<s>
Kopano	B-Protocol
is	O
an	O
open-source	B-Application
groupware	B-Application
application	O
suite	O
originally	O
based	O
on	O
Zarafa	B-Protocol
.	O
</s>
<s>
The	O
initial	O
version	O
of	O
Kopano	B-Protocol
Core	O
(	O
KC	O
)	O
was	O
forked	O
from	O
the	O
then-current	O
release	O
of	O
(	O
the	O
open-source	B-Application
parts	O
of	O
)	O
Zarafa	B-Protocol
Collaboration	B-Application
Platform	I-Application
,	O
and	O
superseded	O
ZCP	O
in	O
terms	O
of	O
lineage	O
as	O
ZCP	O
switched	O
to	O
maintenance	O
mode	O
with	O
patches	O
flowing	O
from	O
KC	O
.	O
</s>
<s>
Kopano	B-Protocol
WebApp	O
similarly	O
descended	O
from	O
Zarafa	B-Protocol
WebApp	O
.	O
</s>
<s>
Since	O
October	O
2017	O
,	O
Kopano	B-Protocol
Core	O
is	O
also	O
known	O
more	O
specifically	O
as	O
Kopano	B-Protocol
Groupware	B-Application
Core	O
,	O
since	O
Kopano	B-Protocol
B.V.	O
developed	O
more	O
products	O
that	O
were	O
not	O
directly	O
requiring	O
groupware	B-Application
components	O
.	O
</s>
<s>
While	O
Kopano	B-Protocol
's	O
business	O
strategy	O
has	O
shifted	O
towards	O
providing	O
a	O
comprehensive	O
office	O
collaboration	O
suite	O
in	O
its	O
own	O
right	O
,	O
Kopano	B-Protocol
Core	O
supports	O
connections	O
from	O
Outlook	O
clients	O
either	O
via	O
Z-push/ActiveSync	O
,	O
or	O
the	O
last	O
Windows	O
MAPI	B-Protocol
plugin	O
from	O
Zarafa	B-Protocol
.	O
</s>
<s>
The	O
Kopano	B-Protocol
Outlook	O
Extension	O
add-in	O
for	O
Outlook	O
provides	O
the	O
Outlook	O
functionality	O
that	O
ActiveSync	B-Operating_System
alone	O
does	O
n't	O
support	O
.	O
</s>
<s>
ActiveSync	B-Operating_System
and	O
Kopano	B-Protocol
Outlook	O
Extension	O
together	O
are	O
therefore	O
able	O
to	O
fully	O
integrate	O
the	O
Kopano	B-Protocol
backend	O
within	O
Outlook	O
in	O
a	O
corporate	O
environment	O
.	O
</s>
<s>
owncloud	O
/	O
nextcloud	O
)	O
,	O
for	O
integrated	O
video	O
conference	O
(	O
webmeetings	O
)	O
or	O
for	O
handling	O
S/MIME	B-Protocol
email	O
within	O
WebApp	O
.	O
</s>
<s>
This	O
is	O
the	O
same	O
look	O
and	O
feel	O
as	O
WebApp	O
but	O
integrates	O
directly	O
with	O
the	O
user	O
's	O
desktop	O
and	O
it	O
is	O
available	O
for	O
Windows	O
,	O
Linux	B-Application
or	O
Mac	O
.	O
</s>
<s>
All	O
server-side	O
components	O
(	O
Kopano	B-Protocol
Core	O
)	O
and	O
WebApp	O
are	O
published	O
under	O
the	O
Affero	O
General	O
Public	O
License	O
(	O
AGPL	O
)	O
.	O
</s>
<s>
Microsoft	O
Outlook	O
,	O
as	O
well	O
as	O
Kopano/Zarafa	O
clients	O
,	O
uses	O
MAPI	B-Protocol
at	O
the	O
source	O
code	O
level	O
.	O
</s>
<s>
So-called	O
MAPI	B-Protocol
providers	O
(	O
essentially	O
plugins	O
)	O
abstract	O
and	O
take	O
care	O
of	O
the	O
underlying	O
transport	O
mechanism	O
.	O
</s>
<s>
Kopano-server	O
exposes	O
its	O
functionality	O
over	O
stream	O
sockets	O
and	O
uses	O
the	O
HTTP	B-Protocol
protocol	I-Protocol
,	O
with	O
data	O
being	O
serialized	O
using	O
SOAP/XML	O
.	O
</s>
<s>
The	O
commands	O
sent	O
in	O
the	O
XML	O
data	O
