In Moodle 2.4 and later, the tinymce editor can be extended and replaced by new plugins.
The MediaCore Moodle plugin gives your Moodle users one-click access to the MediaCore Chooser — allowing them to easily upload and embed media to any Moodle page, straight from inside Moodle.
PoodLL Anywhere for TinyMCE allows the user to record audio and video or draw pictures, or snap pictures, directly into forum posts, assignment descriptions, page resource content, question descriptions, question responses and other areas.
In order for the Helix Media Library Assignment Activity to launch from the text editor you must install this TinyMCE Plugin
This plugin is a plugin for TinyMCE editor for insert any iLM (interactive Learning Modules) activities in any Moodle text.
An interface that integrates with Moodles existing HTML editor (HTMLArea in 1.9 and TinyMCE in 2.x) to support teachers in creating CLOZE (Embedded answers) questions in the GIFT syntax. It will also read and edit existing CLOZE items.