<s>
Fisheye	B-Protocol
is	O
a	O
revision-control	B-Architecture
browser	O
and	O
search	O
engine	O
owned	O
by	O
Atlassian	O
,	O
Inc	O
.	O
</s>
<s>
Although	O
Fisheye	B-Protocol
is	O
a	O
commercial	O
product	O
,	O
it	O
is	O
freely	O
available	O
to	O
open	B-Application
source	I-Application
projects	O
and	O
non-profit	O
institutions	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
advanced	O
search	O
and	O
diff	B-Application
capabilities	O
,	O
it	O
provides	O
:	O
</s>
<s>
Atlassian	O
approves	O
free	O
licenses	O
for	O
community	O
and	O
open-source	B-Application
installations	O
under	O
certain	O
conditions	O
.	O
</s>
<s>
Many	O
major	O
open	B-Application
source	I-Application
projects	O
use	O
Fisheye	B-Protocol
to	O
provide	O
a	O
front-end	O
for	O
the	O
source	O
code	O
repository	O
:	O
</s>
<s>
Atlassian	O
provides	O
free	O
licences	O
of	O
Fisheye	B-Protocol
and	O
Crucible	B-General_Concept
for	O
open-source	B-Application
projects	O
.	O
</s>
<s>
Fisheye	B-Protocol
supported	O
integration	O
with	O
the	O
following	O
revision	B-Architecture
control	I-Architecture
systems	I-Architecture
:	O
</s>
<s>
Due	O
to	O
the	O
resource-based	O
URLs	O
,	O
it	O
is	O
possible	O
to	O
integrate	O
Fisheye	B-Protocol
with	O
different	O
issue	B-Application
and	O
bug	B-Application
tracking	I-Application
systems	I-Application
.	O
</s>
<s>
It	O
also	O
provides	O
a	O
REST	O
and	O
XML-RPC	B-Protocol
API	B-General_Concept
.	O
</s>
<s>
Fisheye	B-Protocol
also	O
integrates	O
with	O
IDEs	B-Application
like	O
IntelliJ	B-Language
IDEA	I-Language
via	O
the	O
Atlassian	O
IDE	O
Connector	O
.	O
</s>
