NumWorks - The graphing calculator that makes learning math easier.
SnapXam - Your personal math tutor
Rule of 3 Calculator - Apply the mathematical Rule of Three in an easier, faster and more practical way!
Pratilipi - Amazon's Kindle Direct Publishing for Indian Languages
eMathHelp.net - Site is created to help people learn math. Includes algebra, calculus, differential equation calculators and notes with many examples.
Math42 - Formula calculator for IOS