<s>
HUBzero	B-Application
is	O
an	O
open	B-Application
source	I-Application
software	I-Application
platform	O
for	O
building	O
websites	O
that	O
support	O
scientific	O
activities	O
.	O
</s>
<s>
HUBzero	B-Application
was	O
created	O
by	O
researchers	O
at	O
Purdue	O
University	O
in	O
conjunction	O
with	O
the	O
NSF-sponsored	O
Network	O
for	O
Computational	O
Nanotechnology	O
.	O
</s>
<s>
HUBzero	B-Application
allows	O
individuals	O
to	O
create	O
web	O
sites	O
that	O
connect	O
a	O
community	O
in	O
scientific	O
research	O
and	O
educational	O
activities	O
.	O
</s>
<s>
HUBzero	B-Application
sites	O
combine	O
Web	O
2.0	O
concepts	O
with	O
middleware	O
that	O
provides	O
access	O
to	O
interactive	O
simulation	O
tools	O
including	O
access	O
to	O
TeraGrid	O
,	O
the	O
Open	O
Science	O
Grid	O
,	O
and	O
other	O
national	O
grid	B-Architecture
computing	I-Architecture
resources	O
.	O
</s>
<s>
HUBzero	B-Application
is	O
released	O
under	O
various	O
open	B-License
source	I-License
licenses	O
.	O
</s>
<s>
HUBzero	B-Application
provides	O
free	O
preconfigured	O
virtual	O
machines	O
images	O
that	O
contain	O
the	O
full	O
version	O
of	O
the	O
HUBzero	B-Application
platform	O
.	O
</s>
<s>
The	O
HUBzero	B-Application
Essential	O
instance	O
is	O
also	O
available	O
through	O
Amazon	O
Web	O
Services	O
.	O
</s>
<s>
HUBzero	B-Application
also	O
offers	O
two	O
paid	O
services	O
,	O
the	O
HUBzero	B-Application
Foundation	O
and	O
a	O
No	O
Hassle	O
Hosting	O
service	O
.	O
</s>
<s>
The	O
HUBzero	B-Application
Foundation	O
is	O
a	O
community-based	O
,	O
non-profit	O
organization	O
that	O
promotes	O
the	O
use	O
of	O
HUBzero	B-Application
and	O
ensures	O
ongoing	O
sustainability	O
of	O
the	O
core	O
software	O
.	O
</s>
<s>
The	O
HUBzero	B-Application
No	O
Hassle	O
Hosting	O
service	O
offers	O
hosting	O
solutions	O
for	O
other	O
non-profit	O
institutions	O
.	O
</s>
<s>
Through	O
No	O
Hassle	O
Hosting	O
,	O
sites	O
based	O
on	O
the	O
HUBzero	B-Application
platform	O
are	O
maintained	O
and	O
supported	O
by	O
the	O
HUBzero	B-Application
Development	O
Team	O
at	O
Purdue	O
University	O
with	O
better	O
than	O
99%	O
uptime	O
.	O
</s>
<s>
The	O
website	O
is	O
built	O
from	O
open-source	B-Application
software	I-Application
:	O
the	O
Linux	B-Application
operating	I-Application
system	I-Application
,	O
the	O
Apache	B-Application
web	I-Application
server	I-Application
,	O
the	O
MySQL	B-Application
database	O
,	O
the	O
Joomla	B-Protocol
content	O
management	O
system	O
,	O
and	O
the	O
PHP	B-Application
web	O
scripting	O
language	O
.	O
</s>
<s>
The	O
HUBzero	B-Application
software	O
allows	O
individuals	O
to	O
access	O
simulation	O
tools	O
and	O
share	O
information	O
.	O
</s>
