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

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