Hi,
I see people asking seat licenses for paid addons or asking extra for commercial use. Some marketplaces do this intentionally to max their profits.
Please share this knowledge that you don’t need pay extra for seats or commercial uses.
What license should you use for Blender add-ons?
First of all don’t confuse with art license and software license. You can use any art license for your art work created with Blender.
But for Python add-ons, as soon as you import ‘bpy’ module in your script, your script becomes a derivative work of Blender. So, you have to use a license that is compatible with Blender’s GPL license.
What is GPL License?
It stands for General Public License. The work can be freely used, modified, and distributed. Distributed works must remain open-source and licensed under GPL. It translates to the fact that you can’t restrict the user from modifying and distributing your script.
Can you sell your Blender add-on?
Yes, you can sell your Blender add-ons. You can charge for a copy of the add-on that you deliver to the user. But you can’t restrict the user from modifying and distributing it.
Can you use blender add-ons commercially and pay seat license?
GPL license allows you to use the software for any purpose, including commercial use. Owner of the addon can’t restrict you from using it commercially, redistributing it, or re-selling it. Once you buy a copy of the addon, you can use it on as many computers as you want without paying any additional seat license fees or any other restrictions.
It may sound not fair for the developer, but it is the way GPL license works and it is the reason why Blender is released under GPL license.
Edit:
I understand people become emotional about this, but you can’t inject an intelletcual property and claim new license. Either remove ‘bpy’ from script or create separate license for other content. Im not the one invented GPL, I sell my addons as well.
Edit 2:
This post has been unfairly closed by the admin claiming promoting piracy. Since when open source and GPL considered as piracy? Please flag this admin if you find it unfair.
Edit 3:
Blender is meant to be open source and stay that way with addons; GPL protects and encourages that. So if you decide to commercialize your addon, it’s at your own risk. If we discuss trashy behavior, it’s when you attempt to commercialize addon and asking more for seats and commercial uses for your script by abusing open-source projects at the beginning.