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.
- http://www.protego.se/products_en.htm

Hardware Random Number Generators
- Report on testing and applications by Robert Davies, October 2000.
- http://www.robertnz.net/hwrng.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)
- http://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.
- http://www.random.org/

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.
- http://www.lavarnd.org/

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

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.
- http://www.comscire.com/

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