LibreOffice - Math - Math, LibreOffice, math editor, ODF, OpenFormula, open standards
MathCrunch - Learn math stress free
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.
Kalam Labs - Twitch for Science
KLatexFormula - KLatexFormula is an easy-to-use graphical application for generating images (that you can drag and...
Fact Flow - Simple solution to help kids achieve math fluency