# Custom integrations with unsupported data sources

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Examples of how to integrate Kotlin DataFrame with other data frameworks like Exposed, Spark, or Multik.
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Integrate Kotlin DataFrame with unsupported sources — see practical examples with Exposed, Spark, and more.
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How to connect Kotlin DataFrame with data sources like Exposed, Apache Spark, or Multik.
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Some data sources are not officially supported in the Kotlin DataFrame API yet —
but you can still integrate them easily using custom code.

Below is a list of example integrations with other data frameworks.
These examples demonstrate how to bridge Kotlin DataFrame with external libraries or APIs.

- [Kotlin Exposed](https://github.com/Kotlin/dataframe/tree/master/examples/idea-examples/unsupported-data-sources/exposed)
- [Apache Spark (with/without Kotlin Spark API)](https://github.com/Kotlin/dataframe/tree/master/examples/idea-examples/unsupported-data-sources/spark)
- [Multik](https://github.com/Kotlin/dataframe/tree/master/examples/idea-examples/unsupported-data-sources/multik)

You can use these examples as templates to create your own integrations
with any data processing library that produces structured tabular data.