the	O
GPL	O
.	O
</s>
<s>
A	O
compromise	O
was	O
found	O
between	O
KDE	B-Application
and	O
Trolltech	O
whereby	O
Qt	B-Language
would	O
not	O
be	O
able	O
to	O
fall	O
under	O
a	O
more	O
restrictive	O
license	O
than	O
the	O
QPL	B-Language
,	O
even	O
if	O
Trolltech	O
was	O
bought	O
out	O
or	O
went	O
bankrupt	O
.	O
</s>
<s>
This	O
led	O
to	O
the	O
creation	O
of	O
the	O
KDE	B-Application
Free	O
Qt	B-Language
Foundation	O
which	O
guarantees	O
that	O
Qt	B-Language
would	O
fall	O
under	O
a	O
BSD-style	B-Operating_System
license	I-Operating_System
should	O
no	O
free/open	O
source	O
version	O
of	O
Qt	B-Language
be	O
released	O
during	O
a	O
period	O
of	O
12	O
months	O
.	O
</s>
<s>
In	O
2000	O
,	O
Qt	B-Language
2.2	O
was	O
released	O
under	O
the	O
GPL	O
v2	O
,	O
ending	O
all	O
controversy	O
regarding	O
GPL	O
compatibility	O
.	O
</s>
<s>
On	O
14	O
January	O
2009	O
Qt	B-Language
version	O
4.5	O
was	O
relicensed	O
,	O
adding	O
LGPL	B-Application
as	O
licensing	O
option	O
.	O
</s>
<s>
The	O
Qt	B-Language
Project	I-Language
was	O
founded	O
on	O
21	O
October	O
2011	O
.	O
</s>
<s>
In	O
August	O
2012	O
Digia	O
announced	O
to	O
acquire	O
all	O
rights	O
to	O
Qt	B-Language
and	O
take	O
Nokia	O
's	O
role	O
within	O
the	O
Qt	B-Language
Project	I-Language
.	O
</s>
<s>
The	O
Qt	B-Language
Project	I-Language
is	O
not	O
a	O
separate	O
legal	O
entity	O
or	O
organization	O
;	O
Digia	O
retains	O
all	O
trademarks	O
around	O
Qt	B-Language
.	O
</s>
<s>
Qt	B-Language
's	O
Open	O
Governance	O
is	O
modelled	O
after	O
WebKit	B-Language
's	I-Language
.	O
</s>
<s>
Aside	O
from	O
the	O
project	O
leader	O
Digia	O
and	O
various	O
individuals	O
,	O
a	O
number	O
of	O
other	O
organizations	O
participate	O
in	O
the	O
Qt	B-Language
Project	I-Language
.	O
</s>
<s>
Second-largest	O
Qt	B-Language
contributor	O
is	O
KDAB	O
,	O
a	O
Swedish	O
Qt	B-Language
consulting	O
company	O
.	O
</s>
<s>
KDAB	O
together	O
with	O
RIM/BlackBerry	O
are	O
maintaining	O
the	O
QNX	B-Operating_System
and	O
BlackBerry	B-Application
10	I-Application
ports	O
of	O
Qt	B-Language
.	O
</s>
<s>
Another	O
big	O
participator	O
is	O
Intel	O
,	O
contributing	O
for	O
example	O
Wayland	B-Language
support	O
.	O
</s>
<s>
AudioCodes	O
maintains	O
IBM	B-Protocol
ClearCase	I-Protocol
support	O
in	O
Qt	B-Language
Creator	I-Language
.	O
</s>
<s>
Many	O
contributions	O
also	O
come	O
from	O
the	O
KDE	B-Application
community	I-Application
,	O
which	O
is	O
oftentimes	O
adding	O
features	O
from	O
their	O
KDE	B-Language
Frameworks	I-Language
upstream	O
into	O
Qt	B-Language
.	O
</s>
