关于版权和开源许可证

如题，完全是两个不同的概念

A lot of your confusion will go away if you keep in mind that copyright and licensing are two completely separate things.
Copyright is owned by the original author. (Unless it was produced under a “work for hire” contract, in which case it is owned by the employer. This most likely doesn’t apply to your project.) Copyright can be sold or otherwise transferred.
Licensing is the copyright owner giving other people the permission to use their work in specific ways, under specific conditions. Distribution of a work under a license does not transfer copyright rights. (Unless the license specifies that it does, of course, but no open-source license I know of does this.)

如何发布自己的软件？
如何轻松地向开源社区贡献代码？
- Software-Release-Practice-HOWTO
- Software Engineering
- How to use GNU licenses for your ownsoftware
- Frequently Asked Questions about the GNU Licenses
- GPLv3：新版本的General Public License对于软件开发人员意味着什么

额外收获
IBM知识库
developerWorks 图书频道: 软件的黄金时代，第 1 章：计算机语言的“巴别塔”