MathType - The Professional version of Equation Editor- MathType is a powerful interactive tool for Windows and Macintosh that lets you create mathematical notation for word processing, web pages, desktop publishing, presentations, and for TeX, LaTeX, and Math…
LibreOffice - Math - Math, LibreOffice, math editor, ODF, OpenFormula, open standards
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.
Paperspade - Type math easily through just English text!
KLatexFormula - KLatexFormula is an easy-to-use graphical application for generating images (that you can drag and...
Math-o-mir - The Mathematical Notepad.