<s>
KeePassX	B-Application
is	O
a	O
free	B-License
and	I-License
open-source	I-License
password	O
manager	O
.	O
</s>
<s>
It	O
started	O
as	O
a	O
Linux	B-Application
port	O
of	O
KeePass	B-Language
,	O
which	O
was	O
at	O
that	O
time	O
an	O
open-source	B-Application
but	O
Windows-only	O
password	O
manager	O
.	O
</s>
<s>
Both	O
are	O
now	O
cross	O
platform	O
,	O
with	O
KeePassX	B-Application
using	O
Qt	B-Language
libraries	I-Language
and	O
recent	O
versions	O
of	O
KeePass	B-Language
using	O
.NET	B-Application
/	I-Application
Mono	I-Application
.	O
</s>
<s>
It	O
is	O
built	O
using	O
version	O
5	O
of	O
the	O
Qt	B-Language
toolkit	I-Language
,	O
making	O
it	O
a	O
multi-platform	O
application	O
,	O
which	O
can	O
be	O
run	O
on	O
Linux	B-Application
,	O
Windows	O
,	O
and	O
macOS	B-Application
.	O
</s>
<s>
KeePassX	B-Application
uses	O
the	O
KeePass	B-Language
2	O
(	O
.kdbx	O
)	O
password	O
database	O
format	O
as	O
the	O
native	O
format	O
.	O
</s>
<s>
It	O
can	O
also	O
import	O
(	O
and	O
convert	O
)	O
the	O
older	O
KeePass	B-Language
1	O
(	O
.kdb	O
)	O
databases	O
.	O
</s>
<s>
As	O
of	O
December	O
2021	O
,	O
KeePassX	B-Application
is	O
no	O
longer	O
actively	O
maintained	O
.	O
</s>
<s>
There	O
is	O
a	O
community	O
fork	O
of	O
KeePassX	B-Application
,	O
called	O
KeePassXC	B-Language
.	O
</s>
