---
title: "Open Source Software & Licenses | Mersive"
canonical: https://www.mersive.com/resources/opensource
description: "Open-source information for Polaris, website data credits, and the publication status of firmware notices, source materials, and the Mersive EULA."
language: en-US
publisher: Mersive Technologies
---

# Open source & licenses

Guidance on Polaris software licensing, open-source components, and the data used on this website.

Third-party notices

## Open-source components in Polaris

Polaris firmware includes open-source components. For questions about component lists, copyright notices, or license texts, [contact Mersive](https://www.mersive.com/contact) with your product and firmware version.

Release-specific notices are not available for download here.

Mersive EULA

## Mersive end user license agreement

[Read the Mersive end user license agreement](https://www.mersive.com/legal/eula), including the Data Processing Addendum. Your signed agreement and order form may set additional terms for your deployment.

Source information

## Source materials by firmware release

For questions about source materials, include your product and firmware version when you [contact Mersive](https://www.mersive.com/contact). This page does not provide source downloads.

This website

## Data behind the star chart

The star chart on our 404 page uses the HYG database v4.1, which combines Hipparcos, the Yale Bright Star catalog, and Gliese. The data is used under CC BY-SA 4.0.

[HYG database source →](https://github.com/astronexus/HYG-Database)

The constellation figures use the IAU-derived line set from d3-celestial, under the BSD 3-Clause license.

[d3-celestial source →](https://github.com/ofrohn/d3-celestial)