Fantastico is the leading auto installer for many common web applications for example:-
The following applications install with approx 3 mouse clicks and a few text entries (for example choosing a username and password :-) it just does not get any easier!) Blogs: b2evolution (1.9.3) Nucleus (3.24) pMachine Free (2.3) WordPress (2.1.3) Portals/CMS: Drupal (5.1) Geeklog (1.4.1) Joomla! (1.0.12) Mambo Open Source (4.6.2) PHP-Nuke (7.9) phpWCMS (1.1-RC4 Rev. A) phpWebSite (0.10.2) Post-Nuke (0.764) Siteframe (3.2.2) Typo3 (4.0.4) Xoops (2.0.16) Customer Support: Crafty Syntax Live Help (2.13.1) Help Center Live (2.1.2) osTicket (1.3.1) PerlDesk (3.09 [Patched-1]) (Commercial, needs license) PHP Support Tickets (1.9) Support Logic Helpdesk (1.2) Support Services Manager (1.0b) Discussion Boards: phpBB2 (2.0.22) SMF (1.1.2) E-Commerce: CubeCart (3.0.15) OS Commerce (2.2 MS2 (060817)) Zen Cart (1.3.7)