<s>
Briar	B-Protocol
is	O
an	O
open-source	B-Application
software	I-Application
communication	O
technology	O
,	O
intended	O
to	O
provide	O
secure	O
and	O
resilient	O
peer-to-peer	O
communications	O
with	O
no	O
centralized	O
servers	O
and	O
minimal	O
reliance	O
on	O
external	O
infrastructure	O
.	O
</s>
<s>
Messages	O
can	O
be	O
transmitted	O
through	O
Bluetooth	B-Protocol
,	O
Wi-Fi	O
,	O
over	O
the	O
internet	O
via	O
Tor	B-Application
or	O
removable	O
storage	O
,	O
such	O
as	O
USB	O
sticks	O
.	O
</s>
<s>
The	O
initial	O
target	O
audience	O
for	O
Briar	B-Protocol
includes	O
"	O
activists	O
,	O
journalists	O
and	O
civil	O
society	O
"	O
with	O
plans	O
to	O
make	O
the	O
system	O
"	O
simple	O
enough	O
to	O
help	O
anyone	O
keep	O
their	O
data	O
safe.	O
"	O
</s>
<s>
Ultimately	O
,	O
the	O
developers	O
aim	O
to	O
create	O
a	O
system	O
which	O
is	O
"	O
as	O
simple	O
to	O
use	O
as	O
WhatsApp	B-Application
,	O
as	O
secure	O
as	O
PGP	B-Application
,	O
and	O
that	O
keeps	O
working	O
if	O
somebody	O
breaks	O
the	O
Internet.	O
"	O
</s>
<s>
It	O
is	O
possible	O
for	O
a	O
mobile	O
phone	O
to	O
download	O
Briar	B-Protocol
from	O
another	O
mobile	O
which	O
already	O
has	O
Briar	B-Protocol
installed	O
.	O
</s>
<s>
Briar	B-Protocol
's	O
source	O
code	O
is	O
published	O
as	O
free	B-Application
software	I-Application
and	O
the	O
mobile	O
app	O
is	O
distributed	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
GPL-3.0-or-later	I-License
license	O
,	O
while	O
the	O
desktop	O
version	O
is	O
released	O
under	O
the	O
Affero	O
General	B-License
Public	I-License
License	I-License
.	O
</s>
<s>
Briar	B-Protocol
Desktop	O
runs	O
on	O
Windows	O
,	O
macOS	O
and	O
Linux	O
.	O
</s>
<s>
Briar	B-Protocol
Desktop	O
will	O
also	O
run	O
on	O
true	O
Linux	O
(	O
non-Android	O
)	O
mobiles	O
,	O
running	O
operating	O
systems	O
like	O
Manjaro	B-Application
,	O
PureOS	B-Language
and	O
postmarketOS	B-Application
,	O
once	O
it	O
has	O
been	O
adapted	O
to	O
mobile	O
form-factors	O
.	O
</s>
<s>
Briar	B-Protocol
was	O
audited	O
by	O
Cure53	O
and	O
spoken	O
highly	O
of	O
in	O
a	O
report	O
delivered	O
20	O
March	O
2017	O
,	O
and	O
was	O
recommended	O
to	O
be	O
given	O
a	O
second	O
audit	O
after	O
development	O
completes	O
.	O
</s>
<s>
Briar	B-Protocol
uses	O
the	O
Bramble	O
protocol	B-Protocol
suite	I-Protocol
(	O
Bramble	O
Handshake	O
Protocol	O
,	O
Bramble	O
QR	O
Code	O
Protocol	O
,	O
Bramble	O
Rendezvous	O
Protocol	O
,	O
Bramble	O
Synchronisation	O
Protocol	O
,	O
Bramble	O
Transport	O
Protocol	O
)	O
that	O
is	O
specifically	O
designed	O
for	O
delay-tolerant	B-Protocol
networks	I-Protocol
.	O
</s>
<s>
As	O
of	O
January	O
2023	O
,	O
these	O
protocols	O
are	O
not	O
implemented	O
by	O
other	O
messengers	O
;	O
Briar	B-Protocol
can	O
only	O
talk	O
to	O
Briar	B-Protocol
.	O
</s>
