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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/
Random Bots
Generators for random number samples, random selection and random check number audits.
http://www.randombots.com/
Random.org
True random number generator with CORBA and WWW interfaces.
http://www.random.org/