Linux systems rely heavily on GNU software and in the past, GNU systems used the Linux kernel. This close connection has led some people to mistakenly equate GNU with Linux. They are actually quite separate. In fact, the FSF is developing a new kernel called HURD to replace the Linux kernel in GNU systems.

Learn more about Open Source in Webopedia's "Did You Know...?" section.

GNU Data Language (GNUDL) tutorial
Introduces GNUDL, a high-level language and environment designed to allow flexible and powerful manipulation and plotting of data.

Yahoo!'s GNU operating systems page
Yahoo!'s directory of GNU operating systems.

Yahoo!'s GNU software page
Yahoo!'s directory GNU software.

GNU GPL FAQ
Provided by the GNU Project.

Homepage of the Open Source Initiative
The latest OSI news, an index of licenses with definitions, open source links, translations of the Open Source Definition and the history of the OSI and its board of directors.

The GNU GPL
The full text of Version 2 of the GNU GPL.