<s>
Apache	B-Application
Taverna	I-Application
was	O
an	O
open	B-Application
source	I-Application
software	I-Application
tool	O
for	O
designing	O
and	O
executing	O
workflows	B-Operating_System
,	O
initially	O
created	O
by	O
the	O
myGrid	O
project	O
under	O
the	O
name	O
Taverna	B-Application
Workbench	I-Application
,	O
then	O
a	O
project	O
under	O
the	O
Apache	B-Application
incubator	I-Application
.	O
</s>
<s>
Taverna	O
allowed	O
users	O
to	O
integrate	O
many	O
different	O
software	O
components	O
,	O
including	O
WSDL	O
SOAP	B-Application
or	O
REST	B-Protocol
Web	O
services	O
,	O
such	O
as	O
those	O
provided	O
by	O
the	O
National	O
Center	O
for	O
Biotechnology	O
Information	O
,	O
the	O
European	O
Bioinformatics	O
Institute	O
,	O
the	O
DNA	O
Databank	O
of	O
Japan	O
(	O
DDBJ	O
)	O
,	O
SoapLab	O
,	O
BioMOBY	B-Language
and	O
EMBOSS	B-Application
.	O
</s>
<s>
The	O
set	O
of	O
available	O
services	O
was	O
not	O
finite	O
and	O
users	O
could	O
import	O
new	O
service	O
descriptions	O
into	O
the	O
Taverna	B-Application
Workbench	I-Application
.	O
</s>
<s>
Taverna	B-Application
Workbench	I-Application
provided	O
a	O
desktop	O
authoring	O
environment	O
and	O
enactment	O
engine	O
for	O
scientific	O
workflows	B-Operating_System
.	O
</s>
<s>
The	O
Taverna	O
workflow	B-Operating_System
engine	O
was	O
also	O
available	O
separately	O
,	O
as	O
a	O
Java	B-Language
API	O
,	O
command	B-Application
line	I-Application
tool	I-Application
or	O
as	O
a	O
server	O
.	O
</s>
<s>
Some	O
of	O
the	O
services	O
for	O
the	O
use	O
in	O
Taverna	O
workflows	B-Operating_System
could	O
be	O
discovered	O
through	O
the	O
BioCatalogue	O
-	O
a	O
public	O
,	O
centralised	O
and	O
curated	O
registry	O
of	O
Life	O
Science	O
Web	O
services	O
.	O
</s>
<s>
Taverna	O
workflows	B-Operating_System
could	O
also	O
be	O
shared	O
with	O
other	O
people	O
through	O
the	O
myExperiment	O
social	O
web	O
site	O
for	O
scientists	O
.	O
</s>
<s>
On	O
February	O
20	O
,	O
2020	O
,	O
Apache	B-Application
Incubator	I-Application
retired	O
the	O
project	O
and	O
removed	O
the	O
code	O
from	O
its	O
website	O
.	O
</s>
<s>
Taverna	O
workflows	B-Operating_System
can	O
invoke	O
general	O
SOAP/WSDL	O
or	O
REST	B-Protocol
Web	O
services	O
,	O
and	O
more	O
specific	O
SADI	O
,	O
BioMart	O
,	O
BioMoby	B-Language
and	O
SoapLab	O
Web	O
services	O
.	O
</s>
<s>
It	O
can	O
also	O
invoke	O
R	B-Language
statistical	O
services	O
,	O
local	O
Java	B-Language
code	I-Language
,	O
external	O
tools	O
on	O
local	O
and	O
remote	O
machines	O
(	O
via	O
ssh	B-Protocol
)	O
,	O
do	O
XPath	B-Language
and	O
other	O
text	O
manipulation	O
,	O
import	O
a	O
spreadsheet	O
and	O
include	O
sub-workflows	O
.	O
</s>
<s>
Taverna	B-Application
Workbench	I-Application
includes	O
the	O
ability	O
to	O
monitor	O
the	O
running	O
of	O
a	O
workflow	B-Operating_System
and	O
