Windows is full of Open Source

Windows is full of Open Source, for example the TCP/IP stack (from *BSD), and yes according to the BSD license they and other companies are free to use this code.

How Open Source has influenced Windows Server 2008

When I think about what works really well in Open Source development and Technology, the following things stand out:

* Modular architectures
* Programming language agnostic
* Feedback-driven development
* Built-for-purpose systems
* Sysadmins who write code
* Standards-based communication

by Sam Ramji on February 27, 2008