Financial Calculators
Future Value
Present Value
Payment
Number Of Payments
Interest Rate

Option Valuation Calculators
Black-Scholes
Implied Volatility

Health Calculators
Body Mass Index (BMI)

Probability and Statistics Calculators
Area Under The Normal Curve
Combinations/Permutations

Numerical Calculus Calculators
Trapezoidal Integration
Simpson Integration
Differentiation

Regression
Simple Regression

Model Rocketry
Flight Simulator

Conversion Calculators
Length
Area
Volume
Velocity
Weight/Mass
Temperature

Geometric Calculators
Circle
Sphere
Triangle

General Math Calculators
Function Evaluation
Summation
Product
Factorial
Quadratic

Astronomical
Moon Phase
Sun/Moon Rise/Set
Solar Azimuth/Altitude (Solar Energy)

Just For Fun
Lotto Picker

All spot price charts provided by www.kitco.com.
Kitco Gold

Kitco Silver
Kitco Platinum Kitco Palladium
Dollar index chart provided by www.ino.com.
US DOLLAR INDEX (NYBOT:DX)
PricedInGold.com provides information on the value of various items when measured against the relative stability of gold.
SP500 vs Gold
All SGS alternate charts provided by www.shadowstats.com.
SGS Unemployment

SGS Consumer Inflation

Cool Text: Logo and Graphics Generator Speakeasy Speed Test