<s>
The	O
Application	B-Protocol
Configuration	I-Protocol
Access	I-Protocol
Protocol	I-Protocol
(	O
ACAP	O
)	O
is	O
a	O
protocol	O
for	O
storing	O
and	O
synchronizing	O
general	O
configuration	O
and	O
preference	O
data	O
.	O
</s>
<s>
It	O
was	O
originally	O
developed	O
so	O
that	O
IMAP	B-Protocol
clients	O
can	O
easily	O
access	O
address	B-Operating_System
books	I-Operating_System
,	O
user	O
options	O
,	O
and	O
other	O
data	O
on	O
a	O
central	O
server	O
and	O
be	O
kept	O
in	O
synch	O
across	O
all	O
clients	O
.	O
</s>
<s>
ACAP	O
is	O
in	O
use	O
by	O
at	O
least	O
four	O
clients	O
and	O
three	O
servers	O
to	O
varying	O
degrees	O
,	O
but	O
it	O
has	O
never	O
achieved	O
the	O
popularity	O
of	O
Lightweight	B-Protocol
Directory	I-Protocol
Access	I-Protocol
Protocol	I-Protocol
or	O
SyncML	B-General_Concept
.	O
</s>
<s>
Unlike	O
LDAP	B-Protocol
,	O
ACAP	O
was	O
designed	O
for	O
frequent	O
writes	O
,	O
disconnected	O
mode	O
access	O
(	O
meaning	O
clients	O
can	O
go	O
offline	O
and	O
then	O
resynchronize	O
later	O
)	O
,	O
and	O
so	O
on	O
.	O
</s>
<s>
The	O
IETF	O
ACAP	O
Working	O
Group	O
ceased	O
activity	O
in	O
April	O
2004	O
,	O
having	O
released	O
two	O
RFCs	O
,	O
(	O
"	O
ACAP	O
—	O
Application	B-Protocol
Configuration	I-Protocol
Access	I-Protocol
Protocol	I-Protocol
"	O
)	O
and	O
(	O
"	O
Anonymous	O
SASL	O
Mechanism	O
"	O
)	O
.	O
</s>
