Copyright licences of this kind are referred to as ‘licences for free and open source software, free and open source hardware, or free cultural works’. Examples of such licences include those created or approved <a href="https://www.gnu.org/licenses/license-list.html">for free software projects by the Free Software Foundation</a>, <a href="https://opensource.org/licenses">for open source projects by the Open Source Initiative</a>, and <a href="https://creativecommons.org/public-domain/freeworks/">for free cultural works by Creative Commons</a>. Note, however, that the Creative Commons licences with Non-Commercial (NC) or No Derivatives (ND) restrictions are not licences for free cultural works and thus do not fulfil the licensing requirement.</p>