MediaWiki is powers Wikipedia.org. MediaWiki is designed to be run on a large server farm for a website that gets millions of hits per day. MediaWiki is an extremely powerful, scalable software and a feature-rich wiki implementation. Pages use MediaWiki's wikitext format, so that users without knowledge of XHTML or CSS can edit them easily. When a user submits an edit to a page, MediaWiki writes it to the database, but without deleting the previous versions of the page, thus allowing easy reverts in case of vandalism or spamming. MediaWiki can manage image and multimedia files, too, which are stored in the filesystem. For large wikis with lots of users, MediaWiki supports caching and can be easily coupled with Squid proxy server software.

MediaWiki is powers Wikipedia.org. MediaWiki is designed to be run on a large server farm for a website that gets millions of hits per day. MediaWiki is an extremely powerful, scalable software and a feature-rich wiki implementation. Pages use MediaWiki's wikitext format, so that users without knowledge of XHTML or CSS can edit them easily.

MediaWiki - powers Wikipedia

ocPortal CMS have all the features you would expect from a website engine: for instance photo galleries, news, file downloads and community forums/chats, but it does so whilst meeting the highest accessibility and professional standards. It is also smart enough to go beyond page management, to automatically handle search engine optimisation, and provide aggressive hack attack prevention. Demo Site: <A HREF="http://ocportal.com/site/demo.htm" target="_blank">http://ocportal.com/site/demo.htm</A> Its features include:
 <UL>
	<LI>Quick installer with Wizard-based installation</LI>
	<LI>Banner support, accepts Image, Flash, Text</LI>
	<LI>Search engine support with Full text search</LI>
	<LI>Newsletters and mass-mailing</LI>
	<LI>Support ticket system</LI>
	<LI>eCommerce and subscriptions</LI>
	<LI>Support for Multiple payment gateways</LI>
	<LI>Showcase popular content</LI>
	<LI>Image of the day</LI>
	<LI>News and blogging</LI>
	<LI>Event Calendar</LI>
	<LI>Structured wikis</LI>
	<LI>Built in Survey </LI>
	<LI>WYSIWYG editor</LI>
	<LI>Polls</LI>
	<LI>Points system for members</LI>
	<LI>Chatrooms and instant messaging </LI>
	<LI>User and Group access control</LI>
	<LI>Administration: Backup, Analytics, Audit trails etc </LI>
	<LI>Theme support</LI>
	<LI>Search engine optimisation</LI>
	<LI>CAPTCHA, to stop spammers</LI>
	<LI>Localisation support </LI>
	<LI>Forum support. Integrate popular forums</LI>
 </UL>

ocPortal CMS have all the features you would expect from a website engine: for instance photo galleries, news, file downloads and community forums/chats, but it does so whilst meeting the highest accessibility and professional standards. It is also smart enough to go beyond page management, to automatically handle search engine optimisation, and provide aggressive hack attack prevention.

ocPortal - Advanced CMS with many features

PmWiki is a wiki-based system for collaborative creation and maintenance of websites. It stores data in the file system and it doesn't require database. It has all required features for a wiki such as Page editing, Page history, Web feed, Email notification for revised page, Navigation trails, Search support, Spam protection and lot more.

PmWiki - PHP based Wiki

Yii is a high-performance purely object-oriented PHP framework best for developing Web 2.0 applications. Yii comes with rich features like MVC, DAO/ActiveRecord, Form input and validation, AJAX-enabled widgets, I18N/L10N, Caching, Authentication and Role-based access control, Scaffolding, Testing, Web services, Data caching, Page caching,  etc.

Yii Framework - Fast, Secure and Professional PHP Framework

StatusNet is a microblogging platform. It helps people in a community, company, or group to exchange short (140 character) messages over the Web. Users can choose which people to “follow” and receive only their friends' or colleagues' status messages. It provides a similar service to sites like Twitter or Yammer.

Statusnet - Microblogging platform powers Identi.ca

A powerful open source social networking platform. It provides the components you need to build a fully-featured social environment, including 
 <UL>
	<LI>Profiles</LI>
	<LI>Social bookmarking</LI>
	<LI>Groups</LI>
	<LI>Activity Streams</LI>
	<LI>Access controls</LI>
	<LI>Blogging / Microblogging</LI>
	<LI>Web Services API</LI>
	<LI>Pages</LI>
	<LI>RSS / JSON</LI>
	<LI>Widgets</LI>
	<LI>Video</LI>
	<LI>Documents</LI>
	<LI>Photo Gallery</LI>
 </UL>

A powerful open source social networking platform. It provides the components you need to build a fully-featured social environment, including Profiles, Groups, Activity Streams, Access controls, Blogging / Microblogging, Web Services API etc.

