LibreOffice - Math - Math, LibreOffice, math editor, ODF, OpenFormula, open standards
CKEditor - Real-time collaborative future-ready rich text editor
Math Magic - MathMagic Equation Editor for Desktop Publishing software & Word Processors, Adobe InDesign, QuarkXPress, MS Word, iWork, for Technical writing with very easy interface and fast input.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
KLatexFormula - KLatexFormula is an easy-to-use graphical application for generating images (that you can drag and...
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.