<s>
CoCalc	B-Application
(	O
formerly	O
called	O
SageMathCloud	B-Application
)	O
is	O
a	O
web-based	B-Application
cloud	B-Architecture
computing	I-Architecture
(	O
SaaS	B-Architecture
)	O
and	O
course	B-Application
management	I-Application
platform	O
for	O
computational	O
mathematics	O
.	O
</s>
<s>
Part	O
of	O
the	O
Sage	B-Application
project	I-Application
,	O
it	O
supports	O
editing	O
of	O
Sage	B-Application
worksheets	O
,	O
LaTeX	B-Application
documents	O
and	O
Jupyter	O
notebooks	O
.	O
</s>
<s>
CoCalc	B-Application
runs	O
an	O
Ubuntu	B-Operating_System
Linux	I-Operating_System
environment	O
that	O
can	O
be	O
interacted	O
with	O
through	O
a	O
terminal	O
,	O
additionally	O
giving	O
access	O
to	O
most	O
of	O
the	O
capabilities	O
of	O
Linux	B-Application
.	O
</s>
<s>
CoCalc	B-Application
offers	O
both	O
free	O
and	O
paid	O
accounts	O
.	O
</s>
<s>
Over	O
200	O
courses	O
have	O
used	O
CoCalc	B-Application
.	O
</s>
<s>
CoCalc	B-Application
directly	O
supports	O
Sage	B-Application
worksheets	O
,	O
which	O
interactively	O
evaluate	O
Sage	B-Application
code	O
.	O
</s>
<s>
The	O
worksheets	O
support	O
Markdown	O
and	O
HTML	B-Language
for	O
decoration	O
,	O
and	O
R	B-Language
,	O
Octave	B-Language
,	O
Cython	B-Application
,	O
Julia	B-Application
and	O
others	O
for	O
programming	O
in	O
addition	O
to	O
Sage	B-Application
.	O
</s>
<s>
CoCalc	B-Application
supports	O
Jupyter	O
notebooks	O
,	O
which	O
are	O
enhanced	O
with	O
real-time	O
synchronization	O
for	O
collaboration	O
and	O
a	O
history	O
recording	O
function	O
.	O
</s>
<s>
Additionally	O
,	O
there	O
is	O
also	O
a	O
full	O
LaTeX	B-Application
editor	O
,	O
with	O
collaboration	O
support	O
,	O
a	O
preview	O
of	O
the	O
resulting	O
document	O
and	O
also	O
support	O
for	O
.	O
</s>
<s>
With	O
its	O
online	O
,	O
CoCalc	B-Application
also	O
indirectly	O
supports	O
editing	O
and	O
running	O
many	O
other	O
languages	O
,	O
including	O
Java	B-Language
,	O
C/C	O
++	O
,	O
Perl	B-Language
,	O
Ruby	B-Language
,	O
and	O
other	O
popular	O
languages	O
that	O
can	O
be	O
run	O
on	O
Linux	B-Application
.	O
</s>
<s>
Users	O
can	O
have	O
multiple	O
projects	O
on	O
CoCalc	B-Application
,	O
and	O
each	O
project	O
has	O
separate	O
disk	O
space	O
and	O
may	O
be	O
on	O
an	O
entirely	O
different	O
server	O
.	O
</s>
<s>
Many	O
users	O
can	O
collaborate	O
on	O
a	O
single	O
project	O
,	O
and	O
documents	O
are	O
synced	O
so	O
multiple	O
users	O
can	O
edit	O
the	O
same	O
file	O
at	O
once	O
,	O
similar	O
to	O
Google	B-Application
Docs	I-Application
.	O
</s>
<s>
Through	O
the	O
terminal	O
,	O
files	O
can	O
be	O
tracked	O
using	O
revision	O
control	O
systems	O
like	O
Git	B-Application
.	O
</s>
<s>
CoCalc	B-Application
is	O
open	O
source	O
software	O
hosted	O
by	O
SageMath	B-Application
Inc	O
.	O
</s>
<s>
The	O
creator	O
and	O
lead	O
developer	O
of	O
CoCalc	B-Application
is	O
William	O
Stein	O
,	O
a	O
former	O
professor	O
of	O
mathematics	O
at	O
the	O
University	O
of	O
Washington	O
who	O
also	O
created	O
the	O
Sage	B-Application
software	O
system	O
.	O
</s>
<s>
Initial	O
development	O
was	O
funded	O
by	O
the	O
University	O
of	O
Washington	O
and	O
grants	O
from	O
the	O
National	O
Science	O
Foundation	O
and	O
Google	B-Application
.	I-Application
</s>
<s>
Now	O
CoCalc	B-Application
is	O
mostly	O
funded	O
by	O
paying	O
users	O
.	O
</s>
<s>
It	O
is	O
intended	O
as	O
a	O
replacement	O
for	O
,	O
which	O
also	O
let	O
users	O
edit	O
and	O
share	O
Sage	B-Application
worksheets	O
online	O
.	O
</s>
