LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
CKEditor - Real-time collaborative future-ready rich text editor
ONLYOFFICE - ONLYOFFICE is a complete office and productivity suite.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
Quill - Powerful, API-driven rich text editor