V2EX copyleft

Copyleft

定义 Definition

“Copyleft”(反版权/著作权反向许可)是一种授权理念:允许他人自由使用、复制、修改和传播作品,但通常要求衍生作品在发布时必须使用相同或兼容的开放许可(“传染性/继承性”条款),以确保自由持续存在。常见于自由软件与开放内容许可(如 GNU GPL)。

发音 Pronunciation (IPA)

/kpileft/(英)
/kpileft/(美)

例句 Examples

Copyleft lets anyone share and modify the software as long as they keep it under the same license.
Copyleft 允许任何人分享和修改该软件,只要他们继续在同一许可证下发布。

The project adopted a copyleft license to prevent companies from taking the code private and selling closed versions.
该项目采用了 copyleft 许可证,以防止公司将代码私有化并出售封闭版本。

词源 Etymology

“Copyleft”是对“copyright”(版权)的戏仿式造词,把“right(权利/右)”换成“left(左)”。它并非表示“没有版权”,而是利用版权法中的许可机制,把“必须开放共享”的条件写进授权条款中。该词与自由软件运动密切相关,常与 GNU 项目和 GPL 许可一起被提及。

相关词 Related Words

文学与著名作品 Notable Works

  • Free Software, Free Society: Selected Essays of Richard M. Stallman(理查德斯托曼文集,讨论 copyleft 与自由软件理念)
  • Open Sources: Voices from the Open Source Revolution(收录多位开源先驱文章,涉及 copyleft 与开源许可争论)
  • The Cathedral and the Bazaar(埃里克雷蒙,谈开源开发模式,常在相关语境中提及 copyleft/GPL)
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