Extension Licenses

For add-ons and themes the recommended license is GNU General Public License v2.0 or later. For assets, the required license is Public Domain (CC0).

The Blender Extensions Platform only supports free and open source extensions compatible with Blender’s license: GNU General Public License v3.0 or later.

This allows extensions to be packed with Blender and distributed in compliance with the governing principles of the Blender license.

More GPL and LGPL Licenses

Some third-party add-on libraries may require a different compatible license.

In those cases a few variant versions of GNU GPL are also accepted:

Identifier

License

SPDX:GPL-2.0-or-later

GNU General Public License v2.0 or later

SPDX:GPL-3.0-or-later

GNU General Public License v3.0 or later

SPDX:LGPL-2.1-or-later

GNU Lesser General Public License v2.1 or later

SPDX:LGPL-3.0-or-later

GNU Lesser General Public License v3.0 or later

More Compatible Licenses

In some exceptional cases other licenses may be required. Extensions are still accepted under these licenses:

Identifier

License

SPDX:BSD-1-Clause

BSD 1-Clause “Simplified” License

SPDX:BSD-2-Clause

BSD 2-Clause “Simplified” License

SPDX:BSD-3-Clause

BSD 3-Clause “New” or “Revised” License

SPDX:BSL-1.0

Boost Software License 1.0

SPDX:MIT

MIT License

SPDX:MIT-0

MIT No Attribution

SPDX:MPL-2.0

Mozilla Public License 2.0

SPDX:Pixar

Pixar License

SPDX:Zlib

Zlib License