Elgg

DokuWiki is a standards compliant, simple to use Wiki, mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups and small companies. It has a simple but powerful syntax which makes sure the datafiles remain readable outside the Wiki and eases the creation of structured texts. All data is stored in plain text files – no database is required. Its features include:
 <UL>
	<LI>Simple syntax </LI>
	<LI>Unlimited page revisions</LI>
	<LI>Recent changes and Colored side by side diff support </LI>
	<LI>Uploading and embedding of images and other media </LI>
	<LI>Customizable Interwiki links</LI>
	<LI>Section Editing allows editing of small parts of a page</LI>
	<LI>Easy navigation through breadcrumbs</LI>
	<LI>Automatic table of contents generation</LI>
	<LI>Access Control and Anti-Spam support</LI>
	<LI>Internationalization support</LI>
	<LI>Index-based fast fulltext search</LI>
	<LI>Pagecaching for quicker rendering</LI>
	<LI>Layout customizable through templates</LI>
	<LI>Plugin support</LI>
	<LI>RSS support</LI>
 </UL>

DokuWiki is a standards compliant, simple to use Wiki, mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups and small companies. It has a simple but powerful syntax which makes sure the datafiles remain readable outside the Wiki and eases the creation of structured texts. All data is stored in plain text files – no database is required.

Dokuwiki - simple to use Wiki

XOOPS is an acronym of eXtensible Object Oriented Portal System. XOOPS is a web application platform written in PHP for the MySQL database. Its object orientation makes it an ideal tool for developing small or large community websites, intra company and corporate portals, weblogs and much more. XOOPS received many awards and concidered to be one among the best CMS. Its features include:
 <UL>
	<LI>Database-driven: XOOPS uses relational databases (currently MySQL) to store data required for running a web-based content management system</LI>
	<LI>Fully Modularized: Modules can be installed/uninstalled/activated/deactivated with a click using the XOOPS module administration system. There are hundreds of modules available for download</LI>
	<LI>Personalization: Registered users can edit their profiles, select site themes, upload custom avatars, and much more</LI>
	<LI>User Management: The ability to search for users by various criteria, send email and private messages to users through a template-based messaging system</LI>
	<LI>Supported World-wide: The XOOPS community has more than dozen official support sites around the world for support of non-English speaking users</LI>
	<LI>Multi-byte Language Support: Fully supports multi-byte languages, including Japanese, Simplified and Traditional Chinese, Korean, etc</LI>
	<LI>Versatile Group Permissions System: Powerful and user-friendly permissions system which enables administrators to set permissions by group</LI>
	<LI>Theme-based skinnable interface: XOOPS is driven by a powerful theme system. Both administrators and users can change the look of the entire web site with just a click of a mouse. There are also over 800 themes available for download</LI>
	<LI>SEO friendly</LI>
	<LI>Email notification system allowing members to be updated instantly of any content changes</LI>
 </UL>

XOOPS is an acronym of eXtensible Object Oriented Portal System. XOOPS is a web application platform written in PHP for the MySQL database. Its object orientation makes it an ideal tool for developing small or large community websites, intra company and corporate portals, weblogs and much more.

Xoops - Web content management system in PHP

Symphony is a web-based content management system (CMS) that enables users to create and manage websites and web applications of all shapes and sizes—from the simplest of blogs to bustling news sites and feature-packed social networks. 

 A project's content types are defined using sections and fields. Its pages provide dynamic front-end interfaces for viewing and interacting with that content. Data sources fetch and organize the content and deliver it to pages as XML, where page templates and utilities are applied to transform it into a desired format (HTML, for example). Advanced interactions, like data submission, can be enabled using events. 

 You will need to design your own data models, thinking carefully about the structure of your content and how different types relate to one another. You will have to draw up an architecture and URL schema for your front end. And you'll need to map out how you want your content to flow through the system. <img src="/AppImages/Article/symphony-screen1.png" alt="" class="float-center">

Symphony is a web-based content management system (CMS) that enables users to create and manage websites and web applications of all shapes and sizes—from the simplest of blogs to bustling news sites and feature-packed social networks.

Symphony CMS - XSLT powered CMS

BuddyPress provides social networking features to a WordPress. It works well to enable people with similar interests to connect and communicate. It supports Content tagging, Grouping of similar activity stream items, AJAX live updating of site wide activity stream, Message archive, Better XProfile management and lot more. 

Buddypress - Social Networking features in WordPress

Enano has everything you expect from today's content management framework. It implements the concept of a wiki into the concept of a traditional CMS. It has well-organized administration interface. Most other Enano functionality uses AJAX. Editing, renaming, restoring, and deleting pages are all possible using the on-page AJAX controls. It has fine grained user control, Search engine support, Wiki features support, plug-in support and lot more.

Enano cms - Edit like a wiki, present like a CMS

jCore is a Multi Site web Content Management System build especially for webmasters (using the well known LAMP environment) who have to maintain multiple websites for their clients and they would like to keep the source codes up to date and easily fix bugs for all clients at once. Its feature include Dynamic Web 2.0 Layout, Forms, Multiple Menus, Members Management, RSS Feeds, jQuery support and lot more.

jcore - Webmaster Multisite CMS

ImpressCMS is a community developed Content Management System, developed in PHP and MySQL. With this tool, maintaining the content of a website becomes as easy as writing a document!
 
It is Database-driven, Fully modularized, User Management, Multi-byte Language Support, Theme-based skinnable interface and lot more.

ImpressCMS is a community developed Content Management System, developed in PHP and MySQL. With this tool, maintaining the content of a website becomes as easy as writing a document!

ImpressCMS - Content Management System

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