MalMath - MalMath is a great deal more than a mini-computer.
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…
WolframAlpha - WolframAlpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.
KLatexFormula - KLatexFormula is an easy-to-use graphical application for generating images (that you can drag and...
TexMaths - TexMaths is an addon designed to provide LaTeX support into LibreOffice.
LibreOffice - Math - Math, LibreOffice, math editor, ODF, OpenFormula, open standards