<s>
Qiqqa	B-Application
(	O
pronounced	O
"	O
Quicker	O
"	O
)	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
software	I-License
that	O
allows	O
researchers	O
to	O
work	O
with	O
thousands	O
of	O
PDFs	B-Application
.	O
</s>
<s>
It	O
combines	O
PDF	B-Application
reference	B-Application
management	I-Application
tools	O
,	O
a	O
citation	B-Application
manager	I-Application
,	O
and	O
a	O
mind	O
map	O
brainstorming	O
tool	O
.	O
</s>
<s>
It	O
integrates	O
with	O
Microsoft	B-Application
Word	I-Application
XP	I-Application
,	O
2003	O
,	O
2007	O
and	O
2010	O
and	O
BibTeX/LaTeX	O
to	O
automatically	O
produce	O
citations	O
and	O
bibliographies	O
in	O
thousands	O
of	O
styles	O
.	O
</s>
<s>
The	O
development	O
of	O
Qiqqa	B-Application
began	O
in	O
Cambridge	O
,	O
UK	O
,	O
in	O
December	O
2009	O
.	O
</s>
<s>
A	O
public	O
alpha	O
was	O
released	O
in	O
April	O
2010	O
,	O
offering	O
PDF	B-Application
management	O
and	O
brainstorming	O
capabilities	O
.	O
</s>
<s>
Subsequent	O
releases	O
have	O
seen	O
the	O
incorporation	O
of	O
the	O
Web	O
Library	O
,	O
OCR	O
,	O
integration	O
with	O
BibTeX	B-Language
and	O
other	O
reference	B-Application
managers	I-Application
,	O
and	O
the	O
use	O
of	O
natural	B-Language
language	I-Language
processing	I-Language
(	O
NLP	B-Language
)	O
techniques	O
to	O
guide	O
researchers	O
in	O
their	O
reading	O
.	O
</s>
<s>
Shortly	O
after	O
its	O
release	O
,	O
Qiqqa	B-Application
has	O
been	O
noticed	O
by	O
universities	O
and	O
their	O
libraries	O
.	O
</s>
<s>
In	O
2011	O
,	O
Qiqqa	B-Application
won	O
both	O
the	O
University	O
of	O
Cambridge	O
CUE	O
and	O
CUTEC	O
,	O
and	O
the	O
Cambridge	O
Wireless	O
Discovering	O
Start-Ups	O
competitions	O
.	O
</s>
<s>
Qiqqa	B-Application
was	O
an	O
award	O
winner	O
in	O
the	O
2012	O
Santander	O
Universities	O
Entrepreneurship	O
Awards	O
.	O
</s>
<s>
In	O
2020	O
,	O
Qiqqa	B-Application
decided	O
to	O
change	O
software	O
pricing	O
model	O
and	O
make	O
it	O
free	B-License
and	I-License
open-source	I-License
:	O
"	O
After	O
10	O
years	O
of	O
your	O
support	O
we	O
have	O
decided	O
to	O
make	O
Qiqqa	B-Application
open	O
source	O
so	O
that	O
it	O
can	O
be	O
grown	O
and	O
extended	O
by	O
its	O
community	O
of	O
thousands	O
of	O
active	O
users.	O
"	O
</s>
<s>
Qiqqa	B-Application
does	O
not	O
seem	O
to	O
have	O
attracted	O
a	O
large	O
user	O
base	O
,	O
compared	O
to	O
other	O
recent	O
reference	B-Application
management	I-Application
programs	O
developed	O
from	O
2006	O
to	O
date	O
.	O
</s>
