Percentage Calculator - The percentage calculator to make your life easier
My Charity Change - Round-up daily transactions & donate to charities
Financial Toolbelt - Powerful calculators that help you improve your finances
4thWall - A free Google Chrome extension that raises money for charities while you stream shows and movies right on your favorite websites.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Hedado - Donate like a boss with Hedado!