Composr

Composr is a free and open source content management system (CMS) written in PHP and based on a MySQL backend database. The software has been developed by Chris Graham of ocProducts since 2004 and was known as ocPortal until the relaunch and re-branding in early 2016, with notable contributions from programmers Chris Warburton, Paul Duffy and Philip Withnall, and designers Allen Ellis and Robert Goacher during that time.
Upgrading
Upgrading from ocPortal v8/v9 to Composr v10 is supported. Current ocPortal users should also check the Migration roadmap for more information.
Features
Composr has a number of features which can be included when installing the software or added later. Some of those features include:
* Self extracting installer option
* Automatic Site map
* Support for short URLs
* Highly Web standards compliant, see more information below
* Theme Wizard
* Rich Media Support
* Social Media Syndication
* RSS & Atom Support
* Media Galleries including optional watermarking
* News & Newsletters
* Forums
* Custom Profile Fields
* Shopping Cart & e-commerce functionality
* Customisable Pages
* Web Banners
* Site statistics and analytics support
* Downloads
* Calendar
* Content revisions system
* Quizzes and Surveys
* Points store
* Periodic content reviews
* Search functionality
* Support ticket system
* External software integration support
* Robust security
* Polls - Simple voting system by users
* Catalogues for Links & FAQs etc.
* Community Wiki+
* Blogs
* Chat Rooms, Instant Messaging & Shoutboxes
* Multi-site network support including shared membership
* Multiple Usergroup support and Clubs feature
* Control of user privileges
* Powerful Command line interface
* Unique Realtime "Rain" visual usage tracker
* Tapatalk support via addon
Standards compliance
Composr complies with a number of standards covering areas such as web publishing, accessibility and internationalization, metadata and data storage and distribution.
Web publishing
HTTP 1.1, XHTML 1.0, CSS 3, HTML5 rel semantics, OpenSearch 1.0, DOM, SVG and ECMAScript
Accessibility and internationalisation
WCAG 1.0 and 2.0, with support for AAA protocol, Unicode, ATAG, Composr ATAG Compliance, Internationalisation, WAI-ARIA, UK Government recommendation for access keys and Section 508.
Data and feeds
XML, RSS 2.0 (all formats/variants), Atom 1.0, iCalendar 2.0, LDAP 3, OPML, WebDAV
Metadata
Dublin Core, hCalendar, hCard, hReview, oEmbed, OpenGraph, rel-nofollow, rel-enclosure, rel-license, rel-tag and XFN (limited support).

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