<s>
Chart.js	B-Application
is	O
a	O
free	O
,	O
open-source	B-License
JavaScript	B-Language
library	I-Language
for	O
data	B-Application
visualization	I-Application
,	O
which	O
supports	O
eight	O
chart	O
types	O
:	O
bar	B-Application
,	O
line	B-Application
,	O
area	B-Application
,	O
pie	B-Application
(	O
doughnut	O
)	O
,	O
bubble	B-Application
,	O
radar	B-Application
,	O
polar	O
,	O
and	O
scatter	B-Application
.	O
</s>
<s>
Created	O
by	O
London-based	O
web	B-Operating_System
developer	I-Operating_System
Nick	O
Downie	O
in	O
2013	O
,	O
now	O
it	O
is	O
maintained	O
by	O
the	O
community	O
and	O
is	O
the	O
second	O
most	O
popular	O
JavaScript	B-Language
charting	O
library	O
on	O
GitHub	B-Application
by	O
the	O
number	O
of	O
stars	O
after	O
D3.js	B-Language
,	O
considered	O
significantly	O
easier	O
to	O
use	O
though	O
less	O
customizable	O
than	O
the	O
latter	O
.	O
</s>
<s>
Chart.js	B-Application
renders	O
in	O
HTML5	B-Language
canvas	I-Language
and	O
is	O
widely	O
covered	O
as	O
one	O
of	O
the	O
best	O
data	B-Application
visualization	I-Application
libraries	O
.	O
</s>
<s>
It	O
is	O
available	O
under	O
the	B-License
MIT	I-License
license	I-License
.	O
</s>
