Licensing — nirs4all-cluster

nirs4all-cluster is part of the nirs4all ecosystem and is offered under a dual open-source license plus an optional commercial license (open-core model).

1. Open-source license (default)

SPDX-License-Identifier: CeCILL-2.1 OR AGPL-3.0-or-later

You may use, modify, and redistribute this software under the terms of either, at your option:

  1. the CeCILL Free Software License Agreement, version 2.1 — full text in LICENSES/CeCILL-2.1.txt; or

  2. the GNU Affero General Public License, version 3.0 or (at your option) any later version — full text in LICENSES/AGPL-3.0-or-later.txt.

CeCILL-2.1 is the French (CIRAD) GPL/AGPL-compatible license; AGPL-3.0-or-later is its internationally recognized equivalent. The two are co-equal — choose whichever you prefer. The repository’s root LICENSE file ships the AGPL-3.0-or-later text so code hosts display a recognized SPDX license; this does not diminish the CeCILL-2.1 option.

Unless a separate commercial agreement is explicitly in place, your use of this code is governed by the open-source terms above.

2. Commercial license

If the copyleft obligations of CeCILL-2.1 / AGPL-3.0-or-later do not fit your use case — for example, embedding nirs4all-cluster in a proprietary, closed-source product or SaaS without publishing your own source code — a commercial license is available.

3. Third-party components

nirs4all-cluster relies on third-party open-source components. Their licenses are summarized in THIRD_PARTY_NOTICES.md, and the relevant license-family texts are bundled under LICENSES/.