<s>
MDL	B-Application
Chime	I-Application
was	O
a	O
free	O
plugin	B-Application
used	O
by	O
web	B-Application
browsers	I-Application
to	O
display	O
the	O
three-dimensional	O
structures	O
of	O
molecules	O
.	O
</s>
<s>
and	O
was	O
based	O
on	O
the	O
RasMol	B-Language
code	O
.	O
</s>
<s>
Although	O
available	O
in	O
1996	O
in	O
both	O
Windows	B-Application
95	I-Application
and	O
classic	B-Application
Mac	I-Application
OS	I-Application
versions	O
for	O
both	O
Netscape	B-Protocol
and	O
Internet	B-Application
Explorer	I-Application
browsers	B-Application
,	O
development	O
of	O
Chime	O
did	O
not	O
follow	O
the	O
move	O
to	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
for	O
the	O
Mac	O
and	O
support	O
for	O
Windows-based	O
browsers	B-Application
other	O
than	O
Internet	B-Application
Explorer	I-Application
was	O
limited	O
(	O
although	O
it	O
works	O
well	O
in	O
Mozilla	B-Application
Firefox	I-Application
)	O
.	O
</s>
<s>
Apart	O
from	O
this	O
,	O
most	O
subsequent	O
updates	O
were	O
for	O
the	O
installation	O
package	O
to	O
follow	O
the	O
development	O
of	O
Windows	O
and	O
Internet	B-Application
Explorer	I-Application
.	O
</s>
<s>
Now	O
Chime	O
is	O
owned	O
by	O
Dassault	O
Systemes	O
BIOVIA	O
(	O
formerly	O
Accelrys	O
)	O
,	O
and	O
has	O
been	O
merged	O
into	O
Discovery	B-Application
Studio	I-Application
,	O
but	O
no	O
longer	O
exists	O
as	O
a	O
free	O
browser	B-Application
plugin	B-Application
.	O
</s>
<s>
Chime	O
largely	O
has	O
been	O
superseded	O
by	O
Jmol	B-Language
,	O
a	O
non-proprietary	O
open-source	B-Application
Java	O
molecular	O
visualization	O
application	O
and	O
JavaScript	O
applet	O
that	O
has	O
maintained	O
most	O
Chime	O
command	O
compatibility	O
while	O
adding	O
numerous	O
features	O
.	O
</s>
