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The following companies and projects are powered by Apache Calcite.

![Companies and projects]({{ site.baseurl }}/img/powered-by.png)

* TOC
{:toc}

Is your company or project powered by Calcite?
[Add it to this page](https://github.com/apache/calcite/blob/master/site/_docs/powered_by.md)
and then use the "powered by Apache Calcite" logo
([140 px]({{ site.baseurl }}/img/pb-calcite-140.png)
or [240 px]({{ site.baseurl }}/img/pb-calcite-240.png))
on your site.


![Powered By]({{ site.baseurl }}/img/pb-calcite-240.png)

### Apache Apex

<a href="https://apex.apache.org">Apache Apex</a>
uses Calcite for parsing streaming SQL and query optimization.

### Apache Drill

<a href="https://drill.apache.org">Apache Drill</a>
uses Calcite for SQL parsing and query optimization.

### Apache Flink

<a href="https://flink.apache.org">Apache Flink</a>
uses Calcite for parsing both regular and streaming SQL,
and for query optimization (under development).

### Apache Hive

<a href="https://hive.apache.org">Apache Hive</a>
uses Calcite for cost-based query optimization.

### Apache Kylin

<a href="https://kylin.apache.org">Apache Kylin</a>
uses Calcite for SQL parsing and query optimization.

### Apache Phoenix

<a href="https://phoenix.apache.org">Apache Phoenix</a>
uses Calcite for SQL parsing and query optimization (under development),
and also uses Avatica for its remote JDBC driver.

### Apache Samza

<a href="https://github.com/milinda/samza-sql">SamzaSQL</a>,
an extension to
<a href="https://samza.apache.org">Apache Samza</a>,
uses Calcite for parsing streaming SQL and query optimization.

### Apache Storm

<a href="https://storm.apache.org">Apache Storm</a>
uses Calcite for parsing streaming SQL and query optimization.

### AthenaX

<a href="https://www.uber.com/">Uber</a>'s SQL-based streaming analytics platform
<a href="https://github.com/uber/AthenaX/">AthenaX</a>
uses Calcite for SQL parsing and query optimization.

### Cascading

<a href="https://github.com/Cascading/lingual">Lingual</a>
component provides a SQL interface to
<a href="https://www.cascading.org/">Cascading</a>.

### Dremio

<a href="https://www.dremio.com">Dremio</a>
uses Calcite for SQL parsing and cost-based query optimization.

### MapD

<a href="https://www.mapd.com">MapD</a>
is a GPU-powered database and visual analytics platform for
interactive exploration of large datasets.

### Qubole Quark

[Quark](https://github.com/qubole/quark)
is a data virtualization engine over analytic databases.
It uses Calcite to transparently rewrite queries to use materialized views.

### SQL-Gremlin

<a href="https://github.com/twilmes/sql-gremlin">SQL-Gremlin</a>
is a SQL interface to a
<a href="https://tinkerpop.apache.org/">Apache TinkerPop</a>-enabled
graph database.
