This module integrates the excellent HTML5 "true WYSIWYG" editor Aloha Editor) with Drupal.
The world's most advanced browser HTML5 based WYSIWYG editor lets you experience a whole new way of editing. It's faster than existing technologies and offers unprecedented WYSIWYG functionalities.
ReText is a simple but powerful text editor for Markdown and reStructuredText.
MusE is a MIDI/Audio sequencer with recording and editing capabilities written by Werner Schweer. MusE aims to be a complete multitrack virtual studio for Linux
PiTiVi is an open source video editor, written in Python and based on GStreamer and GTK+.