<s>
LiteSpeed	B-Protocol
Web	I-Protocol
Server	I-Protocol
(	O
LSWS	O
)	O
is	O
proprietary	B-Application
web	B-Application
server	I-Application
software	O
.	O
</s>
<s>
It	O
is	O
the	O
4th	O
most	O
popular	O
web	B-Application
server	I-Application
,	O
estimated	O
to	O
be	O
used	O
by	O
10%	O
of	O
websites	O
as	O
of	O
July	O
2021	O
.	O
</s>
<s>
LSWS	O
is	O
developed	O
by	O
privately	O
held	O
LiteSpeed	B-Protocol
Technologies	I-Protocol
.	O
</s>
<s>
The	O
software	O
uses	O
the	O
same	O
configuration	O
format	O
as	O
Apache	B-Application
HTTP	I-Application
Server	I-Application
and	O
is	O
compatible	O
with	O
most	O
Apache	B-Application
features	O
.	O
</s>
<s>
An	O
open	B-Application
source	I-Application
variant	O
is	O
also	O
available	O
.	O
</s>
<s>
LSWS	O
was	O
released	O
in	O
2003	O
,	O
and	O
in	O
August	O
2008	O
it	O
became	O
the	O
16th	O
most	O
popular	O
web	B-Application
server	I-Application
.	O
</s>
<s>
In	O
November	O
2016	O
,	O
LiteSpeed	B-Protocol
's	O
market	O
share	O
grew	O
from	O
0.39	O
%	O
to	O
3.29	O
%	O
,	O
increasing	O
its	O
position	O
from	O
10th	O
to	O
4th	O
most	O
popular	O
web	B-Application
server	I-Application
according	O
to	O
Netcraft	O
.	O
</s>
<s>
In	O
2017	O
,	O
a	O
team	O
from	O
Hong	O
Kong	O
Polytechnic	O
University	O
found	O
it	O
to	O
be	O
one	O
of	O
the	O
six	O
most	O
popular	O
web	B-Application
servers	I-Application
,	O
and	O
it	O
was	O
estimated	O
by	O
a	O
team	O
at	O
RWTH	O
Aachen	O
University	O
to	O
be	O
running	O
9.2	O
%	O
of	O
all	O
HTTP/2	B-Protocol
-enabled	O
websites	O
.	O
</s>
<s>
As	O
of	O
April	O
2020	O
,	O
LSWS	O
was	O
used	O
by	O
69.3	O
%	O
of	O
websites	O
using	O
QUIC	B-Protocol
and	O
47.6	O
%	O
of	O
websites	O
using	O
HTTP/3	B-Protocol
.	O
</s>
<s>
According	O
to	O
latest	O
Netcraft	O
web	B-Application
server	I-Application
survey	O
,	O
LiteSpeed	B-Protocol
never	O
grew	O
upon	O
3%	O
of	O
global	O
market	O
shares	O
.	O
</s>
<s>
LSWS	O
is	O
compatible	O
with	O
commonly-used	O
Apache	B-Application
features	O
,	O
including	O
mod_rewrite	O
,	O
.htaccess	B-Protocol
,	O
and	O
mod_security	O
.	O
</s>
<s>
LSWS	O
can	O
load	O
Apache	B-Application
configuration	O
files	O
directly	O
and	O
works	O
as	O
a	O
drop-in	O
replacement	O
for	O
Apache	B-Application
while	O
fully	O
integrating	O
with	O
popular	O
control	O
panels	O
.	O
</s>
<s>
LSWS	O
replaces	O
all	O
Apache	B-Application
functions	O
,	O
but	O
uses	O
an	O
event	O
driven	O
approach	O
to	O
handle	O
requests	O
.	O
</s>
<s>
LiteSpeed	B-Protocol
Technologies	I-Protocol
was	O
founded	O
in	O
early	O
2002	O
by	O
a	O
team	O
of	O
engineers	O
led	O
by	O
George	O
Wang	O
.	O
</s>
<s>
On	O
July	O
1	O
,	O
2003	O
,	O
LiteSpeed	B-Protocol
Web	I-Protocol
Server	I-Protocol
was	O
officially	O
released	O
as	O
a	O
full-featured	O
web	B-Application
server	I-Application
.	O
</s>
<s>
In	O
2007	O
,	O
LiteSpeed	B-Protocol
Web	I-Protocol
Server	I-Protocol
became	O
LiteSpeed	B-Protocol
Web	I-Protocol
Server	I-Protocol
Enterprise	O
and	O
was	O
configured	O
to	O
be	O
an	O
Apache	B-Application
drop-in	O
replacement	O
.	O
</s>
<s>
In	O
that	O
same	O
year	O
,	O
the	O
web	B-Application
server	I-Application
integrated	O
with	O
cPanel	B-Protocol
,	O
DirectAdmin	B-Protocol
,	O
and	O
Plesk	B-Language
.	O
</s>
<s>
LiteSpeed	B-Protocol
Web	I-Protocol
Server	I-Protocol
officially	O
began	O
supporting	O
HTTP/2	B-Protocol
in	O
2015	O
with	O
version	O
5.0	O
,	O
and	O
also	O
released	O
LSCache	O
(	O
cache	O
plugin	O
for	O
WordPress	O
)	O
with	O
ESI	O
in	O
version	O
5.0.10	O
.	O
</s>
<s>
In	O
2017	O
,	O
LSWS	O
released	O
QUIC	B-Protocol
support	O
.	O
</s>
<s>
In	O
July	O
2019	O
,	O
LSWS	O
announced	O
support	O
for	O
HTTP/3	B-Protocol
.	O
</s>