are	O
specific	O
to	O
Kopano/Zarafa	O
.	O
</s>
<s>
Conversely	O
,	O
the	O
Kopano	B-Protocol
MAPI	B-Protocol
provider	O
implements	O
this	O
protocol	O
on	O
the	O
client	O
side	O
.	O
</s>
<s>
These	O
HTTP	B-Protocol
connections	O
can	O
be	O
secured	O
with	O
TLS/SSL	B-Protocol
and	O
be	O
proxied	O
if	O
desired	O
.	O
</s>
<s>
Because	O
Exchange	O
instead	O
uses	O
MAPI/RPC	B-Protocol
on	O
the	O
wire	O
,	O
the	O
stock	O
Outlook	O
connector	O
for	O
Exchange	O
could	O
not	O
be	O
used	O
and	O
traditionally	O
required	O
the	O
Windows	O
version	O
of	O
the	O
Zarafa	B-Protocol
MAPI	B-Protocol
provider	O
(	O
a	O
product	O
that	O
is	O
proprietary	O
and	O
unsupported	O
since	O
2016	O
–	O
04	O
)	O
.	O
</s>
<s>
Outlook	O
versions	O
2013	O
and	O
2016	O
,	O
support	O
ActiveSync	B-Operating_System
,	O
a	O
protocol	O
also	O
used	O
by	O
many	O
mobile	O
clients	O
,	O
and	O
by	O
using	O
the	O
Z-push	B-Protocol
software	O
on	O
the	O
server	O
side	O
,	O
ActiveSync	B-Operating_System
requests	O
can	O
be	O
translated	O
and	O
such	O
clients	O
can	O
effectively	O
talk	O
to	O
a	O
Kopano	B-Protocol
server	O
as	O
well	O
.	O
</s>
<s>
Kopano	B-Protocol
Core	O
generally	O
stores	O
its	O
data	O
in	O
a	O
MySQL-compatible	O
database	O
.	O
</s>
<s>
The	O
server	O
can	O
get	O
its	O
user	O
information	O
from	O
LDAP/Active	O
Directory	O
,	O
Unix	B-Application
user	O
accounts	O
or	O
the	O
MySQL	B-Application
database	O
.	O
</s>
<s>
Additional	O
gateways	O
for	O
the	O
IMAP	B-Protocol
,	O
POP3	B-Protocol
and	O
iCalendar/CalDAV	O
protocols	O
are	O
provided	O
.	O
</s>
<s>
Kopano	B-Protocol
WebApp	O
(	O
and	O
DeskApp	O
which	O
is	O
the	O
equivalent	O
stand-alone	O
application	O
)	O
are	O
full-featured	O
applications	O
which	O
include	O
support	O
for	O
mail	O
,	O
calendars	O
,	O
group	O
calendars	O
,	O
public	O
folders	O
and	O
many	O
more	O
functionalities	O
.	O
</s>
<s>
Kopano	B-Protocol
provides	O
several	O
plugins	O
such	O
as	O
Files	O
(	O
cloud	O
and	O
storage	O
access	O
within	O
WebApp	O
)	O
,	O
WebMeetings	O
(	O
video	O
conference	O
)	O
and	O
S/MIME	B-Protocol
(	O
which	O
allows	O
reading	O
and	O
sending	O
encrypted	O
email	O
)	O
.	O
</s>
<s>
Kopano	B-Protocol
is	O
available	O
as	O
a	O
freely	O
downloadable	O
community	O
edition	O
.	O
</s>
<s>
The	O
Kopano	B-Protocol
community	O
edition	O
includes	O
all	O
the	O
advanced	O
and	O
premium	O
features	O
such	O
as	O
WebMeetings	O
(	O
Video	O
Conferencing	O
)	O
,	O
Kopano	B-Protocol
Files	O
(	O
cloud	O
storage	O
access	O
)	O
and	O
the	O
S/MIME	B-Protocol
plugin	O
(	O
which	O
allows	O
sending	O
or	O
receiving	O
encrypted	O
email	O
)	O
.	O
</s>
<s>
Kopano	B-Protocol
is	O
also	O
available	O
as	O
a	O
paid-for	O
product	O
where	O
official	O
Kopano	B-Protocol
QA	O
tested	O
releases	O
are	O
provided	O
and	O
supported	O
directly	O
by	O
Kopano	B-Protocol
.	O
</s>
<s>
Kopano	B-Protocol
was	O
briefly	O
available	O
in	O
a	O
few	O
Linux	B-Application
distributions	O
.	O
</s>
