The following distributions are completely free: aLinux, Alpine Linux, ALT Linux, Annvix, Arch Linux, Ark Linux, Arudius, Asianux, Aurox, BLAG Linux and GNU, CentOS, Cross Linux from Scratch, CRUX, Damn Small Linux, Debian, DeLi Linux, DeMuDi, Devil-Linux, dyne:bolic, EnGarde Secure Linux, Fedora, Finnix, Foresight Linux, Fox Linux, Freespire, Frugalware, Gentoo, gNewSense, Gnoppix, gnuLinEx, GoboLinux, Impi Linux, Kanotix, Knoppix, Kurumin Linux, Linux Mint, Lunar Linux, Musix GNU+Linux, Myah OS, NimbleX, NUbuntu, openSUSE, Paipix, Pardus, Parsix, PCLinuxOS, PLD Linux Distribution, Puppy Linux, QiLinux, SabayonLinux, Satux, Scientific Linux, sidux, Slackware, SLAX, Source Mage GNU/Linux, Symphony OS, Trustix, Ubuntu, Ututo GNU/Linux, Vector Linux, Yoper and Zenwalk.
The following distributions are not free : Elive, Linspire, OES Linux, Pie Box Enterprise Linux, Red Hat Enterprise Linux, Rxart.