AbiWord - AbiWord is a free software word processor.
CKEditor - Real-time collaborative future-ready rich text editor
LibreOffice - Writer - Open-source cross-platform word processor.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
Microsoft Word - Microsoft Word is a commercial word document processor for Windows.
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.