Jim - An overview of Jim capabilities
RANDOM.ORG - RANDOM.ORG offers true random numbers to anyone on the Internet.
Insect - High precision scientific calculator with full support for physical units.
Random Number Generator - Randomly generate integers or floating point numbers within a given range and specified discrete or continuous statistical probability distribution.
errProof - The website has a lot of useful and unique tools.
Randommer - Generate random number, telephone numbers, text, hashed and social security numbers