to	O
examine	O
the	O
provenance	O
of	O
the	O
data	O
produced	O
,	O
exposing	O
details	O
of	O
the	O
workflow	B-Operating_System
run	O
as	O
a	O
W3C	O
PROV-O	O
RDF	O
provenance	O
graph	O
,	O
within	O
a	O
structured	O
Research	B-Application
Object	I-Application
bundle	O
ZIP	B-General_Concept
file	I-General_Concept
that	O
includes	O
inputs	O
,	O
outputs	O
,	O
intermediate	O
values	O
and	O
the	O
executed	O
workflow	B-Operating_System
definition	O
;	O
together	O
this	O
format	O
is	O
called	O
TavernaProv	O
.	O
</s>
<s>
Taverna	O
includes	O
the	O
ability	O
to	O
search	O
for	O
services	O
described	O
in	O
BioCatalogue	O
to	O
invoke	O
from	O
workflows	B-Operating_System
.	O
</s>
<s>
However	O
,	O
services	O
do	O
not	O
need	O
to	O
be	O
described	O
within	O
BioCatalogue	O
to	O
be	O
included	O
in	O
workflows	B-Operating_System
as	O
they	O
can	O
be	O
added	O
from	O
a	O
WSDL	O
Web	O
Service	O
description	O
or	O
entered	O
as	O
a	O
REST	B-Protocol
URI	O
pattern	O
.	O
</s>
<s>
Taverna	O
also	O
includes	O
the	O
capability	O
to	O
search	O
for	O
workflows	B-Operating_System
on	O
myExperiment	O
.	O
</s>
<s>
The	O
Taverna	B-Application
Workbench	I-Application
can	O
download	O
,	O
modify	O
and	O
run	O
workflows	B-Operating_System
discovered	O
on	O
myExperiment	O
,	O
and	O
also	O
upload	O
created	O
workflows	B-Operating_System
in	O
order	O
to	O
share	O
them	O
with	O
others	O
using	O
the	O
social	O
aspects	O
of	O
myExperiment	O
.	O
</s>
<s>
Taverna	O
workflows	B-Operating_System
do	O
not	O
need	O
to	O
be	O
executed	O
within	O
the	O
Taverna	B-Application
Workbench	I-Application
.	O
</s>
<s>
Workflows	B-Operating_System
can	O
also	O
be	O
run	O
by	O
:	O
</s>
<s>
This	O
means	O
that	O
services	O
downstream	O
in	O
the	O
workflow	B-Operating_System
can	O
start	O
as	O
soon	O
as	O
the	O
first	O
data	O
item	O
is	O
received	O
,	O
without	O
waiting	O
for	O
the	O
whole	O
data	O
list	O
to	O
become	O
available	O
from	O
upstream	O
services	O
and	O
iterations	O
.	O
</s>
<s>
Taverna	O
services	O
execute	O
in	O
parallel	O
when	O
possible	O
,	O
as	O
Taverna	O
workflows	B-Operating_System
are	O
primarily	O
data-driven	O
rather	O
than	O
control-driven	O
.	O
</s>
<s>
Taverna	O
has	O
been	O
an	O
open-source	B-Application
project	O
since	O
2003	O
,	O
with	O
contributors	O
from	O
multiple	O
academic	O
and	O
industry	O
institutions	O
.	O
</s>
<s>
In	O
October	O
2014	O
Taverna	O
became	O
an	O
independent	O
Apache	B-Application
incubator	I-Application
project	O
,	O
and	O
changed	O
its	O
name	O
to	O
Apache	B-Application
Taverna	I-Application
(	O
incubating	O
)	O
.	O
</s>
<s>
The	O
project	O
is	O
developing	O
Apache	B-Application
Taverna	I-Application
3.x	O
,	O
which	O
license	O
changed	O
from	O
LGPL	B-Application
2.1	I-Application
to	O
Apache	B-Application
License	I-Application
2.0	I-Application
.	O
</s>
