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…
Edtr.io - Intuitive WYSIWYG web editor, open source & fully adaptable.
KLatexFormula - KLatexFormula is an easy-to-use graphical application for generating images (that you can drag and...
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
LibreOffice - Math - Math, LibreOffice, math editor, ODF, OpenFormula, open standards
MathCast - MathCast is an equation editor, an application that allows you to input mathematical equations.