The Linux kernel is maintained at the The Linux Kernel Archives. The kernel was written from scratch by Linus Torvalds and many contributors over the Internet. The current "stable" version of Linux is the 2.6 tree.

The Linux kernel and other software are often bundled into distributions. NesteaWiki uses these:

• Debian
• KNOPPIX Live CD
• Red Hat Enterprise Linux ES
• Slackware
• Centos