With a click of the mouse, you can instantly install any script
without any programming knowledge.


Blogs
b2evolution HOT! Short description: A blog script featuring multiple blogs, categories/sub-categories, skins, search function, multiple languages, search engines friendly URLs.
Homepage: http://b2evolution.net/

Nucleus Short description: A powerful blog script featuring multiple blogs, multiple authors, drafts and future posts, bookmarklets.
Homepage: http://nucleuscms.org/
pMachine Free

WordPress Short description: WordPress is a blogging software with a focus on ease of use, elegance, performance, and standards with a huge selection of themes and plugins.
Homepage: http://wordpress.org/


Content Management
DrupalShort description: An advanced portal with collaborative book, search engines friendly URLs, online help, roles, full content search, site watching, threaded comments, version control, blogging, news aggregator.
Homepage: http://drupal.org/

Geeklog Short description: A portal system with a wide range of modules.
Homepage: http://www.geeklog.net/

Joomla HOT! Short description: Joomla! is one of the most powerful Open Source Content Management Systems on the planet. It is used all over the world for everything from simple websites to complex corporate applications. Joomla! is easy to install, simple to manage, and reliable.
Homepage: http://www.joomla.org/


Mambo Open Source Short description: A professional level yet easy to use Content Management System featuring inline WYSIWYG content editors, newsfeeds, syndicated news, banners, mailing users, links manager, statistics, content archiving, date based content, 20 languages, modules and components.
Homepage: http://www.mambo-foundation.org/


PHP-Nuke Short description: One of the most popular community-based portals with a big choice of modules and languages.
Homepage: http://www.phpnuke.org/

phpWCMS Short description: phpWCMS is perfect for professional, public and private users. It is very easy to learn and gives you the flexibility to separate layout and content. Lots of powerful but simple implemented features assists publishers and web developers too.
Homepage: http://www.phpwcms.de/

phpWebSite Short description: Very powerful Content Management System with document manager, announcements, menu manager, photo album, block maker, FAQ, web pages maker, polls, information categorizer, calendar, link manager, form generator.
Homepage: http://phpwebsite.appstate.edu/

Post-Nuke Short description: A Content Management System with focus on flexibility and security. A big variety of modules and blocks makes this CMS an allround tool.
Homepage: http://www.postnuke.com/

Siteframe Short description: A straightforward content-management system designed for rapid deployment of community-based websites. Nice-looking templates, oriented toward document-sharing, clean interface.
Homepage: http://siteframe.org/

TYPO3 Short description: TYPO3 is a free Open Source content management system for enterprise purposes on the web and in intranets. It offers full flexibility and extendability while featuring an accomplished set of ready-made interfaces, functions and modules.
Homepage: http://www.typo3.com/

Xoops Short description: A very popular advanced portal system.
Homepage: http://www.xoops.org/

See the rest over 52 Scripts