Super Sound - Super Sound is a resourceful audio and music editor.
CKEditor - Real-time collaborative future-ready rich text editor
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
Audio Video Editor and Mixer - Audio Video Editor and Mixer is a tool that helps you add changes to your video and audio files.
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.