知识共享 (Creative Commons: CC）
Creative Commons，简称CC，中国大陆正式名称为知识共享，台湾正式名称为创用CC。是一个非营利组织，也是一种创作的授权方式。此组织的主要宗旨是增加创意作品的流通可及性，作为其他人据以创作及共享的基础，并寻找适当的法律以确保上述理念。
CC授权许可协议包括：
署名(CC BY)
This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.
这个许可证允许别人在您的工作基础上进行分发，汇编、调整，甚至是商业上的应用，只要他们认可你的原创。
https://creativecommons.org/licenses/by/4.0/legalcode
署名-相同方式共享 (CC BY-SA)
This license lets others remix, tweak, and build upon your work even for commercial purposes, as long as they credit you and license their new creations under the identical terms. This license is often compared to “copyleft” free and open source software licenses. All new works based on yours will carry the same license, so any derivatives will also allow commercial use. This is the license used by Wikipedia, and is recommended for materials that would benefit from incorporating content from Wikipedia and similarly licensed projects.
这个许可允许别人在你的工作基础上（甚至商业目的）进行汇编、调整，只要他们为您署名，并把他自己的成果按相同许可协议进行分享。本许可协议常被当作“copyleft”免费和开源软件许可证。所有基于你原内容的新作品将携带相同的许可证，所以任何衍生工具也将允许商业用途。这是维基百科使用的许可证，并被推荐。
https://creativecommons.org/licenses/by-sa/4.0/legalcode
署名-禁止演绎 (CC BY-ND)
This license allows for redistribution, commercial and non-commercial, as long as it is passed along unchanged and in whole, with credit to you. 本许可协议允许重新分发，商业和非商业的，只要保证在分发过程中作为一个整体，保持不变，并为您署名。
https://creativecommons.org/licenses/by-nd/4.0/legalcode
署名-非商业性使用(CC BY-NC)
This license lets others remix, tweak, and build upon your work non-commercially, and although their new works must also acknowledge you and be non-commercial, they don’t have to license their derivative works on the same terms.
本许可协议允许别人出于非商业目的进行汇编、调整。他们在他自己的工作中，必须对你表示感谢。不要求他们自己的作品也遵循同样的授权许可。
https://creativecommons.org/licenses/by-nc/4.0/legalcode
署名-非商业性使用-相同方式共享 (CC BY-NC-SA)
This license lets others remix, tweak, and build upon your work non-commercially, as long as they credit you and license their new creations under the identical terms.
本协议允许别人出于非商业目的而对您作品进行汇编、调整，只要他们为您署名，并要求他们的作品也按相同方式进行授权。
https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
署名-非商业性使用-禁止演绎 (CC BY-NC-ND)
本许可协议是六个主要许可协议中限制最严格的，只允许他人下载你的作品，在为你署名的情况下与别人共享你的作品，但不能以任何方式改变作品，或出于商业目的使用作品。
https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
