Kelty offers five key components of the free software world.

Kelty提供了自由软件世界的5个关键组成部分。

Discussing these components, Kelty explores some critical moments in the history of free software.

讨论了这些组成部分，Kelty介绍了自由软件历史上的一些重大时刻。

For examples of coordinated collaboration, Kelty points to the debate between organizational models for Apache and Linux.

举一个协调合作的例子，Kelty介绍了Apache和Linux系统在联合模式下的讨论。

Kelty points out that there's now an attempt to build open source biological systems, through projects like BiOS and the Registry of Standard biological Parts.

Kelty指出，现在正试图建立开源生物系统，通过这个项目来集合BIOS和经典的生物学理论。

A discussion of copyleft licenses focuses on the early history of the GPL, which Kelty identifies as an Ur-license that nearly every other free software license is descended from.

有关copyleft许可证的讨论主要是介绍GPL的早期历史，GPL是Kelty确认的Ur许可证，几乎所有其他自由软件许可证都源于它。