Blender is licensed under GPL 2-or-later https://www.blender.org/about/license/ https://www.blender.org/about/license/ https://download.blender.org/release/GP

Blender is licensed under GPL 2-or-later https://www.blender.org/about/license/ https://www.blender.org/about/license/ https://download.blender.org/release/GPL-license.txt https://download.blender.org/release/GPL-license.txt According to that license: 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. [...] 3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.) If the GPL license notices are not kept intact, if a copy of the GPL is not provided with the software, and if the source code - or an offer of the source code - is not provided with the software, then they are not currently compliant with the terms of the GPL.