<s>
Conversations	O
is	O
a	O
free	B-Application
software	I-Application
,	O
instant	B-Application
messaging	I-Application
client	O
application	O
software	O
for	O
Android	B-Application
.	O
</s>
<s>
It	O
is	O
largely	O
based	O
on	O
recognized	O
open	O
standards	O
such	O
as	O
the	O
Extensible	B-Protocol
Messaging	I-Protocol
and	I-Protocol
Presence	I-Protocol
Protocol	I-Protocol
(	O
XMPP	B-Protocol
)	O
and	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
(	O
TLS	B-Protocol
)	O
.	O
</s>
<s>
The	O
development	O
focus	O
is	O
on	O
secure	O
communication	O
and	O
implementation	O
of	O
XMPP	B-Protocol
extensions	O
that	O
are	O
important	O
for	O
mobile	O
use	O
.	O
</s>
<s>
It	O
enjoys	O
recognition	O
as	O
a	O
serious	O
attempt	O
to	O
raise	O
the	O
mass	O
suitability	O
of	O
XMPP-based	O
messaging	O
to	O
a	O
competitive	O
level	O
.	O
</s>
<s>
The	O
source	O
code	O
of	O
the	O
software	O
is	O
maintained	O
at	O
GitHub	B-Application
,	O
and	O
is	O
subject	O
to	O
the	O
terms	O
of	O
the	O
GPL-3.0-only	B-License
license	O
.	O
</s>
<s>
The	O
application	O
can	O
be	O
installed	O
for	O
free	O
(	O
or	O
with	O
donations	O
)	O
using	O
F-Droid	B-Application
,	O
or	O
for	O
a	O
fee	O
in	O
the	O
Google	B-Application
Play	I-Application
store	I-Application
.	O
</s>
<s>
Conversations	O
includes	O
optional	O
end-to-end	O
encryption	O
(	O
OpenPGP	B-Application
or	O
OMEMO	B-Application
)	O
,	O
and	O
in-transit	O
encryption	O
(	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
)	O
.	O
</s>
<s>
Conversations	O
allows	O
users	O
to	O
have	O
multiple	O
client	O
devices	O
(	O
endpoints	O
)	O
logged	O
into	O
an	O
account	O
simultaneously	O
(	O
through	O
XMPP	B-Protocol
)	O
,	O
and	O
also	O
delivers	O
messages	O
to	O
multiple	O
client	O
devices	O
(	O
synchronization	O
)	O
using	O
the	O
protocol	O
extension	O
"	O
Message	O
Carbons	O
"	O
(	O
"	O
carbon	O
copies	O
"	O
,	O
XEP-0280	O
)	O
.	O
</s>
<s>
As	O
an	O
XMPP	B-Protocol
client	O
,	O
Conversations	O
can	O
exchange	O
messages	O
with	O
other	O
,	O
different	O
XMPP	B-Protocol
client	O
software	O
,	O
in	O
principle	O
,	O
and	O
is	O
also	O
not	O
tied	O
to	O
a	O
particular	O
vendor	O
's	O
server	O
infrastructure	O
.	O
</s>
<s>
Conversations	O
handles	O
many	O
XMPP	B-Protocol
extension	O
protocols	O
(	O
XEP	O
,	O
official	O
extensions	O
of	O
XMPP	B-Protocol
)	O
.	O
</s>
<s>
Conversations	O
was	O
added	O
to	O
Google	B-Application
Play	I-Application
later	O
in	O
spring	O
2014	O
,	O
and	O
to	O
the	O
alternative	O
Android	B-Application
software	I-Application
repository	O
F-Droid	B-Application
with	O
version	O
0.1.3	O
on	O
April	O
6	O
,	O
2014	O
.	O
</s>
<s>
Since	O
version	O
0.2	O
,	O
released	O
on	O
May	O
12	O
,	O
image	O
messages	O
(	O
file	O
transfers	O
,	O
in	O
plain	O
text	O
or	O
OpenPGP-encrypted	O
)	O
are	O
supported	O
,	O
from	O
version	O
0.4	O
(	O
June	O
30	O
)	O
also	O
OTR-encrypted	O
.	O
</s>
<s>
This	O
produced	O
drafts	O
of	O
a	O
new	O
end-to-end	O
encryption	O
standard	O
(	O
OMEMO	B-Application
)	O
,	O
which	O
were	O
submitted	O
to	O
the	O
XMPP	B-Protocol
Standards	O
Foundation	O
(	O
XSF	O
)	O
for	O
standardization	O
.	O
</s>
<s>
Furthermore	O
,	O
OMEMO	B-Application
is	O
now	O
enabled	O
by	O
default	O
in	O
individual	O
chats	O
and	O
private	O
group	O
chats	O
.	O
</s>
<s>
Version	O
2.3.0	O
introduced	O
support	O
for	O
TLS	B-Protocol
1.3	O
in	O
September	O
2018	O
.	O
</s>
<s>
The	O
offshoot	O
instant	B-Application
messenger	I-Application
,	O
Quicksy	O
,	O
was	O
also	O
created	O
by	O
Daniel	O
Gultsch	O
.	O
</s>
<s>
This	O
is	O
intended	O
to	O
lower	O
the	O
barrier	O
to	O
entry	O
into	O
the	O
XMPP	B-Protocol
(	O
Jabber	B-Protocol
)	O
network	O
.	O
</s>
<s>
Quicksy	O
users	O
can	O
also	O
communicate	O
with	O
XMPP	B-Protocol
users	O
on	O
other	O
hosts	O
.	O
</s>
<s>
The	B-Operating_System
Free	I-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
includes	O
Conversations	O
in	O
their	O
software	O
directory	O
.	O
</s>
<s>
In	O
an	O
analysis	O
of	O
Conversations	O
and	O
Xabber	O
apps	O
,	O
researchers	O
found	O
"	O
forensic	O
artefacts	O
"	O
could	O
be	O
found	O
on	O
an	O
Android	B-Application
device	O
including	O
local	O
user	O
,	O
contacts	O
and	O
body	O
of	O
messages	O
sent	O
or	O
received	O
using	O
the	O
app	O
,	O
as	O
plaintext	O
in	O
the	O
main	O
database	O
maintained	O
by	O
the	O
app	O
.	O
</s>
<s>
In	O
a	O
2020	O
review	O
,	O
Decentralize	O
Today	O
said	O
"	O
XMPP	B-Protocol
andConversations	O
has	O
the	O
potential	O
to	O
be	O
an	O
excellent	O
and	O
super	O
secure	O
messenger	O
if	O
you	O
host	O
it	O
yourself	O
,	O
"	O
but	O
"	O
problems	O
could	O
emerge	O
when	O
you	O
use	O
XMPP	B-Protocol
with	O
contacts	O
who	O
are	O
on	O
different	O
servers.	O
"	O
</s>
<s>
Anticapitalist	O
webhost	O
company	O
,	O
Autistici	O
,	O
wrote	O
detailed	O
setup	O
instructions	O
for	O
Conversations	O
for	O
their	O
XMPP	B-Protocol
service	O
.	O
</s>
<s>
CopperheadOS	B-Application
developers	O
recommend	O
Conversations	O
.	O
</s>
