CKEditor - Real-time collaborative future-ready rich text editor
Falcon - Ultraportable 2-in-1 Laptop
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
Editorial - Desktop-class text & markdown productivity on iOS
Quill - Powerful, API-driven rich text editor
NotePlan - Make plans inside an individual markdown note for every day in your calendar. Use it as a journal for your daily tasks and plan todos in advance. For Mac, iPhone and iPad.