Commercial licensing

heimdall's source code is licensed under AGPL-3.0-only (see LICENSE). The AGPL is a strong network-copyleft license: if you run a modified version of heimdall and let users interact with it over a network, the AGPL requires you to offer those users the corresponding source of your modified version.

That obligation does not fit every organization. The original heimdall code is owned jointly, in equal shares (50/50), by Vetra Automation AB and Ignalina ApS. As co-owners, Vetra Automation AB and Ignalina ApS can jointly offer the same code under separate commercial terms — for example, to organizations that want to embed or modify heimdall without the AGPL's source-availability obligations.

What this document is — and is not

• This is informational. It describes that a commercial option exists and how to start a conversation about it.
• It is not a license grant, an offer, or a contract. No commercial license exists until both co-owners — Vetra Automation AB and Ignalina ApS — and the licensee sign a written agreement.
• Simply contacting the co-owners, downloading heimdall, or using it does not grant you a commercial license or waive any AGPL obligation. Until a commercial agreement is executed, your use is governed solely by AGPL-3.0-only.
• Nothing here is legal advice. Obtain your own legal review of how the AGPL applies to your deployment.

Who might want a commercial license

You may want to get in touch if you intend to:

• distribute a modified heimdall, or offer it as a hosted/SaaS service, without meeting the AGPL §13 network source-availability requirement;
• embed heimdall (or substantial parts of it) into a proprietary product;
• obtain a warranty, indemnity, support, or SLA that the open-source license explicitly disclaims.

If you deploy an unmodified heimdall internally and are comfortable with the AGPL, you generally do not need a commercial license — the open-source license already covers that use.

How to get in touch

Write to gunnar@gunnar.rs. Please include:

• your organization and intended use (internal, hosted/SaaS, embedded/OEM);
• whether you intend to modify heimdall;
• the scope you are interested in (support, warranty, relicensing, or a combination).

Terms, pricing, and availability of any commercial license are determined jointly by Vetra Automation AB and Ignalina ApS and are set out in the written agreement, not in this file.