> ## Documentation Index
> Fetch the complete documentation index at: https://docs.druks.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Licensing

> What the Functional Source License lets you do with Druks.

Druks uses the [Functional Source License, version 1.1, with an Apache 2.0
future license](https://github.com/czpython/druks/blob/main/LICENSE)
(FSL-1.1-ALv2). The license text is the contract. This page explains it.

## What you can do

* Run Druks for your own company, on your own infrastructure.
* Change the code.
* Write apps for Druks and license them on your own terms.
* Use Druks for non-commercial education and research.
* Install and operate Druks for a client, in the client's own infrastructure.

## What you cannot do

You cannot make Druks available to others in a commercial product or service
that competes with Druks. A hosted Druks service is an example.

## Software houses and agencies

You can install, operate, and extend Druks for one client in the client's own
infrastructure. The client is the licensee, and you supply professional
services to it.

If you host Druks for many clients as a paid service, that is a competing use.
For this case, contact us through [druks.ai](https://druks.ai) about a partner
agreement.

## When a release becomes Apache 2.0

Each release becomes available under the Apache License 2.0 two years after we
publish it. Druks code published before the change to the Functional Source
License, which includes v0.12.0 and earlier releases, stays under the MIT
License.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.