<s>
OpenSearch	B-Application
is	O
a	O
family	O
of	O
software	O
consisting	O
of	O
a	O
search	O
engine	O
(	O
also	O
named	O
OpenSearch	B-Application
)	O
,	O
and	O
OpenSearch	B-Application
Dashboards	O
,	O
a	O
data	O
visualization	O
dashboard	O
for	O
that	O
search	O
engine	O
.	O
</s>
<s>
The	O
software	O
started	O
in	O
2021	O
as	O
a	O
fork	B-Application
of	O
Elasticsearch	B-Application
and	O
Kibana	B-Application
,	O
with	O
development	O
led	O
by	O
Amazon	B-Application
Web	I-Application
Services	I-Application
.	O
</s>
<s>
The	O
project	O
was	O
created	O
after	O
Elastic	O
NV	O
changed	O
the	O
license	O
of	O
new	O
versions	O
of	O
this	O
software	O
away	O
from	O
the	O
open-source	B-Application
Apache	B-Application
License	I-Application
in	O
favour	O
of	O
the	O
Server	O
Side	O
Public	O
License	O
(	O
SSPL	O
)	O
.	O
</s>
<s>
(	O
Currently	O
only	O
Amazon	B-Application
Web	I-Application
Services	I-Application
has	O
maintainership	O
status	O
and	O
write	O
access	O
to	O
the	O
source	B-General_Concept
code	I-General_Concept
repositories	I-General_Concept
,	O
though	O
they	O
invite	O
pull	O
requests	O
from	O
anyone	O
.	O
)	O
</s>
<s>
Other	O
companies	O
such	O
as	O
Logz.io,	O
CrateDB	B-Application
,	O
Red	O
Hat	O
and	O
others	O
have	O
also	O
announced	O
an	O
interest	O
in	O
building	O
or	O
joining	O
a	O
community	O
to	O
continue	O
using	O
and	O
maintaining	O
this	O
open-source	B-Application
software	I-Application
.	O
</s>
<s>
OpenSearch	B-Application
is	O
a	O
Lucene-based	O
search	O
engine	O
that	O
started	O
as	O
a	O
fork	B-Application
of	O
version	O
7.10.2	O
of	O
the	O
Elasticsearch	B-Application
service	O
.	O
</s>
<s>
It	O
is	O
licensed	O
under	O
the	O
Apache	B-Application
License	I-Application
,	O
version	O
2	O
,	O
without	O
a	O
Contributor	O
License	O
Agreement	O
.	O
</s>
<s>
The	O
maintainers	O
have	O
made	O
a	O
commitment	O
to	O
remain	O
completely	O
compatible	O
with	O
Elasticsearch	B-Application
in	O
its	O
initial	O
versions	O
.	O
</s>
<s>
OpenSearch	B-Application
Dashboards	O
started	O
as	O
a	O
fork	B-Application
of	O
version	O
7.10.2	O
of	O
Elastic	O
's	O
Kibana	B-Application
software	O
,	O
and	O
is	O
also	O
under	O
the	O
Apache	B-Application
License	I-Application
,	O
version	O
2	O
.	O
</s>
