HEATKEYS

Research Randomizer -- A Free Tool for Instant Random Sampling and Assignment.

Sealed Envelope is dedicated to providing a range of high quality internet randomisation (randomization) and telephone randomisation services for clinical trials. A basic free internet randomisation service is provided for public sector trials.

RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

GraphPad Prism is a powerful combination of biostatistics, curve fitting (nonlinear regression) and scientific graphing in one comprehensive program. Easily organize, analyze and graph repeated experiments; pick appropriate statistical tests and inte...

Math help since 1998. Math Goodies helps kids at all levels with interactive instruction and free resources. Get help online or offline.

Psychic Science - free educational-entertainment resources for psychical research, parapsychology and mind magic, including ESP tests and psychic games

Online Tools and resources for Webmasters and Web Developers. Easily change text and html, remove line Breaks, capitalize sentences, convert text to basic html and other common tasks.