---
title: "License"
description: "Harblet is source-available under the Business Source License 1.1, free in production on one server."
canonical_url: "https://harblet.com/docs/reference/license"
---
# License

> Harblet is source-available under the Business Source License 1.1, free in production on one server.

Harblet is licensed under the [Business Source License 1.1](https://github.com/harblet/harblet/blob/main/LICENSE). It is source-available, not open source.

<warning>

This page is a summary. The [LICENSE](https://github.com/harblet/harblet/blob/main/LICENSE) file is what counts.

</warning>

## What's free

Production use is free as long as both of these hold:

- All production installs of Harblet operated by or for your organization **together manage no more than one server**.
- You **don't offer Harblet to others** as a hosted or managed service.

Non-production use, such as testing and development, is free on any number of servers. You may also copy, modify and redistribute the code.

## What counts as a server

A server is any physical or virtual machine that Harblet manages or deploys workloads to, **including the machine Harblet runs on**. An install with a [second server](https://harblet.com/docs/administration/servers) therefore manages two servers.

## What counts as offering Harblet to others

Offering Harblet to others means making it available to third parties so that they can deploy or manage **their own** applications with it.

- Hosting your own applications with Harblet is not offering it to others, no matter who uses those applications.
- Contractors and service providers who work on your behalf are not third parties.
- Your organization includes all of your affiliates under common control.

## More servers

For more than one server, write to [mail@harblet.com](mailto:mail@harblet.com) about a commercial license.

## Apache License 2.0 after four years

Each version of Harblet becomes available under the Apache License 2.0 four years after its first public release.


## Sitemap

See the full [sitemap](https://harblet.com/sitemap.md) for all pages.