> For the complete documentation index, see [llms.txt](https://preen.gitbook.io/preen-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://preen.gitbook.io/preen-docs/readme.md).

# Preen

Preen is a local-first, federated analytics engine built on top of DuckDB. Think of Preen as an open-core version of Fivetran, Hightouch, or Stitch for local data processing. Preen enables accessing data across 10s, 100s or 1000s of data sources. The only thing you need is a laptop, basic SQL and access to your data sources.

{% embed url="<https://www.youtube.com/watch?v=O3IMRaSkEcQ>" %}

## Why Preen?

* Run analysis and train AI models directly from the primary copy of your company's data.
* Build data applications with their own local database, think SQLite for data applications.
* No datalakes. No cloud computing. No copies of data that create numerous conflicting versions of data.
* Get instant access to exactly the data you need without waiting on another team.
* Describe your Company's data universe in code. Build ephemeral, versioned, enterprise data warehouses from scratch directly on your laptop.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Quick Start</strong></td><td>Install and use Preen</td><td></td><td></td><td><a href="/pages/CyH2xJQs9yWJ1S8BYNav">/pages/CyH2xJQs9yWJ1S8BYNav</a></td></tr><tr><td><strong>Concepts</strong></td><td>Learn the basics of Preen</td><td></td><td></td><td><a href="/pages/0zGH5wcXoBrHN5SYFyf1">/pages/0zGH5wcXoBrHN5SYFyf1</a></td></tr><tr><td><strong>Github Repo</strong></td><td>Open an Issue or view source</td><td></td><td></td><td><a href="https://github.com/preendata/preen">https://github.com/preendata/preen</a></td></tr></tbody></table>