Redmine CKEditor plugin
This plugin adds the text formatting for using CKEditor to Redmine.
What is CKEditor?
CKEditor is a WYSIWYG text editor. See the official site for more details.
Redmine 1.1.x (Might work with other versions, but I've not tested.)
Plugin installation and setup
Copy the plugin directory into the vendor/plugins directory (make sure the name is redmine_ckeditor)
Change text formatting (Administration > Settings > General > Text formatting) to CKEditor
Configure the plugin (Administration > Plugins > Configure)