Linux distribution created for computers with x86-64 processors. The project attempts to have minimal distribution-specific changes, and therefore minimal breakage with updates, and be pragmatic over ideological design choices and focus on customizability rather than user-friendliness.
Vinet led Arch Linux until 1 October 2007, when he stepped down due to lack of time, transferring control of the project to Aaron Griffin.
Until Pacman version 4.0.0, Arch Linux's package manager lacked support for signed packages. Packages and metadata were not verified for authenticity by Pacman during the download-install process. Without package authentication checking, tampered-with or malicious repository mirrors could compromise the integrity of a system. Pacman 4 allowed verification of the package database and packages, but it was disabled by default. In November 2011, package signing became mandatory for new package builds, and as of the 21st of March 2012, every official package is signed.
The end of i686 support was announced in January 2017, with the February 2017 ISO being the last one including i686 and making the architecture unsupported in November 2017. Since then, the community derivative Arch Linux 32 can be used for i686 hardware.