<s>
The	O
following	O
is	O
a	O
list	B-Protocol
of	I-Protocol
web	I-Protocol
browsers	I-Protocol
that	O
are	O
notable	O
.	O
</s>
<s>
Gecko	B-Language
is	O
developed	O
by	O
the	B-Operating_System
Mozilla	I-Operating_System
Foundation	I-Operating_System
.	O
</s>
<s>
Goanna	B-Language
is	O
a	O
fork	B-Application
of	O
Gecko	B-Language
developed	O
by	O
Moonchild	O
Productions	O
.	O
</s>
<s>
Servo	B-Application
is	O
an	O
experimental	O
web	B-Application
browser	I-Application
layout	O
engine	O
being	O
developed	O
cooperatively	O
by	O
Mozilla	O
and	O
Samsung	O
.	O
</s>
<s>
In	O
2020	O
the	O
engine	O
's	O
development	O
was	O
transferred	O
to	O
the	O
Linux	B-Application
Foundation	O
.	O
</s>
<s>
Presto	B-Application
was	O
developed	O
by	O
Opera	B-Application
Software	O
for	O
use	O
in	O
Opera	B-Application
.	O
</s>
<s>
Development	O
stopped	O
as	O
Opera	B-Application
transitioned	O
to	O
Blink	B-Language
.	O
</s>
<s>
Trident	B-Application
is	O
developed	O
by	O
Microsoft	O
for	O
use	O
in	O
the	O
Windows	B-Application
versions	O
of	O
Internet	B-Protocol
Explorer	I-Protocol
4	I-Protocol
to	O
Internet	B-Application
Explorer	I-Application
11	I-Application
.	O
</s>
<s>
EdgeHTML	B-Application
is	O
the	O
engine	O
developed	O
by	O
Microsoft	O
for	O
Edge	B-Application
.	O
</s>
<s>
It	O
is	O
a	O
largely	O
rewritten	O
fork	B-Application
of	O
Trident	B-Application
with	O
all	O
legacy	O
code	O
removed	O
.	O
</s>
<s>
Tasman	B-Application
was	O
developed	O
by	O
Microsoft	O
for	O
use	O
in	O
Internet	B-Protocol
Explorer	I-Protocol
5	I-Protocol
for	I-Protocol
Macintosh	I-Protocol
.	O
</s>
<s>
KHTML	B-Language
is	O
developed	O
by	O
the	O
KDE	B-Application
project	O
.	O
</s>
<s>
WebKit	B-Language
is	O
a	O
fork	B-Application
of	O
KHTML	B-Language
by	O
Apple	O
Inc	O
.	O
used	O
in	O
Apple	B-Application
Safari	I-Application
,	O
and	O
formerly	O
in	O
Chromium	B-Language
and	O
Google	B-Application
Chrome	I-Application
.	O
</s>
<s>
Blink	B-Language
is	O
a	O
2013	O
fork	B-Application
of	O
WebKit	B-Language
's	O
WebCore	B-Language
component	O
by	O
Google	O
used	O
in	O
Chromium	B-Language
,	O
Google	B-Application
Chrome	I-Application
,	O
Microsoft	B-Application
Edge	I-Application
,	O
Opera	B-Application
,	O
and	O
Vivaldi	B-Language
.	O
</s>
<s>
Other	O
software	O
publishers	O
have	O
built	O
browsers	B-Application
and	O
other	O
products	O
around	O
Microsoft	O
's	O
Trident	B-Application
engine	O
.	O
</s>
<s>
The	O
following	O
browsers	B-Application
are	O
all	O
based	O
on	O
that	O
rendering	O
engine	O
:	O
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Browser	B-Application
(	O
or	O
partnership	O
browsers	B-Application
e.g.	O
</s>
<s>
"	O
AT&T	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Browser	B-Application
"	O
;	O
"	O
Verizon	B-Application
Yahoo	B-Application
!	I-Application
</s>
<s>
Browser	B-Application
"	O
;	O
"	O
BT	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Browser	B-Application
"	O
,	O
etc	O
.	O
)	O
</s>
<s>
Browsers	B-Application
that	O
use	O
both	O
Trident	B-Application
and	O
Gecko	B-Language
include	O
:	O
</s>
<s>
Browsers	B-Application
that	O
can	O
use	O
Trident	B-Application
,	O
Gecko	B-Language
and	O
Blink	B-Language
include	O
:	O
</s>
<s>
Status	O
Browser	B-Application
Aloha	O
Browser	B-Application
(	O
iOS	O
and	O
Android	B-Application
)	O
experimental	O
Amazon	B-General_Concept
Kindle	I-General_Concept
NetFront	B-Operating_System
Browser	I-Operating_System
discontinued	O
Arora	B-Language
discontinued	O
BOLT	B-Protocol
browser	I-Protocol
Google	B-Application
Chrome	I-Application
for	O
iOS	O
Dolphin	B-Application
Browser	I-Application
(	O
Android	B-Application
and	O
Bada	O
)	O
discontinued	O
Dooble	B-Language
(	O
qtwebkit	O
version	O
discontinued	O
)	O
(	O
up	O
to	O
Version	O
1.56	O
)	O
DuckDuckGo	O
for	O
Mac	O
Firefox	B-Application
for	I-Application
iOS	I-Application
discontinued	O
Flock	B-Protocol
(	O
version	O
3.0	O
and	O
above	O
)	O
GNOME	B-Language
Web	I-Language
(	O
Epiphany	B-Language
)	O
iCab	B-Operating_System
(	O
version	O
4	O
uses	O
WebKit	B-Language
;	O
earlier	O
versions	O
used	O
its	O
own	O
rendering	O
engine	O
)	O
discontinued	O
Iris	B-Operating_System
Browser	I-Operating_System
Konqueror	B-Application
(	O
version	O
4	O
can	O
use	O
WebKit	B-Language
as	O
an	O
alternative	O
to	O
its	O
native	O
KHTML	B-Language
)	O
Maxthon	B-Application
(	O
version	O
3.0	O
to	O
5.0	O
.	O
</s>
<s>
Browsers	B-Application
created	O
for	O
enhancements	O
of	O
specific	O
browsing	O
activities	O
.	O
</s>
<s>
Songbird	B-Application
(	O
browser	B-Application
with	O
advanced	O
audio	O
streaming	O
features	O
and	O
built-in	O
media	O
player	O
with	O
library	O
.	O
)	O
</s>
<s>
Mosaic	B-Application
was	O
the	O
first	O
widely	O
used	O
web	B-Application
browser	I-Application
.	O
</s>
<s>
The	O
National	B-General_Concept
Center	I-General_Concept
for	I-General_Concept
Supercomputing	I-General_Concept
Applications	I-General_Concept
(	O
NCSA	O
)	O
licensed	O
the	O
technology	O
and	O
many	O
companies	O
built	O
their	O
own	O
web	B-Application
browser	I-Application
on	O
Mosaic	B-Application
.	O
</s>
<s>
The	O
best	O
known	O
are	O
the	O
first	O
versions	O
of	O
Internet	B-Application
Explorer	I-Application
and	O
Netscape	B-Protocol
.	O
</s>
<s>
NetSurf	B-Application
(	O
an	O
open	O
source	O
web	B-Application
browser	I-Application
originally	O
for	O
RISC	B-Operating_System
OS	I-Operating_System
and	O
GTK	O
,	O
e.g.	O
</s>
