<s>
Synergy	B-Language
is	O
a	O
software	B-Application
application	I-Application
for	O
sharing	O
a	O
keyboard	O
and	O
mouse	O
between	O
multiple	O
computers	O
.	O
</s>
<s>
It	O
is	O
used	O
in	O
situations	O
where	O
several	O
PCs	B-Device
are	O
used	O
together	O
,	O
with	O
a	O
monitor	O
connected	O
to	O
each	O
,	O
but	O
are	O
to	O
be	O
controlled	O
by	O
one	O
user	O
.	O
</s>
<s>
The	O
user	O
needs	O
only	O
one	O
keyboard	O
and	O
mouse	O
on	O
the	O
desk	O
similar	O
to	O
a	O
KVM	B-Device
switch	I-Device
without	O
the	O
video	O
.	O
</s>
<s>
Partly	O
open	O
source	O
and	O
partly	O
closed	O
source	O
,	O
the	O
open	O
source	O
components	O
are	O
released	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
which	O
is	O
free	B-Application
software	I-Application
.	O
</s>
<s>
The	O
first	O
version	O
of	O
Synergy	B-Language
was	O
created	O
on	O
May	O
13	O
,	O
2001	O
,	O
by	O
Chris	B-Language
Schoeneman	I-Language
and	O
worked	O
with	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
only	O
.	O
</s>
<s>
Synergy	B-Language
now	O
supports	O
Windows	B-Application
,	O
macOS	B-Application
,	O
Linux	B-Application
,	O
and	O
other	O
Unix-like	O
operating	O
systems	O
.	O
</s>
<s>
The	O
clipboard	O
and	O
even	O
screensavers	B-General_Concept
can	O
be	O
synchronized	O
.	O
</s>
<s>
The	O
program	O
is	O
implemented	O
as	O
a	O
server	B-Application
which	O
defines	O
which	O
screen-edges	O
lead	O
to	O
which	O
machines	O
,	O
and	O
one	O
or	O
more	O
clients	B-Protocol
,	O
which	O
connect	O
to	O
the	O
server	B-Application
to	O
offer	O
the	O
use	O
of	O
their	O
desktops	O
.	O
</s>
<s>
The	O
keyboard	O
and	O
mouse	O
are	O
connected	O
to	O
the	O
server	B-Application
machine	O
.	O
</s>
<s>
In	O
July	O
2013	O
the	O
Defuse	O
Security	O
Group	O
reported	O
the	O
proprietary	O
encryption	O
used	O
in	O
Synergy	B-Language
1.6	O
to	O
be	O
insecure	O
and	O
released	O
an	O
exploit	O
which	O
could	O
be	O
used	O
to	O
passively	O
decrypt	O
the	O
commands	O
sent	O
to	O
the	O
Synergy	B-Language
1.6	O
clients	B-Protocol
.	O
</s>
<s>
TCP/IP	B-Protocol
communications	O
(	O
default	B-Protocol
port	I-Protocol
24800	O
)	O
are	O
used	O
to	O
send	O
mouse	O
,	O
keyboard	O
and	O
clipboard	O
events	O
between	O
computers	O
in	O
Synergy	B-Language
1	O
.	O
</s>
<s>
The	O
first	O
incarnation	O
of	O
Synergy	B-Language
was	O
CosmoSynergy	O
,	O
created	O
by	O
Richard	O
Lee	O
and	O
Adam	O
Feder	O
then	O
at	O
Cosmo	O
Software	O
,	O
Inc.	O
,	O
a	O
subsidiary	O
of	O
SGI	O
(	O
née	O
Silicon	O
Graphics	O
,	O
Inc	O
.	O
)	O
,	O
at	O
the	O
end	O
of	O
1996	O
.	O
</s>
<s>
They	O
wrote	O
it	O
,	O
and	O
Chris	B-Language
Schoeneman	I-Language
contributed	O
,	O
to	O
solve	O
a	O
problem	O
:	O
most	O
of	O
the	O
engineers	O
in	O
Cosmo	O
Software	O
had	O
both	O
an	O
Irix	O
and	O
a	O
Windows	B-Application
box	O
on	O
their	O
desks	O
and	O
switchboxes	B-Device
were	O
expensive	O
and	O
annoying	O
.	O
</s>
<s>
Synergy	B-Language
is	O
a	O
from-scratch	O
reimplementation	O
of	O
CosmoSynergy	O
.	O
</s>
<s>
Synergy+	O
was	O
created	O
in	O
2009	O
as	O
a	O
maintenance	O
fork	O
for	O
the	O
purpose	O
of	O
fixing	O
bugs	O
inherited	O
from	O
the	O
original	O
version	O
.	O
</s>
<s>
The	O
original	O
version	O
of	O
Synergy	B-Language
had	O
not	O
been	O
updated	O
for	O
a	O
notable	O
length	O
of	O
time	O
(	O
as	O
of	O
6	O
June	O
2010	O
,	O
the	O
latest	O
release	O
was	O
2	O
April	O
2006	O
)	O
.	O
</s>
<s>
There	O
was	O
never	O
official	O
confirmation	O
that	O
the	O
original	O
Synergy	B-Language
project	O
had	O
been	O
abandoned	O
;	O
however	O
,	O
there	O
was	O
public	O
discussion	O
providing	O
speculation	O
.	O
</s>
<s>
In	O
said	O
discussion	O
,	O
Chris	B-Language
Schoeneman	I-Language
(	O
the	O
creator	O
of	O
Synergy	B-Language
)	O
stated	O
that	O
instead	O
of	O
supporting	O
a	O
1.3.x	O
team	O
,	O
he	O
intends	O
on	O
releasing	O
version	O
2.0	O
of	O
Synergy	B-Language
,	O
and	O
publicly	O
announced	O
on	O
27	O
Aug	O
2008	O
that	O
he	O
has	O
been	O
making	O
progress	O
on	O
this	O
version	O
.	O
</s>
