<s>
Open	B-Application
Workbench	I-Application
is	O
a	O
free	O
project	B-Application
management	I-Application
software	I-Application
focused	O
on	O
scheduling	O
.	O
</s>
<s>
It	O
is	O
an	O
alternative	O
to	O
Microsoft	B-Operating_System
Project	I-Operating_System
.	O
</s>
<s>
Open	B-Application
Workbench	I-Application
was	O
originally	O
(	O
1984	O
)	O
developed	O
by	O
Christopher	O
H	O
.	O
Murray	O
and	O
Danek	O
M	O
.	O
Bienkowski	O
under	O
the	O
name	O
"	O
Project	O
Manager	O
Workbench	O
"	O
(	O
PMW	O
)	O
.	O
</s>
<s>
They	O
later	O
changed	O
the	O
name	O
to	O
"	O
Project	B-Application
Workbench	I-Application
"	O
(	O
PW	O
)	O
.	O
</s>
<s>
Niku	O
decided	O
to	O
make	O
the	O
software	O
open	B-License
source	I-License
and	O
renamed	O
it	O
Open	B-Application
Workbench	I-Application
.	O
</s>
<s>
In	O
2009	O
CA	O
Technologies	O
partnered	O
with	O
itdesign	O
GmbH	O
to	O
update	O
Open	B-Application
Workbench	I-Application
.	O
</s>
<s>
However	O
,	O
version	O
1.1.4	O
hosted	O
on	O
SourceForge	B-Application
is	O
still	O
downloaded	O
around	O
270	O
times	O
per	O
week	O
(	O
as	O
of	O
10/2017	O
)	O
.	O
</s>
<s>
There	O
are	O
differences	O
between	O
Open	B-Application
Workbench	I-Application
and	O
Microsoft	B-Operating_System
Project	I-Operating_System
.	O
</s>
<s>
Chief	O
among	O
them	O
is	O
that	O
Open	B-Application
Workbench	I-Application
schedules	O
based	O
on	O
effort	O
whereas	O
MS	B-Operating_System
Project	I-Operating_System
's	O
default	O
scheduling	O
method	O
is	O
based	O
on	O
duration	O
,	O
although	O
the	O
user	O
can	O
change	O
the	O
method	O
to	O
work	O
(	O
effort	O
)	O
.	O
</s>
<s>
In	O
other	O
words	O
,	O
in	O
an	O
Open	B-Application
Workbench	I-Application
plan	O
,	O
task	O
schedule	O
is	O
driven	O
by	O
the	O
number	O
of	O
hours	O
each	O
resource	O
will	O
work	O
per	O
week	O
to	O
cover	O
the	O
total	O
number	O
of	O
hours	O
required	O
for	O
the	O
tasks	O
,	O
whereas	O
Microsoft	B-Operating_System
Project	I-Operating_System
does	O
the	O
reverse	O
by	O
generating	O
estimates	O
for	O
the	O
resources	O
based	O
on	O
the	O
task	O
duration	O
rather	O
than	O
their	O
work	O
availability	O
.	O
</s>
<s>
For	O
this	O
reason	O
,	O
resource	O
leveling	O
is	O
also	O
different	O
:	O
Open	B-Application
Workbench	I-Application
will	O
do	O
it	O
based	O
on	O
resource	O
availability	O
whereas	O
MS	B-Operating_System
Project	I-Operating_System
will	O
do	O
it	O
based	O
on	O
the	O
next	O
available	O
block	O
of	O
time	O
that	O
fits	O
the	O
task	O
.	O
</s>
<s>
Open	B-Application
Workbench	I-Application
cannot	O
open	O
.mpp	B-Operating_System
files	O
produced	O
by	O
Microsoft	B-Operating_System
Project	I-Operating_System
.	O
</s>
<s>
Transfer	O
of	O
project	O
data	O
between	O
MS	B-Operating_System
Project	I-Operating_System
and	O
Open	B-Application
Workbench	I-Application
has	O
to	O
take	O
place	O
using	O
an	O
XML	O
file	O
.	O
</s>
<s>
Open	B-Application
Workbench	I-Application
runs	O
under	O
Microsoft	B-Application
Windows	I-Application
2000	O
,	O
XP	O
,	O
Vista	O
,	O
and	O
7	O
.	O
</s>
<s>
Although	O
Open	B-Application
Workbench	I-Application
is	O
provided	O
as	O
free	O
software	O
,	O
users	O
require	O
the	O
CA	O
Clarity	O
PPM	O
suite	O
if	O
they	O
want	O
to	O
use	O
a	O
central	O
database	O
to	O
manage	O
enterprise	O
collaboration	O
.	O
</s>
<s>
Clarity	O
's	O
Schedule	O
Connect	O
module	O
adds	O
database	O
access	O
to	O
Open	B-Application
Workbench	I-Application
's	O
screens	O
;	O
it	O
must	O
be	O
installed	O
on	O
both	O
the	O
central	O
server	O
and	O
the	O
desktops	O
.	O
</s>
<s>
Open	B-Application
Workbench	I-Application
claims	O
to	O
be	O
open	B-License
source	I-License
.	O
</s>
<s>
However	O
,	O
the	O
source	O
code	O
available	O
through	O
SourceForge	B-Application
does	O
not	O
include	O
"	O
scheduling	O
algorithms	O
 [ which ] 	O
are	O
currently	O
not	O
open	O
sourced	O
and	O
will	O
be	O
maintained	O
by	O
CA	O
Technologies	O
(	O
Computer	O
Associates	O
)	O
"	O
.	O
</s>
<s>
The	O
source	O
code	O
for	O
Open	B-Application
Workbench	I-Application
1.1.6	O
is	O
not	O
available	O
.	O
</s>
