Hardware

ComScire (Quantum World Corp) - Device driver for random number generation using entropy sources within a PC using no additional hardware. On-line purchase, free download of trial version.
www.comscire.com/

Hardware Random Number Generators - Report on testing and applications by Robert Davies, October 2000.
www.robertnz.net/hwrng.htm

HotBits: Genuine Random Numbers - HotBits is a service which generates random data from the decay of radioactive material and sends it over the internet.
www.fourmilab.ch/hotbits/

Lavarand - A system by which a pseudorandom number generator is seeded by cryptographic hash of the digital output of a photograph of six Lava Lite lamps.
www.lavarnd.org/

Protego Information AB - Products include the SG100 hardware random number generator that connects to a PC serial port,driver software for Windows 95/Windows NT and example programs in source. Based in Lund, Sweden.
www.protego.se/products_en.htm

Random Number Generator - Orion Products. A parallel port dongle consisting of two independent analogue Zener diode based noise sources, with associated software. (Mac/DOS/Win)
www.randomnumbergenerator.nl

Random.org - True Random Number Service - True random number generator with CORBA and WWW interfaces. Numbers are generated with atmospheric noise. Source code for many clients (Java, Perl, and C++) online.
www.random.org/

Really Random Numbers - Random number generator software based on white noise from the sound card. Free download of evaluation version, on-line purchase. Windows32.
www.sunny-beach.net/random_numbers