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.
Hardware Random Number Generators: Report on testing and applications by Robert Davies, October 2000.
HotBits: Genuine Random Numbers: HotBits is a service which generates random data from the decay of radioactive material and sends it over the internet.
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.
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.
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)
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.
Really Random Numbers: Random number generator software based on white noise from the sound card. Free download of evaluation version, on-line purchase. Windows32.