ThirdFour 4+

StatsNoisy provides statistical information to help understand just how "noisy" investment performance can be. Given assumptions about asset managers' skill, and the number of funds used, you can calculate the probability of at least one fund underperforming their benchmark.

HRZones provides heart rate zones for training based on your age and gender. This can also be used to easily and quickly find out what average heart rate is required by Discovery Vitality for their points.

OptionGreeks is a must for anyone wanting to understand options (derivative instruments) at a deep and fundamental level, including the sensitivity of the value of options to the underlying parameters (know as the greeks - delta, gamma, rho, theta, vega, and epsilon).

MLFotoFun will provide you and your friends with hours of fun passing photos through eight different machine learning models to see if the models accurately predict what they have trained to do (including the age, gender, emotion, and sentiment of faces; and food, flowers, cars, and places).