CKEditor - Real-time collaborative future-ready rich text editor
Audio Video Editor and Mixer - Audio Video Editor and Mixer is a tool that helps you add changes to your video and audio files.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
MixPad - MixPad is free music Music Mixer and Recording software designed for easy audio production.
Quill - Powerful, API-driven rich text editor
Add Audio to Video - Add Audio to Video empowers you to add custom audio tracks to your video files.