<s>
Double	B-Language
Commander	I-Language
is	O
a	O
free	B-Application
and	O
open-source	B-Application
multi-platform	O
two-panel	O
orthodox	O
file	B-Application
manager	I-Application
that	O
is	O
inspired	O
by	O
the	O
Microsoft	O
Windows-only	O
Total	B-Language
Commander	I-Language
.	O
</s>
<s>
Directories	O
(	O
all	O
or	O
only	O
selected	O
)	O
can	O
be	O
compared	O
and	O
synchronized	B-Application
both	O
symmetrically	O
(	O
two-way	O
)	O
and	O
asymmetrically	O
(	O
one-way	O
)	O
.	O
</s>
<s>
Two	O
similar	O
panels	O
with	O
an	O
optional	O
tree	O
view	O
panel	O
,	O
synchronized	B-Application
with	O
the	O
others	O
.	O
</s>
<s>
Various	O
search	O
options	O
include	O
regular	B-Language
expressions	I-Language
and	O
search	O
for	O
duplicates	O
.	O
</s>
<s>
HTML	B-Language
files	I-Language
are	O
displayed	O
in	O
a	O
simple	O
offline	O
browser	O
,	O
provided	O
by	O
an	O
attached	O
plugin	O
.	O
</s>
