<s>
Element	O
(	O
formerly	O
Riot	O
and	O
Vector	O
)	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
software	I-License
instant	B-Application
messaging	I-Application
client	O
implementing	O
the	O
Matrix	B-Protocol
protocol	I-Protocol
.	O
</s>
<s>
Element	O
supports	O
end-to-end	O
encryption	O
,	O
private	O
and	O
public	O
groups	O
,	O
sharing	O
of	O
files	O
between	O
users	O
,	O
voice	O
and	O
video	B-Application
calls	I-Application
,	O
and	O
other	O
collaborative	O
features	O
with	O
help	O
of	O
bots	O
and	O
widgets	O
.	O
</s>
<s>
It	O
is	O
available	O
as	O
a	O
web	B-Application
application	I-Application
that	O
can	O
be	O
accessed	O
through	O
any	O
modern	O
web	B-Application
browser	I-Application
,	O
as	O
desktop	O
apps	O
for	O
Windows	B-Application
,	O
Mac	B-Application
,	O
and	O
Linux	B-Application
,	O
and	O
as	O
a	O
mobile	O
app	O
for	O
Android	B-Application
and	O
iOS	B-Application
.	O
</s>
<s>
In	O
2016	O
the	O
first	O
implementation	O
of	O
the	O
Matrix	B-Protocol
end-to-end	O
encryption	O
was	O
implemented	O
and	O
rolled	O
out	O
as	O
a	O
beta	O
to	O
users	O
.	O
</s>
<s>
In	O
April	O
2019	O
,	O
a	O
new	O
application	O
was	O
released	O
on	O
the	O
Google	B-Application
Play	I-Application
Store	I-Application
in	O
response	O
to	O
cryptographic	O
keys	O
used	O
to	O
sign	O
the	O
Riot	O
Android	B-Application
app	O
being	O
compromised	O
.	O
</s>
<s>
In	O
January	O
2021	O
,	O
Element	O
was	O
briefly	O
suspended	O
from	O
Google	B-Application
Play	I-Application
Store	I-Application
in	O
response	O
to	O
a	O
report	O
of	O
user-submitted	O
abusive	O
content	O
on	O
Element	O
's	O
default	O
server	O
,	O
matrix.org	B-Protocol
.	O
</s>
<s>
Element	O
is	O
built	O
with	O
the	O
Matrix	B-Protocol
React	B-Application
SDK	O
,	O
which	O
is	O
a	O
React-based	O
software	B-Application
development	I-Application
kit	I-Application
to	O
ease	O
the	O
development	O
of	O
Matrix	B-Protocol
clients	O
.	O
</s>
<s>
Element	O
is	O
reliant	O
on	O
web	O
technologies	O
and	O
uses	O
Electron	B-Operating_System
for	O
bundling	O
the	O
app	O
for	O
Windows	B-Application
,	O
macOS	B-Application
and	O
Linux	B-Application
.	O
</s>
<s>
The	O
Android	B-Application
and	O
iOS	B-Application
clients	O
are	O
developed	O
and	O
distributed	O
with	O
their	O
respective	O
platform	O
tools	O
.	O
</s>
<s>
On	O
Android	B-Application
the	O
app	O
is	O
available	O
both	O
in	O
the	O
Google	B-Application
Play	I-Application
Store	I-Application
and	O
the	O
free-software	O
only	O
F-Droid	B-Application
Archives	O
,	O
with	O
minor	O
modifications	O
.	O
</s>
<s>
For	O
instance	O
,	O
the	O
F-Droid	B-Application
version	O
does	O
not	O
contain	O
the	O
proprietary	O
Google	O
Cloud	O
Messaging	O
plug-in	O
.	O
</s>
<s>
Element	O
is	O
able	O
to	O
bridge	O
other	O
communications	O
into	O
the	O
app	O
via	O
Matrix	B-Protocol
,	O
including	O
IRC	B-Protocol
,	O
Slack	B-Protocol
,	O
Telegram	B-Application
,	O
Jitsi	O
Meet	O
and	O
others	O
.	O
</s>
<s>
Also	O
,	O
it	O
integrates	O
voice	O
and	O
video	O
peer-to-peer	O
and	O
group	O
chats	O
via	O
WebRTC	B-Protocol
.	O
</s>
<s>
Media	O
compared	O
Element	O
to	O
Slack	B-Protocol
,	O
WhatsApp	B-Application
and	O
other	O
instant	B-Application
messaging	I-Application
clients	O
.	O
</s>
<s>
In	O
2017	O
,	O
German	O
computer	O
magazine	O
Golem.de	O
called	O
Element	O
(	O
then	O
Riot	O
)	O
and	O
Matrix	B-Protocol
server	O
"	O
mature	O
"	O
and	O
"	O
feature-rich	O
"	O
,	O
but	O
criticized	O
its	O
key	O
authentication	O
at	O
the	O
time	O
to	O
be	O
not	O
user-friendly	O
for	O
communicatees	O
owning	O
multiple	O
devices	O
.	O
</s>
