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Welcome to Radiant

Radiant is a no-fluff, open source content management system designed for small teams. It is similar to Textpattern or MovableType, but is a general purpose content management system (not just a blogging engine).

Build Status

Radiant features:

  • An elegant user interface
  • The ability to arrange pages in a hierarchy
  • Flexible templating with layouts, snippets, page parts, and a custom tagging language (Radius:
  • Add a simple user management/permissions system, or bring your own
  • Support for multiple filtering syntax languages including Markdown and Textile as well as traditional HTML (it's easy to create other filters)
  • An advanced extension system
  • Preview content before going live
  • A flexible caching system (which by default expires pages every 5 minutes)
  • Built using Ruby on Rails
  • And much more...


Radiant is released under the MIT license and is copyright (c) 2006-2009 John W. Long and Sean Cribbs. A copy of the MIT license can be found in the LICENSE file.

Installation and Setup

Radiant is a traditional Ruby on Rails application, meaning that you can configure and run it the way you would a normal Rails application.

See the INSTALL file for more details.

Installation of a Prerelease

As Radiant nears newer releases, you can experiment with any prerelease version.

Install the prerelease gem with the following command:

$ gem install radiant --prerelease

Development Requirements

To run tests you will need to uncomment the "gemspec" line in the Gemfile and run "bundle install". Then run "bundle install rake spec".


The best place to get support is on the mailing list:

Most of the development for Radiant happens on Github:

The project wiki is here:


-- The Radiant Dev Team