== Linux kernel development ==

 * LinuxMM:LinuxMM Linux memory management wiki
 * [[http://linux-mm.org/HugePages|Huge pages wiki]]
 * [[http://linuxfs.pbwiki.com/|Filesystems wiki]]
 * [[http://www.linuxfoundation.org/collaborate/workgroups|Linux Foundation Workgroups]]
 * [[http://kernel.org|kernel.org - Home of the Linux kernel]]
 * [[http://kernel.org/doc|kernel.org/doc Kernel Documentation]]
 * [[http://bugzilla.kernel.org|Bugzilla - Linux kernel bug management tool]]
 * [[http://crashcourse.ca/introduction-linux-kernel-programming-2nd-edition/introduction-linux-kernel-programming-2nd-edition|Linux Kernel Programming Course]]

== Linux distributions open for participation ==

 * [[http://centos.org/|CentOS]]
 * [[http://www.damnsmalllinux.org/|Damn Small Linux]]
 * [[http://www.debian.org/|Debian]]
 * [[http://fedoraproject.org/|Fedora Project]]
 * [[http://www.gNewSense.org/|gNewSense]] 
 * [[http://www.linuxfromscratch.org/|Linux From Scratch]] 
 * [[http://www.opensuse.org/en/|OpenSUSE]]
 * [[http://www.pendrivelinux.com/|Pen Drive Linux - Boot and run Linux from a USB flash drive]]
 * [[https://www.scientificlinux.org/|Scientific Linux]]
 * [[http://www.ubuntu.com/|Ubuntu]]

== General Linux ==

 * [[http://tldp.org/|The Linux Documentation Project]]
 * [[http://tldp.org/LDP/abs/html/index.html|Advanced Bash Scripting Guide]]
 * [[http://www.regular-expressions.info/reference.html|Regular Expressions Reference - Basic Syntax]]
 * [[http://www.grymoire.com/Unix/Sed.html|Sed - An Introduction and Tutorial]]
 * [[http://www.linuxlinks.com/|Linux Links]]
 * [[http://freecode.com/|FreeCode]]
 * [[http://www.linuxcookbook.com/|Linux Cookbook - tips and hints]]
 * [[http://www.freesoftwaremagazine.com/|Free Software Magazine]]
 * [[http://www.oualline.com/vim-cook.html|Vim Cookbook]]
 * [[http://thomer.com/vi/vi.html|Vi Lovers Home Page]]
 * [[http://vimdoc.sourceforge.net/htmldoc/version7.html|Vim Documentation]]

== Security related ==

 * [[http://www.linuxsecurity.com/|Linux Security]] detailed Linux security news site

== News sites ==

 * [[http://lkml.org|Linux-kernel mailing list (LKML)]]
 * [[http://marc.info/?l=linux-kernel|MARC view of LKML]]
 * [[http://www.lwn.net|Linux Weekly News]] - follow the kernel link (changes weekly) (the current kernel page is always http://lwn.net/current/kernel.php3).
 * [[http://www.kerneltrap.org/|Kerneltrap]] - news on various free OS kernels (Old, have contacted Jeremy)
 * [[http://web.archive.org/web/20071012002855/http://kerneltraffic.org/|Kernel Traffic (link to Internet Archive)]] - a digest of what was discussed on the Linux-kernel mailing list (original site has disappeared)
 * [[http://www.Linux-magazine.com/|Linux Magazine]]
 * [[http://www.linux.com/|Linux.com]]


== Other operating systems actively being developed ==

 * [[http://netbsd.org/about/|NetBSD]]
 * [[http://openbsd.org/|OpenBSD]]
 * [[http://www.dragonflybsd.org/|A Peek at the DragonFly Virtual Kernel]]
 * [[http://www.freebsd.org/|FreeBSD]]
 * [[http://www.minix3.org/|The MINIX 3 Operating System]]
 * [[http://hub.opensolaris.org/bin/view/Main/|OpenSolaris]]